NMZ / Nuveen Municipal High Income Opportunity Fund - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Nuveen Municipal High Income Opportunity Fund
US ˙ NYSE ˙ US6706821039

Mga Batayang Estadistika
LEI BN7VUB6JBYC7TTWZRZ58
CIK 1266585
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Nuveen Municipal High Income Opportunity Fund
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
June 30, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   ) Filed by the Registrant ☒       Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement. ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)

May 9, 2025 424B3

Nuveen Municipal High Income Opportunity Fund (NYSE: NMZ) (the “Fund”) Supplement Dated May 9, 2025 to the Fund’s Currently Effective Prospectus

424B3 1 nmz-424b3050925.htm PROSPECTUS Filed Pursuant to Rule 424(b)(3) Registration No. 333-277778 Nuveen Municipal High Income Opportunity Fund (NYSE: NMZ) (the “Fund”) Supplement Dated May 9, 2025 to the Fund’s Currently Effective Prospectus Effective May 9, 2025, Steven Hlavin has been added to the portfolio management team of the Fund. The following information is hereby added under the headi

December 13, 2024 SC 13D/A

NMZ / Nuveen Municipal High Income Opportunity Fund / BANK OF AMERICA CORP /DE/ - SC 13D/A Activist Investment

SC 13D/A 1 ef20037757sc13da.htm SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 7) NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES (Title of Class of Securities) 670682889 670682111 (CUSIP Number) Bank of America Corporation Bank of

December 13, 2024 EX-99.1

Exhibit 99.1 JOINT FILING AGREEMENT

EX-99.1 2 ef20037757ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 JOINT FILING AGREEMENT Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange Act or an

October 31, 2024 424B3

Nuveen Municipal High Income Opportunity Fund (NYSE: NMZ) (the “Fund”) Supplement Dated October 31, 2024 To The Fund’s Currently Effective Prospectus

Nuveen Municipal High Income Opportunity Fund (NYSE: NMZ) (the “Fund”) Supplement Dated October 31, 2024 To The Fund’s Currently Effective Prospectus Effective October 31, 2024, the information appearing under the heading “Risk Factors” of the Prospectus is hereby supplemented with the below.

June 27, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   ) Filed by the Registrant ☒       Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement. ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)

May 20, 2024 424B3

Nuveen Municipal High Income Opportunity Fund (NYSE: NMZ) (the “Fund”) Supplement Dated May 20, 2024 to the Fund’s Currently Effective Prospectus

Nuveen Municipal High Income Opportunity Fund (NYSE: NMZ) (the “Fund”) Supplement Dated May 20, 2024 to the Fund’s Currently Effective Prospectus Effective May 1, 2024, the information appearing under the heading “Management of the Fund – Investment Management and Sub-Advisory Agreements – Complex-Level Fee” of the Prospectus is hereby deleted and replaced with the following: Complex-Level Fee.

April 4, 2024 EX-FILING FEES

Calculation of Filing Fee Tables (Form Type) Nuveen Municipal High Income Opportunity Fund (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculatio

Calculation of Filing Fee Tables 424(b)(2) (Form Type) Nuveen Municipal High Income Opportunity Fund (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Common Shares $0.

April 4, 2024 424B2

20,766,793 COMMON SHARES $0.01 PAR VALUE PER SHARE Nuveen Municipal High Income Opportunity Fund

Filed Pursuant to Rule 424(b)(2) Registration Statement No. 333-277778 PROSPECTUS SUPPLEMENT (To Prospectus dated March 8, 2024) 20,766,793 COMMON SHARES $0.01 PAR VALUE PER SHARE Nuveen Municipal High Income Opportunity Fund Nuveen Municipal High Income Opportunity Fund (the “Fund”), a diversified, closed-end management investment company, is offering up to 20,766,793 of its common shares, $0.01

April 1, 2024 CORRESP

Appendix A  CIK File #   Registrant Name FYE Reviewed 1  0001137887 811-10345 Nuveen Municipal Credit Income Fund 10/31/2023 2  0001083839 811-09297 Nuveen Quality Municipal Income Fund 10/31/2023 3  0001450445 811-22253 Nuveen AMT-Free Municipal Val

  Thomas S. Harman Partner +1.202.373.6725 [email protected] April 1, 2024 VIA EDGAR Mr. John Kernan, Esq. Division of Investment Management, Disclosure Review & Accounting Office U.S. Securities and Exchange Commission 100 F Street, NE Washington, DC 20549 Re:  Nuveen Closed-End Funds – Sarbanes Oxley Review Dear Mr. Kernan: This letter addresses the comments you provided in a telepho

March 8, 2024 EX-FILING FEES

Calculation of Filing Fee Tables Form N-2 (Form Type) Nuveen Municipal High Income Opportunity Fund (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee C

Calculation of Filing Fee Tables Form N-2 (Form Type) Nuveen Municipal High Income Opportunity Fund (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities (1)(2) Fees to Be Paid Equity Common Shares $0.

March 8, 2024 EX-99.T1

NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY

NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENT, that the undersigned, in her capacity as a director/trustee of the above-referenced organizations listed on Appendix A hereto (the “Funds”), hereby constitutes and appoints MARK CZARNIECKI, DIANA R.

March 8, 2024 EX-99.L1

March 8, 2024

Stradley Ronon Stevens & Young, LLP Suite 2600 2005 Market Street Philadelphia, PA 19103-7018 Telephone 215.

March 8, 2024 EX-99.B

BY-LAWS NUVEEN CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS (Amended and Restated as of February 28, 2024) ARTICLE I DECLARATION OF TRUST AND OFFICES

BY-LAWS OF NUVEEN CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS (Amended and Restated as of February 28, 2024) ARTICLE I DECLARATION OF TRUST AND OFFICES Section 1.

March 8, 2024 EX-99.L2

March 8, 2024

March 8, 2024 Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive Chicago, Illinois 60606 RE:  Nuveen Municipal High Income Opportunity Fund Ladies and Gentlemen: We have acted as special Massachusetts counsel to Nuveen Municipal High Income Opportunity Fund, a Massachusetts business trust (the “Fund”), in connection with the Fund’s registration statement on Form N-2 to be filed with the Securities and Exchange Commission (the “Commission”) on or about March 8, 2024 (the “Registration Statement”), with respect to an unspecified number of the Fund’s (i) common shares of beneficial interest, $.

March 8, 2024 N-2ASR

As filed with the U.S. Securities and Exchange Commission on March 8, 2024

As filed with the U.S. Securities and Exchange Commission on March 8, 2024 Securities Act Registration No. 333 -     Investment Company Registration No. 811-21449 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-2 ☒ Registration Statement under the Securities Act of 1933: ☐ Pre-Effective Amendment No. ☐ Post-Effective Amendment No. and ☒ Registration Statement under t

March 8, 2024 EX-99.N

Consent of Independent Registered Public Accounting Firm

Consent of Independent Registered Public Accounting Firm We consent to the use of our report dated December 28, 2023, with respect to the financial statements and financial highlights of the Nuveen Municipal High Income Opportunity Fund (NMZ) as of October 31, 2023, incorporated herein by reference, and to the references to our firm under the headings “Financial Highlights” in the Prospectus and “Independent Registered Public Accounting Firm” in the Statement of Additional Information.

March 8, 2024 EX-99.T2

NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY

NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned, a director/trustee of the organizations listed on Appendix B, hereby constitutes and appoints MARK J.

March 6, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 6, 2024 (February 28, 2024) Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in its charter) Massachusetts 811-21449 57-1190596 (State or oth

January 2, 2024 424B3

NUVEEN AMT-FREE QUALITY MUNICIPAL INCOME FUND (NYSE: NEA) NUVEEN AMT-FREE MUNICIPAL CREDIT INCOME FUND (NYSE: NVG) NUVEEN TAXABLE MUNICIPAL INCOME FUND (NYSE: NBB) NUVEEN DYNAMIC MUNICIPAL OPPORTUNITIES FUND (NYSE: NDMO) NUVEEN MUNICIPAL HIGH INCOME

Filed Pursuant to Rule 424(b)(3) File No. 333-252927 File No. 333-261173 File No. 333-248493 File No. 333-259086 File No. 333-253965 File No. 333-271575 File No. 333-271871 NUVEEN AMT-FREE QUALITY MUNICIPAL INCOME FUND (NYSE: NEA) NUVEEN AMT-FREE MUNICIPAL CREDIT INCOME FUND (NYSE: NVG) NUVEEN TAXABLE MUNICIPAL INCOME FUND (NYSE: NBB) NUVEEN DYNAMIC MUNICIPAL OPPORTUNITIES FUND (NYSE: NDMO) NUVEEN

October 24, 2023 424B3

NUVEEN AMT-FREE MUNICIPAL CREDIT INCOME FUND (NYSE: NVG) NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NYSE: NMZ) NUVEEN SELECT TAX-FREE INCOME PORTFOLIO (NYSE: NXP) NUVEEN CALIFORNIA SELECT TAX-FREE INCOME PORTFOLIO (NYSE: NXC) NUVEEN MUNICIPAL INC

Filed Pursuant to Rule 424(b)(3) File No. 333-261173 File No. 333-253965 File No. 333-271575 File No. 333-271871 File No. 333-237289 File No. 333-254678 NUVEEN AMT-FREE MUNICIPAL CREDIT INCOME FUND (NYSE: NVG) NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NYSE: NMZ) NUVEEN SELECT TAX-FREE INCOME PORTFOLIO (NYSE: NXP) NUVEEN CALIFORNIA SELECT TAX-FREE INCOME PORTFOLIO (NYSE: NXC) NUVEEN MUNICIPAL

October 13, 2023 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 13, 2023 (October 13, 2023) Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in its charter) Massachusetts 811-21449 57-1190596 (State or o

October 13, 2023 424B3

NUVEEN AMT-FREE QUALITY MUNICIPAL INCOME FUND (NYSE: NEA) NUVEEN AMT-FREE MUNICIPAL CREDIT INCOME FUND (NYSE: NVG) NUVEEN TAXABLE MUNICIPAL INCOME FUND (NYSE: NBB) NUVEEN DYNAMIC MUNICIPAL OPPORTUNITIES FUND (NYSE: NDMO) NUVEEN MUNICIPAL HIGH INCOME

Filed Pursuant to Rule 424(b)(3) File No. 333-252927 File No. 333-261173 File No. 333-248493 File No. 333-259086 File No. 333-253965 File No. 333-271575 File No. 333-271871 NUVEEN AMT-FREE QUALITY MUNICIPAL INCOME FUND (NYSE: NEA) NUVEEN AMT-FREE MUNICIPAL CREDIT INCOME FUND (NYSE: NVG) NUVEEN TAXABLE MUNICIPAL INCOME FUND (NYSE: NBB) NUVEEN DYNAMIC MUNICIPAL OPPORTUNITIES FUND (NYSE: NDMO) NUVEEN

July 14, 2023 424B3

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NYSE: NMZ) (THE “FUND”) SUPPLEMENT DATED JULY 14, 2023 TO THE FUND’S PROSPECTUS AND STATEMENT OF ADDITIONAL INFORMATION (“SAI”) DATED MARCH 5, 2021, EACH AS SUPPLEMENTED, AND EACH PROSPECTUS SUPPLEMENT

Nuveen Municipal High Income Opportunity Fund Filed Pursuant to Rule 424(b)(3) File No.

June 30, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Nuveen Municipal High Income Opportunity Fund UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 31, 2023 424B3

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NYSE: NMZ) (THE “FUND”) SUPPLEMENT DATED MAY 31, 2023 TO THE FUND’S PROSPECTUS AND STATEMENT OF ADDITIONAL INFORMATION (“SAI”) DATED MARCH 5, 2021, AS SUPPLEMENTED

Nuveen Municipal High Income Opportunity Fund Filed Pursuant to Rule 424(b)(3) File No.

April 26, 2023 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 Exhibit 99.1 JOINT FILING AGREEMENT Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange Act or any rule or regulation thereunder (inc

April 26, 2023 SC 13D/A

NMZ / Nuveen Municipal High Income Opportunity Fund / DEUTSCHE BANK AG\ - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 3)* NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES (Title of Class of Securities) 670682111 (CUSIP Number) Deutsche Bank AG\ Taunusanlage 12 Frankfurt Am Main D-60325, Germany (Name, Add

April 26, 2023 SC 13D/A

NMZ / Nuveen Municipal High Income Opportunity Fund / BANK OF AMERICA CORP /DE/ - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 6) NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES (Title of Class of Securities) 670682889 670682111 (CUSIP Number) Bank of America Corporation Bank of America Corporate Center 100 N. Tryon Stree

April 26, 2023 EX-99.2

BANK OF AMERICA CORPORATION LIMITED POWER OF ATTORNEY

Exhibit 99.2 BANK OF AMERICA CORPORATION LIMITED POWER OF ATTORNEY BANK OF AMERICA CORPORATION, a Delaware corporation (the "Corporation"), does hereby make, constitute, and appoint Michael Jentis as an attorney-in-fact for the Corporation acting for the Corporation and in the Corporation's name, place and stead, for the Corporation's use and benefit, to bind the Corporation by his execution of th

April 26, 2023 EX-99.6

ARTICLE I

Exhibit 99.6 AMTP Shares Transition Agreement Nuveen Municipal High Income Opportunity Fund and Banc of America Preferred Funding Corporation April 24, 2023 CONTENTS SECTION PAGE ARTICLE I DEFINITIONS 2 1.1 Incorporation of Certain Definitions by Reference 7 ARTICLE II PURCHASE AND TRANSFER; EXPENSES; ADDITIONAL FEE 7 2.1 Transition 7 2.2 Operating Expenses 8 2.3 Fees 8 2.4 Additional Fee for Fail

April 26, 2023 EX-99.1

JOINT FILING AGREEMENT

Exhibit 99.1 JOINT FILING AGREEMENT Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange Act or any rule or regulation thereunder (including a

April 12, 2023 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 Exhibit 99.1 JOINT FILING AGREEMENT This Statement is filed by Wells Fargo & Company on its own behalf and on behalf of Wells Fargo Municipal Capital Strategies, LLC. Aggregate beneficial ownership reported by Wells Fargo & Company under Item 11 on page 2 is on a consolidated basis and includes any beneficial ownership separately reported herein by Wells Fargo Municipal Capital Strategies,

April 12, 2023 EX-99.2

LIMITED POWER OF ATTORNEY

EX-99.2 Exhibit 99.2 LIMITED POWER OF ATTORNEY Know all by these present, that the undersigned hereby constitutes and appoints each of Debra Cho, Patricia Arce and Stacy Otieno, acting alone, the undersigned’s true and lawful attorney-in-fact to: (1) complete and sign, for and on behalf of the undersigned, all reports and filings required by Sections 13 and 16 of the Securities Exchange Act of 193

April 12, 2023 424B3

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NYSE: NMZ) (THE “FUND”) SUPPLEMENT DATED APRIL 11, 2023 TO THE FUND’S PROSPECTUS AND STATEMENT OF ADDITIONAL INFORMATION (“SAI”) DATED MARCH 5, 2021, AS SUPPLEMENTED

Nuveen Municipal High Income Opportunity Fund Filed Pursuant to Rule 424(b)(3) File No.

April 12, 2023 EX-99.4

CONTENTS SECTION PAGE ARTICLE I DEFINITIONS 2 1.1 Incorporation of Certain Definitions by Reference 7 ARTICLE II PURCHASE AND TRANSFER; EXPENSES; ADDITIONAL FEE 7 2.1 Transition 7 2.2 Operating Expenses 8 2.3 Fees 8 2.4 Additional Fee for Failure to

EX-99.4 Exhibit 99.4 AMTP Shares Transition Agreement Nuveen Municipal High Income Opportunity Fund and Wells Fargo Municipal Capital Strategies, LLC April 3, 2023 CONTENTS SECTION PAGE ARTICLE I DEFINITIONS 2 1.1 Incorporation of Certain Definitions by Reference 7 ARTICLE II PURCHASE AND TRANSFER; EXPENSES; ADDITIONAL FEE 7 2.1 Transition 7 2.2 Operating Expenses 8 2.3 Fees 8 2.4 Additional Fee f

April 12, 2023 SC 13D

NMZ / Nuveen Municipal High Income Opportunity Fund / WELLS FARGO & COMPANY/MN - SC 13D Activist Investment

SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES (Title of Class of Securities) 670682871 (CUSIP Number) Mary E. Schaffner Senior Vice President and Senior Lead Counsel Wells Fargo & Company MAC N9305-176

April 12, 2023 EX-99.3

VOTING TRUST AGREEMENT

EX-99.3 Exhibit 99.3 EXECUTION VERSION VOTING TRUST AGREEMENT THIS VOTING TRUST AGREEMENT (this “Agreement”) is made and entered into effective for all purposes and in all respects as of April 3, 2023 by and among Lord Securities Corporation, as trustee (the “Trustee” or any successor thereto), Wells Fargo Municipal Capital Strategies, LLC, a wholly owned subsidiary of Wells Fargo Bank, National A

April 5, 2023 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 Exhibit 99.1 JOINT FILING AGREEMENT Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange Act or any rule or regulation thereunder (inc

April 5, 2023 SC 13D/A

NMZ / Nuveen Municipal High Income Opportunity Fund / DEUTSCHE BANK AG\ - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 2)* NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES (Title of Class of Securities) 670682 871, 670682 111 (CUSIP Number) Deutsche Bank AG\ Taunusanlage 12 Frankfurt Am Main D-60325, Germa

September 30, 2022 424B3

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NYSE: NMZ) (THE “FUND”) SUPPLEMENT DATED SEPTEMBER 30, 2022 TO THE FUND’S STATEMENT OF ADDITIONAL INFORMATION (“SAI”) DATED MARCH 5, 2021, AS SUPPLEMENTED

Filed Pursuant to Rule 424(b)(3) File No. 333-253965 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NYSE: NMZ) (THE ?FUND?) SUPPLEMENT DATED SEPTEMBER 30, 2022 TO THE FUND?S STATEMENT OF ADDITIONAL INFORMATION (?SAI?) DATED MARCH 5, 2021, AS SUPPLEMENTED 1. The section of the Fund?s SAI entitled ?Investment Policies and Techniques ? Segregation of Assets? is hereby deleted in its entirety. As a ge

September 28, 2022 NPORT-EX

Bonds, Arizona

1 Nuveen Municipal High Income Opportunity Fund Portfolio of Investments July 31, 2022 (Unaudited) NMZ Principal Amount (000) Description (1) Optional Call Provisions (2) Ratings (3) Value LONG-TERM INVESTMENTS - 160.

June 28, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement. ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)). ? Def

June 13, 2022 EX-99.4

CONTENTS SECTION PAGE ARTICLE I DEFINITIONS 1 1.1 Incorporation of Certain Definitions by Reference 6 ARTICLE II PURCHASE AND TRANSFER; EXPENSES; ADDITIONAL FEE 6 2.1 Purchase 6 2.2 Operating Expenses 7 2.3 Fees 7 2.4 Additional Fee for Failure to Co

Exhibit 99.4 Execution Copy AMTP Shares Purchase Agreement Nuveen Municipal High Income Opportunity Fund and DB Municipal Holdings LLC June 9, 2022 CONTENTS SECTION PAGE ARTICLE I DEFINITIONS 1 1.1 Incorporation of Certain Definitions by Reference 6 ARTICLE II PURCHASE AND TRANSFER; EXPENSES; ADDITIONAL FEE 6 2.1 Purchase 6 2.2 Operating Expenses 7 2.3 Fees 7 2.4 Additional Fee for Failure to Comp

June 13, 2022 EX-99.1

JOINT FILING AGREEMENT

Exhibit 99.1 JOINT FILING AGREEMENT Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the ?Exchange Act?), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange Act or any rule or regulation thereunder (including a

June 13, 2022 SC 13D/A

NMZ / Nuveen Municipal High Income Oppty Fund / DEUTSCHE BANK AG\ - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 1)* NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES (Title of Class of Securities) 670682 871, 670682 111 (CUSIP Number) Deutsche Bank AG\ Taunusanlage 12 Frankfurt Am Main D-60325, Germa

March 30, 2022 NPORT-EX

Nuveen Municipal High Income Opportunity Fund

NMZ Nuveen Municipal High Income Opportunity Fund Portfolio of Investments January 31, 2022 (Unaudited) Principal Amount (000) Description (1) Optional Call Provisions (2) Ratings (3) Value LONG-TERM INVESTMENTS – 156.

February 25, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 25, 2022 (February 24, 2022) NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Exact name of registrant as specified in its charter) Massachusetts 811-21449 57-1190596 (State or

February 25, 2022 EX-99.1

Certain Nuveen Closed-End Funds Announce Board’s Approval of Suspension of Previously Adopted Control Share By-Law Board Intends to Appeal U.S. District Court’s Recent Ruling

Exhibit 99.1 Certain Nuveen Closed-End Funds Announce Board?s Approval of Suspension of Previously Adopted Control Share By-Law Board Intends to Appeal U.S. District Court?s Recent Ruling Nuveen AMT-Free Municipal Credit Income Fund (NYSE: NVG), Nuveen AMT-Free Municipal Value Fund (NYSE: NUW), Nuveen AMT-Free Quality Municipal Income Fund (NYSE: NEA), Nuveen Arizona Quality Municipal Income Fund

February 25, 2022 EX-3.1

Amendment No. 1 to Amended and Restated By-Laws

Exhibit 3.1 AMENDMENT NO. 1 TO THE AMENDED AND RESTATED BY-LAWS OF NUVEEN CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS This Amendment No. 1 (this ?Amendment?) to the By-Laws of Nuveen Closed-End Funds organized as Massachusetts business trusts, amended and restated as of October 5, 2020 (the ?By-Laws?) and applicable to each Nuveen Closed-End Fund listed on Exhibit A to the By-Laws

January 4, 2022 SC 13D/A

NMZ / Nuveen Municipal High Income Oppty Fund / BANK OF AMERICA CORP /DE/ - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 5) NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES (Title of Class of Securities) 670682889 (CUSIP Number) Bank of America Corporation Bank of America Corporate Center 100 N. Tryon Street Charlott

January 4, 2022 EX-99.1

JOINT FILING AGREEMENT

Exhibit 99.1 JOINT FILING AGREEMENT Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the ?Exchange Act?), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange Act or any rule or regulation thereunder (including a

January 4, 2022 EX-99.2

BANK OF AMERICA CORPORATION LIMITED POWER OF ATTORNEY

Exhibit 99.2 BANK OF AMERICA CORPORATION LIMITED POWER OF ATTORNEY BANK OF AMERICA CORPORATION, a Delaware corporation (the ?Corporation?), does hereby make, constitute, and appoint Michael Jentis as an attorney-in-fact for the Corporation acting for the Corporation and in the Corporation?s name, place and stead, for the Corporation?s use and benefit, to bind the Corporation by his execution of th

January 4, 2022 EX-99.5

[Amended and Restated Voting Trust Agreement]

Exhibit 99.5 [Amended and Restated Voting Trust Agreement] Chapman and Cutler LLP AMENDED AND RESTATED VOTING TRUST AGREEMENT THIS AMENDED AND RESTATED VOTING TRUST AGREEMENT (this ?Agreement?) is made and entered into effective for all purposes and in all respects as of January 1, 2022, by and among Banc of America Preferred Funding Corporation, a Delaware corporation, including its successors an

December 17, 2021 EX-99.G.4

Notice of Continuance of Investment Sub-Advisory Agreements between Nuveen Fund Advisors, LLC and Nuveen Asset Management, LLC dated July 30, 2021 is filed herewith.

NUVEEN FUNDS NOTICE OF CONTINUANCE OF INVESTMENT SUB-ADVISORY AGREEMENTS WHEREAS, Nuveen Fund Advisors, LLC, a Delaware limited liability company (the ?Manager?) and Nuveen Asset Management, LLC, a Delaware limited liability company (the ?Sub-Adviser?) have entered into Sub-Advisory Agreements (the ?Agreements?), pursuant to which the Sub-Adviser furnishes investment advisory services to the funds

December 17, 2021 EX-99.G.2

Continuance of Investment Management Agreement between the Registrant and Nuveen Fund Advisors, LLC dated July 30, 2021 is filed herewith.

CONTINUANCE OF MANAGEMENT AGREEMENTS Agreement made as of this 30th day of July 2021, by and between the entities listed on Appendix A (the ?Funds?), and Nuveen Fund Advisors, LLC, a Delaware limited liability company (the ?Adviser?), to be effective August 1, 2021.

December 17, 2021 EX-99.R.1

Code of Ethics and Reporting Requirements of Nuveen (including affiliated entities) and the Nuveen Funds, as amended August 9, 2021, is filed herewith.

Nuveen Compliance | 9 August 2021 Code of Ethics SUMMARY AND SCOPE What the Code is about Helping to ensure that Nuveen personnel place the interests of Nuveen clients ahead of their own personal interests.

December 17, 2021 EX-99.H.13

Distribution Agreement Relating to At-the-Market offerings between the Registrant and Nuveen Securities, LLC dated December 16, 2021

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND 333 West Wacker Drive Chicago, Illinois 60606 December 16, 2021 Nuveen Securities, LLC 333 West Wacker Drive Chicago, Illinois 60606 Re: Distribution Agreement Relating to At-the-Market Offerings Ladies and Gentlemen: Nuveen Municipal High Income Opportunity Fund is a Massachusetts business trust operating as a closed-end management investment company (hereinafter referred to as the ?Fund?).

December 17, 2021 424B5

CALCULATION OF REGISTRATION FEE UNDER THE SECURITIES ACT OF 1933 Title of Securities Being Registered Amount Being Registered(1) Proposed Maximum Offering Price Per Unit Proposed Maximum Aggregate Offering Price(2) Amount of Registration Fee(3) Commo

CALCULATION OF REGISTRATION FEE UNDER THE SECURITIES ACT OF 1933 Title of Securities Being Registered Amount Being Registered(1) Proposed Maximum Offering Price Per Unit Proposed Maximum Aggregate Offering Price(2) Amount of Registration Fee(3) Common Shares, $0.

December 17, 2021 EX-99.H.14

Dealer Agreement Relating to At-the-Market offerings between Nuveen Securities, LLC and UBS Securities LLC dated December 17, 2021

DEALER AGREEMENT Nuveen Securities, LLC 333 West Wacker Drive Chicago, Illinois 60606 December 17, 2021 UBS Securities LLC 1285 Avenue of the Americas New York, New York 10019 RE: At-the-Market Offerings by Nuveen Municipal High Income Opportunity Fund Ladies and Gentlemen: From time to time Nuveen Securities, LLC (the ?Manager?, ?we? or ?us?) will act as manager of registered at-the-market offerings by the Nuveen Municipal High Income Opportunity Fund, a Massachusetts business trust (the ?Fund?), of the Fund?s common stock, par value $0.

December 17, 2021 POS EX

As filed with the U.S. Securities and Exchange Commission on December 17, 2021

As filed with the U.S. Securities and Exchange Commission on December 17, 2021 1933 Act File No. 333-253965 1940 Act File No. 811-21449 U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-2 (Check appropriate box or boxes) ? REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ? Pre-Effective Amendment No. ? Post-Effective Amendment No. 2 and/or ? REGISTRATION STATEMENT UNDER

December 17, 2021 EX-99.S

Powers of Attorney for Mses. Lancellotta, Medero, Stockdale, Stone and Wolff and Messrs. Toth, Evans, Hunter, Moschner, Nelson, Young and Thornton dated August 10, 2021 are filed herewith.

NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENT, that the undersigned, in his capacity as a director/trustee of the above-referenced organizations listed on Appendix A hereto (the ?Funds?), hereby constitutes and appoints MARK CZARNIECKI, DIANA R.

December 17, 2021 EX-99.N

Consent of KPMG LLP is filed herewith.

Consent of Independent Registered Public Accounting Firm We consent to the use of our report dated December 28, 2020, with respect to the financial statements and financial highlights of Nuveen Municipal High Income Opportunity Fund, as of October 31, 2020, incorporated herein by reference, and to the references to our firm under the headings ?Financial Highlights? and ?Independent Registered Public Accounting Firm? in the Prospectus and ?Independent Registered Public Accounting Firm? in the Statement of Additional Information filed on Form N-2.

November 4, 2021 424B3

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NYSE: NMZ) (THE “FUND”) SUPPLEMENT DATED NOVEMBER 4, 2021 TO THE FUND’S PROSPECTUS DATED MARCH 5, 2021, AS SUPPLEMENTED

Filed Pursuant to Rule 424(b)(3) File No. 333-253965 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NYSE: NMZ) (THE ?FUND?) SUPPLEMENT DATED NOVEMBER 4, 2021 TO THE FUND?S PROSPECTUS DATED MARCH 5, 2021, AS SUPPLEMENTED The change described below is made to the Fund?s Prospectus effective immediately. ? The following paragraph is removed under the section entitled ?Use of Leverage?: The Fund is li

September 27, 2021 NPORT-EX

Nuveen Municipal High Income Opportunity Fund

NMZ Nuveen Municipal High Income Opportunity Fund Portfolio of Investments July 31, 2021 (Unaudited) Principal Amount (000) Description (1) Optional Call Provisions (2) Ratings (3) Value LONG-TERM INVESTMENTS – 144.

June 25, 2021 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement. ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)). ? Def

June 1, 2021 424B3

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NYSE: NMZ) (THE “FUND”) SUPPLEMENT DATED JUNE 1, 2021 TO THE FUND’S STATEMENT OF ADDITIONAL INFORMATION (“SAI”) DATED MARCH 5, 2021

Filed Pursuant to Rule 424(b)(3) File No. 333-253965 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NYSE: NMZ) (THE ?FUND?) SUPPLEMENT DATED JUNE 1, 2021 TO THE FUND?S STATEMENT OF ADDITIONAL INFORMATION (?SAI?) DATED MARCH 5, 2021 Effective June 1, 2021, Amy B. R. Lancellotta and Joanne T. Medero are appointed to the Fund?s Board of Trustees (the ?Board?) as independent trustees. In addition, Ms.

April 28, 2021 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 2 d112572dex991.htm EX-99.1 Exhibit 99.1 JOINT FILING AGREEMENT Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange Act or any rule o

April 28, 2021 EX-99.2

VOTING TRUST AGREEMENT

Exhibit 99.2 [Execution Copy] VOTING TRUST AGREEMENT THIS VOTING TRUST AGREEMENT (this ?Agreement?) is made and entered into effective for all purposes and in all respects as of April 19, 2021 by and between DB MUNICIPAL HOLDINGS LLC, a Delaware limited liability company, including its successors and assigns by operation of law (the ?Purchaser?), and GLASS, LEWIS & CO., LLC, as trustee (in such ca

April 28, 2021 SC 13D

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. n/a )* NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) ADJUSTABLE RATE MUNIFUND TERM PREFERRE

SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. n/a )* NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES (Title of Class of Securities) 670682 871 (CUSIP Number) Deutsche Bank AG\ Taunusanlage 12 Frankfurt Am Main D-60325, Germany (Name, A

April 28, 2021 EX-99.3

CONTENTS SECTION PAGE ARTICLE I DEFINITIONS 1 1.1 Incorporation of Certain Definitions by Reference 6 ARTICLE II PURCHASE AND TRANSFER; EXPENSES; ADDITIONAL FEE 6 2.1 Purchase 6 2.2 Operating Expenses 7 2.3 Fees 7 2.4 Additional Fee for Failure to Co

Exhibit 99.3 Execution Copy AMTP Shares Purchase Agreement Nuveen Municipal High Income Opportunity Fund and DB Municipal Holdings LLC April 19, 2021 CONTENTS SECTION PAGE ARTICLE I DEFINITIONS 1 1.1 Incorporation of Certain Definitions by Reference 6 ARTICLE II PURCHASE AND TRANSFER; EXPENSES; ADDITIONAL FEE 6 2.1 Purchase 6 2.2 Operating Expenses 7 2.3 Fees 7 2.4 Additional Fee for Failure to Co

April 21, 2021 SC 13D/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 4)* NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) ADJUSTABLE RATE MUNIFUND TERM PREFERRED S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 4)* NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES (Title of Class of Securities) 670682889 (CUSIP Number) Bank of America Corporation Bank of America Corporate Center 100 N. Tryon Street Charlot

April 21, 2021 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 2 brhc10023404ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 JOINT FILING AGREEMENT Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange Act or

April 21, 2021 EX-99.2

BANK OF AMERICA CORPORATION LIMITED POWER OF ATTORNEY

EX-99.2 3 brhc10023404ex99-2.htm EXHIBIT 99.2 Exhibit 99.2 BANK OF AMERICA CORPORATION LIMITED POWER OF ATTORNEY BANK OF AMERICA CORPORATION, a Delaware corporation (the “Corporation”), does hereby make, constitute, and appoint Michael Jentis as an attorney-in-fact for the Corporation acting for the Corporation and in the Corporation’s name, place and stead, for the Corporation’s use and benefit,

April 9, 2021 CORRESP

APPENDIX A Registrant Series/Fund Name CIK File Number Series ID Annual Report Reviewed 1 Nuveen Core Equity Alpha Fund Nuveen Core Equity Alpha Fund 0001385763 811-22003 CEF0001187 12/31/2019 2 Nuveen Diversified Dividend and Income Fund Nuveen Dive

April 9, 2021 Ms. Megan Miller U.S. Securities and Exchange Commission Division of Investment Management, Disclosure Review & Accounting Office 100 F Street N.E. Washington DC 20549 Nuveen Closed-End and Open-End Funds ? Sarbanes Oxley Review Dear Ms. Miller, This letter addresses the comments you provided in a telephone discussion on March 5, 2021, regarding reviews performed by the staff of the

March 29, 2021 NPORT-EX

Nuveen Municipal High Income Opportunity Fund

NMZ Nuveen Municipal High Income Opportunity Fund Portfolio of Investments January 31, 2021 (Unaudited) Principal Amount (000) Description (1) Optional Call Provisions (2) Ratings (3) Value LONG-TERM INVESTMENTS – 140.

March 8, 2021 POS EX

- NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

As filed with the U.S. Securities and Exchange Commission on March 8, 2021 1933 Act File No. 333-253965 1940 Act File No. 811-21449 U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-2 (Check appropriate box or boxes) ? REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ? Pre-Effective Amendment No. ? Post-Effective Amendment No. 1 and/or ? REGISTRATION STATEMENT UNDER THE

March 8, 2021 EX-99.B

Amended and Restated By-Laws of Registrant dated October 5, 2020 are filed herewith.

BY-LAWS OF NUVEEN CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS (Amended and Restated as of October 5, 2020) ARTICLE I DECLARATION OF TRUST AND OFFICES Section 1.

March 8, 2021 EX-99.G.4

Notice of Continuance of Investment Sub-Advisory Agreements between Nuveen Fund Advisors, LLC and Nuveen Asset Management, LLC dated July 31, 2020 is filed herewith.

NUVEEN FUNDS NOTICE OF CONTINUANCE OF INVESTMENT SUB-ADVISORY AGREEMENTS WHEREAS, Nuveen Fund Advisors, LLC, a Delaware limited liability company (the ?Manager ?) and Nuveen Asset Management, LLC, a Delaware limited liability company (the ?Sub-Adviser?) have entered into Sub-Advisory Agreements (the ?Agreements?), pursuant to which the Sub-Adviser furnishes investment advisory services to the fund

March 8, 2021 EX-99.H.11

Distribution Agreement Relating to At-the-Market offerings between the Registrant and Nuveen Securities LLC dated March 5, 2021 is filed herewith.

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND 333 West Wacker Drive Chicago, Illinois 60606 March 5, 2021 Nuveen Securities, LLC 333 West Wacker Drive Chicago, Illinois 60606 Re: Distribution Agreement Relating to At-the-Market Offerings Ladies and Gentlemen: Nuveen Municipal High Income Opportunity Fund is a Massachusetts business trust operating as a closed-end management investment company (hereinafter referred to as the ?Fund?).

March 8, 2021 EX-99.H.12

Dealer Agreement Relating to At-the-Market offerings between Nuveen Securities, LLC and UBS Securities LLC dated March 5, 2021 is filed herewith.

DEALER AGREEMENT Nuveen Securities, LLC 333 West Wacker Drive Chicago, Illinois 60606 March 5, 2021 UBS Securities LLC 1285 Avenue of the Americas New York, New York 10019 RE: At-the-Market Offerings by Nuveen Municipal High Income Opportunity Fund Ladies and Gentlemen: From time to time Nuveen Securities, LLC (the ?Manager?, ?we? or ?us?) will act as manager of registered at-the-market offerings by the Nuveen Municipal High Income Opportunity Fund, a Massachusetts business trust (the ?Fund?), of the Fund?s common stock, par value $0.

March 8, 2021 EX-99.G.2

Continuance of Investment Management Agreement between the Registrant and Nuveen Fund Advisors, LLC dated July 30, 2020 is filed herewith.

EX-99.G.2 3 d128847dex99g2.htm CONTINUANCE OF INVESTMENT MANAGEMENT AGREEMENT CONTINUANCE OF MANAGEMENT AGREEMENTS Agreement made as of this 30th day of July 2020, by and between the entities listed on Appendix A (the “Funds”), and Nuveen Fund Advisors, LLC, a Delaware limited liability company (the “Adviser”), to be effective August 1, 2020. WITNESSETH THAT: WHEREAS, the parties hereto are the co

March 8, 2021 424B5

CALCULATION OF REGISTRATION FEE UNDER THE SECURITIES ACT OF 1933 Title of Securities Being Registered Proposed Maximum Aggregate Offering Price(1) Amount of Registration Fee(2) Common Shares, $0.01 par value $300,000,000 $32,730.00

CALCULATION OF REGISTRATION FEE UNDER THE SECURITIES ACT OF 1933 Title of Securities Being Registered Proposed Maximum Aggregate Offering Price(1) Amount of Registration Fee(2) Common Shares, $0.

March 8, 2021 EX-99.I

Amended and Restated Nuveen Open-End and Closed-End Funds Deferred Compensation Plan for Independent Directors and Trustees, effective May 8, 2020, is incorporated herein by reference to Exhibit (i) to the Registrant’s Registration Statement on Form N-2 (File No. 333-253965), as filed with the SEC via EDGAR Accession No. 0001193125-21-071766 on March 5, 2021.

Exhibit i NUVEEN OPEN-END AND CLOSED-END FUNDS DEFERRED COMPENSATION PLAN FOR INDEPENDENT DIRECTORS AND TRUSTEES (As Amended and Restated Effective May 8, 2020) TABLE OF CONTENTS SECTION 1 PURPOSE OF PLAN; RESTATEMENT EFFECTIVE DATE 1 1.

March 8, 2021 EX-99.K.3

Second Amendment and updated Schedule A, dated February 26, 2018, to the Transfer Agency and Service Agreement dated June 15, 2017 between the Registrant and Computershare Inc. and Computershare Trust Company, N.A. is incorporated herein by reference to Exhibit (k)(3) to the Registrant’s Registration Statement on Form N-2 (File No. 333-253965), as filed with the SEC via EDGAR Accession No. 0001193125-21-071766 on March 5, 2021.

SECOND AMENDMENT TO TRANSFER AGENCY AND SERVICE AGREEMENT This Second Amendment (?Amendment?) ls entered into and effective as of this the 26th day of February, 2018, and hereby amends that certain Transfer Agency and Service Agreement by and among each Nuveen closed-end investment companies listed on Schedule A attached hereto, as may be amended from time to time (?Schedule A?) (each such investment company, a ?Fund?), and Computershare Inc.

March 8, 2021 EX-99.K.4

Third Amendment and updated Schedule A, dated May 11, 2020, to the Transfer Agency and Service Agreement dated June 15, 2017 between the Registrant and Computershare Inc. and Computershare Trust Company, N.A. is filed herewith.

Third Amendment to Transfer Agency and Service Agreement This Third Amendment (?Amendment?), effective as of May 11, 2020 (?Effective Date?), ls to the Transfer Agency and Service Agreement (the ?Agreement?, made as of June 15, 2017, by and between each of the Nuveen closed-end investment companies listed on Schedule A (each such investment company, a ?Fund?, and Computershare Inc.

March 8, 2021 EX-99.S

Powers of Attorney for Mses. Stockdale, Stone and Wolff and Messrs. Toth, Evans, Hunter, Moschner, Nelson, Young and Thornton are filed herewith.

NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENT, that the undersigned, in his capacity as a director/trustee of the above-referenced organizations listed on Appendix A hereto (the ?Funds?), hereby constitutes and appoints MARK CZARNIECKI, DIANA R.

March 8, 2021 N-2ASR

- NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

Table of Contents As filed with the U.S. Securities and Exchange Commission on March 5, 2021 1933 Act File No. 333-[?] 1940 Act File No. 811-21449 U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-2 (Check appropriate box or boxes) ? REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ? Pre-Effective Amendment No. ? Post-Effective Amendment No. and/or ? REGISTRATION STATEME

March 8, 2021 EX-99.N

Consent of KPMG LLP is filed herewith.

Consent of Independent Registered Public Accounting Firm The Board of Trustees of Nuveen Municipal High Income Opportunity Fund: We consent to the use of our report dated December 28, 2020, with respect to the financial statements and financial highlights of Nuveen Municipal High Income Opportunity Fund, as of October 31, 2020, incorporated herein by reference, and to the references to our firm under the headings ?Financial Highlights? and ?Independent Registered Public Accounting Firm? in the Prospectus, and ?Independent Registered Public Accounting Firm? in the Statement of Additional Information filed on Form N-2.

March 8, 2021 EX-99.L.1

Consent of Morgan, Lewis & Bockius LLP is incorporated herein by reference to Exhibit (l)(1) to the Registrant’s Registration Statement on Form N-2 (File No. 333-253965), as filed with the SEC via EDGAR Accession No. 0001193125-21-071766 on March 5, 2021.

March 5, 2021 Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive Chicago, IL 60606 Re: Nuveen Municipal High Income Opportunity Fund (NMZ): Registration Statement on Form N-2 (File No.

March 8, 2021 EX-99.J.2

Amendment and revised Appendix A, dated July 31, 2020, to the Amended and Restated Master Custodian Agreement between the Registrant and State Street Bank and Trust Company dated July 15, 2015 is incorporated herein by reference to Exhibit (j)(2) to the Registrant’s Registration Statement on Form N-2 (File No. 333-253965), as filed with the SEC via EDGAR Accession No. 0001193125-21-071766 on March 5, 2021.

AMENDMENT TO THE AMENDED AND RESTATED CUSTODIAN AGREEMENT BETWEEN EACH MANAGEMENT INVESTMENT COMPANY IDENTIFIED ON APPENDIX A OF THE AGREEMENT AND STATE STREET BANK AND TRUST COMPANY AMENDMENT to the Amended and Restated Custodian Agreement (the ?Agreement?) made as of July 15, 2015 by and between State Street Bank and Trust Company, a Massachusetts trust company (the ?Custodian?) and each managem

March 8, 2021 EX-99.L.2

Opinion of Morgan, Lewis & Bockius LLP is incorporated herein by reference to Exhibit (l)(2) to the Registrant’s Registration Statement on Form N-2 (File No. 333-253965), as filed with the SEC via EDGAR Accession No. 0001193125-21-071766 on March 5, 2021.

March 5, 2021 Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive Chicago, Illinois 60606 Re: Registration Statement on Form N-2 Ladies and Gentlemen: We have acted as counsel to Nuveen Municipal High Income Opportunity Fund (the ?Fund?), a Massachusetts voluntary association (commonly known as a ?business trust?), in connection with the Fund?s Registration Statement on Form N-2 to be filed with the U.

March 8, 2021 EX-99.R.1

Code of Ethics and Reporting Requirements of Nuveen (including affiliated entities) and the Nuveen Funds, as amended August 13, 2020, is filed herewith.

Nuveen Compliance | 13 August 2020 Code of Ethics SUMMARY AND SCOPE What the Code is about Helping to ensure that Nuveen personnel place the interests of Nuveen clients ahead of their own personal interests.

October 6, 2020 EX-3.1

Amended and Restated By-Laws

EX-3.1 Exhibit 3.1 BY-LAWS OF NUVEEN CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS (Amended and Restated as of October 5, 2020) ARTICLE I DECLARATION OF TRUST AND OFFICES Section 1.1 The Trust; Declaration of Trust. These are the By-Laws of each Nuveen Closed-End Fund listed on Exhibit A, each a Massachusetts business trust established by its own Declaration of Trust (each such fund

October 6, 2020 EX-99.1

Advance Notice Deadlines Non-14a-8 Deadline Fund 14a-8 Deadline Earliest Date Latest Date Nuveen AMT-Free Municipal Credit Income Fund (NVG) March 2, 2021 April 1, 2021 April 16, 2021 Nuveen AMT-Free Municipal Value Fund (NUW) March 2, 2021 April 1,

EX-99.1 Exhibit 99.1 Certain Nuveen Closed-End Funds Announce the Board’s Approval of Amended and Restated By-Laws of the Funds Nuveen AMT-Free Municipal Credit Income Fund (NYSE: NVG), Nuveen AMT-Free Municipal Value Fund (NYSE: NUW), Nuveen AMT-Free Quality Municipal Income Fund (NYSE: NEA), Nuveen Arizona Quality Municipal Income Fund (NYSE: NAZ), Nuveen California AMT-Free Quality Municipal In

October 6, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

8-K 1 d23373d8k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 5, 2020 (October 5, 2020) NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Exact name of registrant as specified in its charter) Massachusetts 811-21449

September 29, 2020 NPORT-EX

Nuveen Municipal High Income Opportunity Fund

NMZ Nuveen Municipal High Income Opportunity Fund Portfolio of Investments July 31, 2020 (Unaudited) Principal Amount (000) Description (1) Optional Call Provisions (2) Ratings (3) Value LONG-TERM INVESTMENTS – 145.

June 26, 2020 DEF 14A

- NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

Nuveen Municipal High Income Opportunity Fund UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 27, 2020 NPORT-EX

Nuveen Municipal High Income Opportunity Fund

NMZ Nuveen Municipal High Income Opportunity Fund Portfolio of Investments January 31, 2020 (Unaudited) Principal Amount (000) Description (1) Optional Call Provisions (2) Ratings (3) Value LONG-TERM INVESTMENTS – 136.

March 2, 2020 EX-99.H.10

Dealer Agreement Relating to At-the-Market offerings between Nuveen Securities, LLC and UBS Securities LLC dated February 27, 2020 is incorporated herein by reference to Exhibit (h)(10) to Post-Effective Amendment No. 1 to the Registrant’s Registration Statement on Form N-2 (File No. 333-235960), as filed with the SEC via EDGAR Accession No. 0001193125-20-059121 on March 2, 2020.

EX-99.H.10 2 d854351dex99h10.htm DEALER AGREEMENT DEALER AGREEMENT Nuveen Securities, LLC 333 West Wacker Drive Chicago, Illinois 60606 February 27, 2020 UBS Securities LLC 1285 Avenue of the Americas New York, New York 10019 RE: At-the-Market Offerings by Nuveen Municipal High Income Opportunity Fund Ladies and Gentlemen: From time to time Nuveen Securities, LLC (the “Manager”, “we” or “us”) will

March 2, 2020 POS EX

NMZ / Nuveen Municipal High Income Opportunity Fund POS EX - - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

Nuveen Municipal High Income Opportunity Fund As filed with the U.S. Securities and Exchange Commission on March 2, 2020 1933 Act File No. 333-235960 1940 Act File No. 811-21449 U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-2 (Check appropriate box or boxes) ☒ REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ☐ Pre-Effective Amendment No. ☒ Post-Effective Amendment No

February 27, 2020 CORRESP

NMZ / Nuveen Municipal High Income Opportunity Fund CORRESP - -

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND Nuveen Investments 333 West Wacker Drive Chicago, IL 60606 P 312.

February 20, 2020 CORRESP

NMZ / Nuveen Municipal High Income Opportunity Fund CORRESP - -

Nuveen Municipal High Income Opportunity Fund Kathleen M. Macpeak +1.202.373.6149 [email protected] VIA EDGAR February 20, 2020 Elisabeth Bentzinger U.S. Securities and Exchange Commission Division of Investment Management 100 F Street NE Washington, DC 20549 Re: Nuveen Municipal High Income Opportunity Fund (the “Fund”) File Nos. 333-235960 and 811-21449 Dear Ms. Bentzinger: The pu

September 27, 2019 NPORT-EX

NMZ / Nuveen Municipal High Income Opportunity Fund NPORT-EX - -

NMZ Nuveen Municipal High Income Opportunity Fund Portfolio of Investments July 31, 2019 (Unaudited) Principal Amount (000) Description (1) Optional Call Provisions (2) Ratings (3) Value LONG-TERM INVESTMENTS – 146.

June 28, 2019 DEF 14A

NMZ / Nuveen Municipal High Income Opportunity Fund DEF 14A - - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

DEF 14A 1 d568288ddef14a.htm NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement. ☐ Confidentia

April 11, 2019 EX-99.R.1

TERMS WITH SPECIAL MEANINGS (continued) Independent Director Any director or trustee of an Affiliated Fund who is not an “interested person” within the meaning of Section 2(a)(19) of the Investment Company Act of 1940, as amended. Managed Account Any

Code of Ethics and Reporting Requirements Nuveen Compliance | 1 July 2018 Code of Ethics SUMMARY AND SCOPE What the Code is about Helping to ensure that Nuveen personnel place the interests of Nuveen clients ahead of their own personal interests.

April 11, 2019 486BPOS

NMZ / Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

486BPOS 1 d622713d486bpos.htm NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND As filed with the U.S. Securities and Exchange Commission on April 11, 2019 1933 Act File No. 333-220101 1940 Act File No. 811-21449 U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-2 (Check appropriate box or boxes) ☐ REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ☐ Pre-Effective Amendment No

April 11, 2019 EX-99.S

NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY

Powers of Attorney NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENT, that the undersigned, in her capacity as a director/trustee of the above-referenced organizations listed on Appendix A hereto (the “Funds”), hereby constitutes and appoints MARK CZARNIECKI, DIANA R.

April 11, 2019 EX-99.R.2

Nuveen Funds Code of Ethics for the Independent Trustees

Code of Ethics for the Independent Trustees of Nuveen Funds Nuveen Funds Code of Ethics for the Independent Trustees I.

April 11, 2019 EX-99.G.2

NUVEEN CLOSED-END FUNDS RENEWAL OF INVESTMENT MANAGEMENT AGREEMENTS

Renewal of Investment Management Agreement NUVEEN CLOSED-END FUNDS RENEWAL OF INVESTMENT MANAGEMENT AGREEMENTS This Agreement made this 24th day of July 2018 by and between the funds listed on Schedule A (the “Nuveen Closed-End Funds”), and Nuveen Fund Advisors, LLC, a Delaware limited liability company (the “Adviser”); WHEREAS, the parties hereto are the contracting parties under each certain Inv

April 11, 2019 EX-99.L.1

April 11, 2019

Consent of Morgan, Lewis & Bockius LLP Thomas S. Harman 1.202.373.6725 [email protected] April 11, 2019 Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive Chicago, IL 60606 Re: Nuveen Municipal High Income Opportunity Fund (File Nos. 333-220101 and 811-21449) Ladies and Gentlemen: We hereby consent to all references to our firm in Post-Effective Amendment No. 1 under t

April 11, 2019 EX-99.K.2

First Amendment and updated Schedule A, dated September 7, 2017, to the Transfer Agency and Service Agreement dated June 15, 2017 between the Registrant and ComputerShare Inc. and ComputerShare Trust Company, N.A. is incorporated herein by reference to Exhibit (k)(2) to Post-Effective Amendment No. 1 to the Registrant’s Registration Statement on Form N-2 (File No. 333-220101), as filed with the SEC via EDGAR Accession No. 0001193125-19-104006 on April 11, 2019.

First Amendment and updated Schedule A to Transfer Agency and Service Agreement Exhibit k.

April 11, 2019 EX-99.J.2

APPENDIX A AMENDED AND RESTATED MASTER CUSTODIAN AGREEMENT July 15, 2015 (Updated as of August 1, 2017) NUVEEN CLOSED-END MANAGEMENT INVESTMENT COMPANIES

Appendix A to the Amended and Restated Master Custodian Agreement Exhibit j.2 APPENDIX A TO AMENDED AND RESTATED MASTER CUSTODIAN AGREEMENT July 15, 2015 (Updated as of August 1, 2017) NUVEEN CLOSED-END MANAGEMENT INVESTMENT COMPANIES Diversified Real Asset Income Fund Nuveen All Cap Energy MLP Opportunities Fund Nuveen AMT-Free Municipal Credit Income Fund f/k/a Nuveen Enhanced AMT-Free Municipal

April 11, 2019 EX-99.E

Terms and Conditions of the Dividend Reinvestment Plan, dated May 18, 2016, is incorporated herein by reference to Exhibit (e) to Post-Effective Amendment No. 1 to the Registrant’s Registration Statement on Form N-2 (File No. 333-220101), as filed with the SEC via EDGAR Accession No. 0001193125-19-104006 on April 11, 2019.

NUVEEN EXCHANGE-TRADED FUNDS (except Nuveen Municipal Value Fund, Inc.) Terms and Conditions of the Dividend Reinvestment Plan This Dividend Reinvestment Plan for the Nuveen Exchange-Traded Funds set forth on Exhibit A attached hereto (each, a “Fund”) provides for reinvestment of Fund distributions, consisting of income dividends, returns of capital and capital gain distributions paid by the Fund,

April 11, 2019 EX-99.N

Consent of Independent Registered Public Accounting Firm

Consent of KPMG LLP Consent of Independent Registered Public Accounting Firm The Board of Trustees Nuveen Municipal High Income Opportunity Fund: We consent to the use of our report dated December 27, 2018, with respect to the financial statements and financial highlights of Nuveen Municipal High Income Opportunity Fund, incorporated by reference herein, and to the references to our firm under the headings “Financial Highlights” and “Independent Registered Public Accounting Firm” in the Prospectus and “Independent Registered Public Accounting Firm” in the Statement of Additional Information filed on Form N-2.

April 11, 2019 EX-99.G.4

NUVEEN CLOSED-END FUNDS NOTICE OF CONTINUANCE OF INVESTMENT SUB-ADVISORY AGREEMENTS

Notice of Continuance NUVEEN CLOSED-END FUNDS NOTICE OF CONTINUANCE OF INVESTMENT SUB-ADVISORY AGREEMENTS WHEREAS, Nuveen Fund Advisors, LLC, a Delaware limited liability company (the “Manager”) and Nuveen Asset Management, LLC, a Delaware limited liability company (the “Sub-Adviser”) have entered into Sub-Advisory Agreements (the “Agreements”), pursuant to which the Sub-Adviser furnishes investme

April 1, 2019 EX-99.CERT

CERTIFICATIONS

EX-99.CERT 2 d654712dex99cert.htm CERTIFICATIONS CERTIFICATIONS I, Cedric H. Antosiewicz, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under

April 1, 2019 N-Q

NMZ / Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Quarterly Schedule of Portfolio Holdings)

Nuveen Municipal High Income Opportunity Fund UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address of principal executive offices) (Zip code) Gifford R.

September 28, 2018 EX-99.CERT

CERTIFICATIONS

EX-99.CERT 2 d605517dex99cert.htm CERTIFICATIONS CERTIFICATIONS I, Cedric H. Antosiewicz, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under

September 28, 2018 N-Q

NMZ / Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Quarterly Schedule of Portfolio Holdings)

Nuveen Municipal High Income Opportunity Fund UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address of principal executive offices) (Zip code) Gifford R.

July 5, 2018 CORRESP

JHY / Nuveen High Income 2020 Target Term Fund CORRESP

Nuveen Investments June 29, 2018 Mr. Jason Fox U.S. Securities and Exchange Commission Division of Investment Management, Insured Investments Office 100 F Street N.E. Washington DC 20549 Re: Nuveen Closed-End and Open-End Funds – Sarbanes Oxley Review Dear Mr. Fox: This letter addresses the comments Ms. Sheila Stout provided in a telephone discussion on April 17, 2018, regarding reviews performed

June 28, 2018 DEF 14A

NMZ / Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

DEF 14A 1 d587815ddef14a.htm NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement. ☐ Confidentia

March 29, 2018 N-Q

NMZ / Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Quarterly Schedule of Portfolio Holdings)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address of principal executive offices) (Zip code) Gifford R.

March 29, 2018 EX-99.CERT

CERTIFICATIONS

EX-99.CERT 2 d547803dex99cert.htm CERTIFICATIONS CERTIFICATIONS I, Cedric H. Antosiewicz, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under

February 27, 2018 SC 13D/A

NMZ / Nuveen Municipal High Income Opportunity Fund / BANK OF AMERICA CORP /DE/ - NONE Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 03 )* NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES (Title of Class of Securities) 670682806, 670682889 (CUSIP Number) Bank of America Corporation, Bank of America Corporate Center, 100 N. Tryon

February 27, 2018 EX-1.1

SCHEDULE I EXECUTIVE OFFICERS AND DIRECTORS OF REPORTING PERSONS

EX-1.1 2 schedule1.htm EX-1.1 SCHEDULE I EXECUTIVE OFFICERS AND DIRECTORS OF REPORTING PERSONS The following sets forth the name and present principal occupation of each executive officer and director of Bank of America Corporation. The business address of each of the executive officers and directors of Bank of America Corporation is Bank of America Corporate Center, 100 North Tryon Street, Charlo

February 27, 2018 EX-1.2

SCHEDULE II LITIGATION SCHEDULE

EX-1.2 3 schedule2.htm EX-1.2 SCHEDULE II LITIGATION SCHEDULE MLPF&S SEC AML Order 12/21/2017 The Securities and Exchange Commission ("SEC") deems it appropriate and in the public interest that public administrative and cease-and-desist proceedings be, and hereby are, instituted pursuant to Sections 15(b), and 21c of the Securities Exchange Act of 1934 ("Exchange Act") and Section 203(e) of the In

February 27, 2018 EX-99.2

BANK OF AMERICA CORPORATION LIMITED POWER OF ATTORNEY

EX-99.2 5 ex992poa13d.htm EX-99.2 Exhibit 99.2 BANK OF AMERICA CORPORATION LIMITED POWER OF ATTORNEY BANK OF AMERICA CORPORATION, a Delaware corporation (the "Corporation"), does hereby irrevocably make, constitute, and appoint each of Eugene Rosati, Sarah Turner, Ronnie Ojera, Kelvin Kwok and Harshini Pavan Gopa as an attorney-in-fact for the Corporation acting for the Corporation and in the Corp

February 27, 2018 EX-99.4

ARTICLE I DEFINITIONS

EX-99.4 6 ex994exchangeagree13d.htm EX-99.4 Exhibit 99.4 Exchange Agreement Nuveen Municipal High Income Opportunity Fund and Banc of America Preferred Funding Corporation February 26, 2018 CONTENTS SECTION PAGE ARTICLE I DEFINITIONS 1 1.1 Incorporation of Certain Definitions by Reference 6 ARTICLE II EXCHANGE; CANCELLATION OF VMTP SHARES; EXPENSES; ADDITIONAL FEE 6 2.1 Exchange 6 2.2 Cancellation

February 27, 2018 EX-99.1

JOINT FILING AGREEMENT

Exhibit 99.1 JOINT FILING AGREEMENT Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange Act or any rule or regulation thereunder (including a

September 29, 2017 EX-99.CERT

CERTIFICATIONS

EX-99.CERT 2 d454375dex99cert.htm CERTIFICATIONS CERTIFICATIONS I, Cedric H. Antosiewicz, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under

September 29, 2017 N-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address of principal executive offices) (Zip code) Gifford R.

September 14, 2017 CORRESP

NMZ / Nuveen Municipal High Income Opportunity Fund CORRESP

Acceleration Request Nuveen Investments 333 West Wacker Drive Chicago, IL 60606 P 312.

September 14, 2017 CORRESP

NMZ / Nuveen Municipal High Income Opportunity Fund CORRESP

SEC Response Letter Kathleen M. Macpeak +1.202.373.6149 [email protected] VIA EDGAR September 14, 2017 Elisabeth Bentzinger, Senior Counsel Securities and Exchange Commission Division of Investment Management 100 F Street, N.E. Washington, DC 20549 Re: Nuveen Municipal High Income Opportunity Fund (the “Fund”) File Nos: 333-220101 and 811-21449 Dear Ms. Bentzinger: The purpose of th

June 23, 2017 DEF 14A

Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement. ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)). ☒ Def

May 15, 2017 144

Nuveen Municipal High Income Opportunity Fund 144

144 1 d380218d144.htm 144 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933 SEC USE ONLY DOCUMENT SEQUENCE NO. CUSIP NUMBER WORK LOCATION ATTENTION: Transmit for filing 3 copies of this form concurrently with either placing an order with a broker to execute sale or executing a

March 31, 2017 N-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity

N-Q 1 nq.htm NMZ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address of

March 31, 2017 EX-99.CERT

/s/ Cedric H. Antosiewicz Cedric H. Antosiewicz Chief Administrative Officer (principal executive officer)

EX-99.CERT 2 ex99cert.htm CERTIFICATIONS CERTIFICATIONS I, Cedric H. Antosiewicz, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which su

February 10, 2017 EX-99.I

NUVEEN OPEN-END AND CLOSED-END FUNDS DEFERRED COMPENSATION PLAN FOR INDEPENDENT DIRECTORS AND TRUSTEES PARTICIPATING FUNDS

EX-99.I 2 d160898dex99i.htm NUVEEN OPEN-END AND CLOSED-END FUNDS DEFERRED COMPENSATION PLAN NUVEEN OPEN-END AND CLOSED-END FUNDS DEFERRED COMPENSATION PLAN FOR INDEPENDENT DIRECTORS AND TRUSTEES PARTICIPATING FUNDS Participating funds 1 : Funds from which director compensation can be deferred 2 : AUM ³ $270MM 3 : funds do not lose Participating status from a subsequent loss of assets 4 : list upda

February 10, 2017 EX-99.N

Consent of Independent Registered Public Accounting Firm

Consent of Independent Registered Public Accounting Firm The Board of Trustees of Nuveen Municipal High Income Opportunity Fund: We consent to the use of our report dated December 29, 2016, with respect to the financial statements of Nuveen Municipal High Income Opportunity Fund, incorporated herein by reference, and to the references to our firm under the headings ?Financial Highlights? and ?Independent Registered Public Accounting Firm? in the Prospectus, and ?Financial Statements? and ?Independent Registered Public Accounting Firm? in the Statement of Additional Information filed on Form N-2.

February 10, 2017 486BPOS

As filed with the U.S. Securities and Exchange Commission on February 10, 2016

486BPOS 1 d160898d486bpos.htm NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND As filed with the U.S. Securities and Exchange Commission on February 10, 2016 1933 Act File No. 333-211793 1940 Act File No. 811-21449 U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-2 (Check appropriate box or boxes) ☒ REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ☐ Pre-Effective Amendment

October 6, 2016 CORRESP

Nuveen Municipal High Income Opportunity Fund ESP

CORRESP 1 filename1.htm Thomas S. Harman +1.202.373.6725 [email protected] VIA EDGAR October 6, 2016 Elisabeth Bentzinger Senior Counsel Securities and Exchange Commission Division of Investment Management 100 F Street, N.E. Washington, DC 20549 Re: Nuveen AMT-Free Municipal Value Fund (“NUW” or a “Fund”) (File Nos. 333-211789 and 811-22253) and Nuveen Municipal High Income Opportunity

October 6, 2016 CORRESP

Nuveen Municipal High Income Opportunity Fund ESP

CORRESP 1 filename1.htm Nuveen Investments 333 West Wacker Drive Chicago, IL 60606 P 312 9177700 www.nuveen.com October 6, 2016 VIA EDGAR U.S. Securities and Exchange Commission 100 F Street, NE Washington, DC 20549 Attn: Ms. Elisabeth Bentzinger Re: Request for Acceleration of the Effective Date of Nuveen Municipal High Income Opportunity Fund’s Pre-Effective Amendment No. 3 Under the Securities

October 4, 2016 CORRESP

Nuveen Municipal High Income Opportunity Fund ESP

CORRESP 1 filename1.htm Thomas S. Harman +1.202.373.6725 [email protected] VIA EDGAR October 4, 2016 Elisabeth Bentzinger Senior Counsel Securities and Exchange Commission Division of Investment Management 100 F Street, N.E. Washington, DC 20549 Re: Nuveen AMT-Free Municipal Value Fund (“NUW” or a “Fund”) (File Nos. 333-211789 and 811-22253) and Nuveen Municipal High Income Opportunity

September 29, 2016 EX-99.CERT

/s/ Gifford R. Zimmerman Gifford R. Zimmerman Chief Administrative Officer (principal executive officer)

EX-99.CERT 2 ex99cert.htm CERTIFICATIONS CERTIFICATIONS I, Gifford R. Zimmerman, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which suc

September 29, 2016 N-Q

Nuveen Municipal High Income Opportunity Fund NMZ (Quarterly Schedule of Portfolio Holdings)

N-Q 1 nmz.htm NMZ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address o

September 13, 2016 AW WD

Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

AW WD 1 d160898dawwd.htm NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive Chicago, Illinois 60606 September 13, 2016 VIA EDGAR U.S. Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Attn: Elisabeth Bentzinger Re: Nuveen Municipal High Income Opportunity Fund (File Nos. 333-211793 and 811-21449): Request for W

September 13, 2016 AW

Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

Nuveen Municipal High Income Opportunity Fund Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive Chicago, Illinois 60606 September 13, 2016 VIA EDGAR U.

September 12, 2016 AW

Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

Nuveen Municipal High Income Opportunity Fund Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive, Chicago, Illinois 60606 September 12, 2016 VIA EDGAR U.

August 30, 2016 25

Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

25 1 d235114d25.htm NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 25 NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number: 001-31887 Issuer: Nuveen Municipal High Income Opportunity Fund Exchange: NYSE MKT (Exact name of Issuer as speci

August 23, 2016 EX-99.2

BY-LAWS NUVEEN LEVERAGED MUNICIPAL CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS (Amended and Restated as of November 18, 2009) ARTICLE I DECLARATION OF TRUST AND OFFICES

EX-99.2 2 d243623dex992.htm BY-LAWS BY-LAWS OF NUVEEN LEVERAGED MUNICIPAL CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS (Amended and Restated as of November 18, 2009) ARTICLE I DECLARATION OF TRUST AND OFFICES Section 1.1 The Trust; Declaration of Trust. These are the By-Laws of each Nuveen Leveraged Municipal Closed-End Fund listed on Exhibit A, each a Massachusetts business trust e

August 23, 2016 8-A12B

Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 Nuveen Municipal High Income Opportunity Fund (Exact Name of Registrant as Specified in Its Charter) MASSACHUSETTS 57-1190596 (State of Incorporation or Organization) (I.R.S. Employer Identificatio

August 23, 2016 8-A12B

Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 Nuveen Municipal High Income Opportunity Fund (Exact Name of Registrant as Specified in Its Charter) MASSACHUSETTS 57-1190596 (State of Incorporation or Organization) (I.R.S. Employer Identificatio

August 23, 2016 EX-99.2

BY-LAWS NUVEEN LEVERAGED MUNICIPAL CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS (Amended and Restated as of November 18, 2009) ARTICLE I DECLARATION OF TRUST AND OFFICES

EX-99.2 2 d243623dex992.htm BY-LAWS BY-LAWS OF NUVEEN LEVERAGED MUNICIPAL CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS (Amended and Restated as of November 18, 2009) ARTICLE I DECLARATION OF TRUST AND OFFICES Section 1.1 The Trust; Declaration of Trust. These are the By-Laws of each Nuveen Leveraged Municipal Closed-End Fund listed on Exhibit A, each a Massachusetts business trust e

August 5, 2016 8-K

Other Events

8-K 1 d215495d8k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2016 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in its charter) Massachusetts 811-21449 57-1190596 (S

June 24, 2016 DEF 14A

Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement. ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)). x Def

March 31, 2016 N-Q

Nuveen Municipal High Income Opportunity Fund NMZ (Quarterly Schedule of Portfolio Holdings)

N-Q 1 nq2.htm NMZ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address o

March 31, 2016 EX-99.CERT

/s/ Gifford R. Zimmerman Gifford R. Zimmerman Chief Administrative Officer (principal executive officer)

CERTIFICATIONS I, Gifford R. Zimmerman, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading wi

March 28, 2016 EX-99.K.3

AMENDMENT To Transfer Agency and Service Agreement State Street Bank and Trust Company

EX-99.K.3 3 d160898dex99k3.htm AMENDMENT DATED JULY 15,2015 TO THE TRANSFER AGENCY AND SERVICE AGREEMENT Exhibit k.3 AMENDMENT To Transfer Agency and Service Agreement Between Each of the Nuveen Closed-End Investment Companies Listed on Exhibit A to the Agreement And State Street Bank and Trust Company This Amendment is made as of this 15th day of July 2015 to the Transfer Agency and Service Agree

March 28, 2016 EX-99.N

Consent of Independent Registered Public Accounting Firm

Consent of Independent Registered Public Accounting Firm The Board of Trustees of Nuveen Municipal High Income Opportunity Fund We consent to the use of our report dated December 28, 2015, with respect to the financial statements of Nuveen Municipal High Income Opportunity Fund, incorporated herein by reference, and to the references to our firm under the headings ?Financial Highlights? and ?Independent Registered Public Accounting Firm? in the Prospectus and ?Financial Statements? and ?Independent Registered Public Accounting Firm? in the Statement of Additional Information filed on Form N-2.

March 28, 2016 486BPOS

As filed with the U.S. Securities and Exchange Commission on March 28, 2016

486BPOS 1 d160898d486bpos.htm NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND As filed with the U.S. Securities and Exchange Commission on March 28, 2016 1933 Act File No. 333-187032 1940 Act File No. 811-21449 U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-2 (Check appropriate box or boxes) x REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Pre-Effective Amendment No.

March 28, 2016 EX-99.S

NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY

Exhibit s.1 NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENT, that the undersigned, in his capacity as a director/trustee of the above-referenced organizations listed on Appendix A hereto (the ?Funds?), hereby constitutes and appoints MARK CZARNIECKI, KEVIN J. McCARTHY, KATHLEEN L. PRUDHOMME, CHRISTOPHER M. ROHRBACHER, MARK L. WINGET, GIFFORD R. ZIMMERMAN and ERIC F. FES

March 28, 2016 EX-99.K.2

SCHEDULE A Nuveen Closed-End Funds Dated: January 7, 2016

EX-99.K.2 2 d160898dex99k2.htm SCHEDULE A DATED JANUARY 7, 2016 TO THE TRANSFER AGENCY AND SERVICE AGREEMENT Exhibit k.2 SCHEDULE A Nuveen Closed-End Funds Dated: January 7, 2016 Nuveen All Cap Energy MLP Opportunities Fund* Nuveen AMT-Free Municipal Income Fund* Nuveen AMT-Free Municipal Value Fund* Nuveen Arizona Premium Income Municipal Fund* Nuveen Build America Bond Fund* Nuveen Build America

September 29, 2015 N-Q

Nuveen Municipal High Income Opportunity Fund NMZ (Quarterly Schedule of Portfolio Holdings)

N-Q 1 nq2.htm NMZ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address o

September 29, 2015 EX-99.CERT

/s/ Gifford R. Zimmerman Gifford R. Zimmerman Chief Administrative Officer (principal executive officer)

EX-99.CERT 2 nmzcertification2.htm CERTIFICATIONS CERTIFICATIONS I, Gifford R. Zimmerman, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under

July 21, 2015 CORRESP

Page 1 of 8

CORRESP 1 filename1.htm July 21, 2015 Mr. Jason P. Fox U.S. Securities and Exchange Commission Division of Investment Management, Insured Investments Office 100 F Street N.E. Washington DC 20549 Re: Nuveen Closed-End and Open-End Funds - Sarbanes Oxley Review Dear Mr. Fox: This letter addresses the comments you provided in a telephone discussion on June 18, 2015, regarding reviews performed by the

July 2, 2015 EX-1.1

SCHEDULE I

SCHEDULE I EXECUTIVE OFFICERS AND DIRECTORS OF REPORTING PERSONS The following sets forth the name and present principal occupation of each executive officer and director of Bank of America Corporation.

July 2, 2015 SC 13D/A

NMZ / Nuveen Municipal High Income Opportunity Fund / BANK OF AMERICA CORP /DE/ - NONE Activist Investment

SC 13D/A 1 doc1.htm NONE UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 02 )* NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) VARIABLE RATE MUNIFUND TERM PREFERRED SHARES (Title of Class of Securities) 670682608, 670682707, 670682806 (CUSIP Number) Bank of America Corporation, Bank of Amer

July 2, 2015 EX-1.2

SCHEDULE II

SCHEDULE II LITIGATION SCHEDULE MLPF&S SEC MCDC Order 6/18/2015 The Securities and Exchange Commission (“SEC”) deems it appropriate and in the public interest that public administrative and cease-and-desist proceedings be, and hereby are, instituted against Merrill Lynch, Pierce, Fenner & Smith, Incorporated ("MLPF&S").

July 2, 2015 EX-99.7

JOINT FILING AGREEMENT

Exhibit 99.7 JOINT FILING AGREEMENT Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange Act or any rule or regulation thereunder (including a

July 2, 2015 EX-99.9

VMTP Exchange Agreement

EX-99.9 6 vmtpeaexhibit999nmz.htm VMTP EXCHANGE AGREEMENT DATED JULY 1, 2015 Exhibit 99.9 VMTP Exchange Agreement Nuveen Municipal High Income Opportunity Fund and Banc of America Preferred Funding Corporation July 1, 2015 CONTENTS SECTION PAGE ARTICLE I DEFINITIONS 1 1.1 Incorporation of Certain Definitions by Reference 7 ARTICLE II EXCHANGE; CANCELLATION OF OLD VMTP SHARES; EXPENSES; ADDITIONAL

July 2, 2015 EX-99.8

LIMITED POWER OF ATTORNEY

Exhibit 99.8 LIMITED POWER OF ATTORNEY BANK OF AMERICA CORPORATION, a Delaware corporation (the "Corporation"), does hereby irrevocably make, constitute, and appoint each of Sun Kyung Bae, Szabina Biro, Christopher Johnston and Eugene Rosati as an attorney-in-fact for the Corporation acting for the Corporation and in the Corporation's name, place and stead, for the Corporation's use and benefit, t

July 1, 2015 DEF 14A

Nuveen Municipal High Income Opportunity Fund NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement. ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)). x Def

April 1, 2015 EX-99.CERT

/s/ Gifford R. Zimmerman Gifford R. Zimmerman Chief Administrative Officer (principal executive officer)

EX-99.CERT 2 nmzcertification2.htm CERTIFICATIONS CERTIFICATIONS I, Gifford R. Zimmerman, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under

April 1, 2015 N-Q

Nuveen Municipal High Income Opportunity Fund NMZ (Quarterly Schedule of Portfolio Holdings)

N-Q 1 nq2.htm NMZ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address o

February 23, 2015 EX-99.R

Nuveen Investments Compliance

EX-99.R 6 d864533dex99r.htm CODE OF ETHICS Nuveen Investments Compliance April 2014 Code of Ethics Note that capitalized terms have special meanings, as defined in the boxes on pages 2 and 3. Summary and Scope What the Code is about Helping to ensure that Nuveen Investments personnel place the interests of Nuveen clients ahead of their own personal interests. Who the Code applies to and what the i

February 23, 2015 EX-99.L

Almaty Astana Beijing Boston Brussels Chicago Dallas Dubai Frankfurt Harrisburg Hartford Houston London Los Angeles Miami Moscow New York Orange County Paris Philadelphia Pittsburgh Princeton San Francisco Santa Monica Silicon Valley Tokyo Washington

Opinion and Consent of Morgan, Lewis & Bockius Morgan, Lewis & Bockius LLP 2020 K Street, NW Washington, DC 20006 Tel.

February 23, 2015 EX-99.N

Consent of Independent Registered Public Accounting Firm

EX-99.N 5 d864533dex99n.htm CONSENT OF KPMG LLP Consent of Independent Registered Public Accounting Firm The Board of Trustees of Nuveen Municipal High Income Opportunity Fund We consent to the use of our report dated December 26, 2014 with respect to the financial statements of Nuveen Municipal High Income Opportunity Fund, incorporated herein by reference, and to the references to our firm under

February 23, 2015 EX-99.G.1

Investment Management Agreement between the Registrant and Nuveen Fund Advisors, LLC dated October 1, 2014 is incorporated herein by reference to Exhibit (g)(1) to Post-Effective Amendment No. 3 to the Registrant’s Registration Statement on Form N-2 (File No. 333-187032), as filed with the SEC via EDGAR Accession No. 0001193125-15-058270 on February 23, 2015.

Investment Management Agreement INVESTMENT MANAGEMENT AGREEMENT AGREEMENT made this 1st day of October 2014, by and between Nuveen Municipal High Income Opportunity Fund, a Massachusetts business trust (the “Fund”), and NUVEEN FUND ADVISORS, LLC, a Delaware limited liability company (the “Adviser”).

February 23, 2015 EX-99.G.2

Sub-Advisory Agreement between Nuveen Fund Advisors, LLC and Nuveen Asset Management, LLC dated October 1, 2014 is incorporated herein by reference to Exhibit (g)(2) to Post-Effective Amendment No. 3 to the Registrant’s Registration Statement on Form N-2 (File No. 333-187032), as filed with the SEC via EDGAR Accession No. 0001193125-15-058270 on February 23, 2015.

EX-99.G.2 3 d864533dex99g2.htm INVESTMENT SUB-ADVISORY AGREEMENT Exhibit g.2 INVESTMENT SUB-ADVISORY AGREEMENT (Nuveen Closed-End Municipal Bond Funds) THIS AGREEMENT is made as of the 1st day of October 2014, between Nuveen Fund Advisors, LLC, a Delaware limited liability company (the “Adviser”), and Nuveen Asset Management, LLC a Delaware limited liability company (the “Sub-Adviser”). WHEREAS, t

February 23, 2015 486BPOS

NMZ / Nuveen Municipal High Income Opportunity Fund 486BPOS - - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

Nuveen Municipal High Income Opportunity Fund As filed with the U.S. Securities and Exchange Commission on February 23, 2015 1933 Act File No. 333-187032 1940 Act File No. 811-21449 U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-2 (Check appropriate box or boxes) x REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Pre-Effective Amendment No. x Post-Effective Amendment

September 29, 2014 N-Q

Nuveen Municipal High Income Opportunity Fund - NMZ

N-Q 1 nq2.htm NMZ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address o

September 29, 2014 EX-99.CERT

/s/ Gifford R. Zimmerman Gifford R. Zimmerman Chief Administrative Officer (principal executive officer)

EX-99.CERT 2 nmzcertification2.htm CERTIFICATIONS CERTIFICATIONS I, Gifford R. Zimmerman, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under

July 3, 2014 DEFA14A

NXQ / Nuveen Select Tax-Free Income Portfolio II, Inc. DEFA14A - - PRESS RELEASE

Press Release UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(

June 18, 2014 DEFA14A

- PRESS RELEASE

DEFA14A 1 d745674ddefa14a.htm PRESS RELEASE UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Onl

June 18, 2014 DEFA14A

- PRESS RELEASE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant [X] Filed by a Party other than the Registrant [ ] Check the appropriate box: [ ] Preliminary Proxy Statement [ ] Confidential, for use of the Commission Only (as permitted by Rule 14a-6(e)(2))

June 18, 2014 DEFA14A

- PRESS RELEASE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant [X] Filed by a Party other than the Registrant [ ] Check the appropriate box: [ ] Preliminary Proxy Statement [ ] Confidential, for use of the Commission Only (as permitted by Rule 14a-6(e)(2))

June 16, 2014 DEF 14A

- CLOSED-END PROXY

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) x Defin

May 16, 2014 PRE 14A

- CLOSED-END PROXY

PRE 14A 1 d721127dpre14a.htm CLOSED-END PROXY UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: x Preliminary Proxy Statement ¨ Confidential, for Use of the Commission O

May 1, 2014 DEFA14A

- PRESS RELEASE

DEFA14A 1 d719867ddefa14a.htm PRESS RELEASE UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant [X] Filed by a Party other than the Registrant [ ] Check the appropriate box: [ ] Preliminary Proxy Statement [ ] Confidential, for use of the Commis

April 1, 2014 EX-99.CERT

/s/ Gifford R. Zimmerman Gifford R. Zimmerman Chief Administrative Officer (principal executive officer)

EX-99.CERT 2 nmzcertification2.htm CERTIFICATIONS CERTIFICATIONS I, Gifford R. Zimmerman, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under

April 1, 2014 N-Q

Quarterly Schedule of Portfolio Holdings - NMZ

N-Q 1 nq2.htm NMZ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address o

February 5, 2014 EX-99.N

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Consent of Ernst & Young LLP CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the reference to our firm under the captions “Financial Highlights” and “Independent Registered Public Accounting Firm” and to the incorporation by reference of our report dated December 27, 2013 in the Registration Statement (Form N-2) and related Prospectus and Statement of Additional Information of Nuveen Municipal High Income Opportunity Fund filed with the Securities and Exchange Commission in this Post-Effective Amendment No.

February 5, 2014 EX-99.S.2

NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY

EX-99.S.2 5 d661394dex99s2.htm POWERS OF ATTORNEY, DATED SEPTEMBER 1, 2013 NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENT, that the undersigned, in his capacity as a director/trustee of the above-referenced organizations listed on Appendix A hereto (the “Funds”), hereby constitutes and appoints MARK CZARNIECKI, KEVIN J. McCARTHY, KATHLEEN L. PRUDHOMME, CHRISTOPHER M. R

February 5, 2014 EX-99.L.2

February 5, 2014

EX-99.L.2 2 d661394dex99l2.htm CONSENT OF BINGHAM MCCUTCHEN LLP February 5, 2014 Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive Chicago, IL 60606 Re: Nuveen Municipal High Income Opportunity Fund (File Nos. 333-187032 and 811-21449) Dear Ladies and Gentlemen: We hereby consent to all references to our firm in Post-Effective Amendment No. 2 under the Securities Act of 1933 to t

February 5, 2014 EX-99.S.1

NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY

Powers of Attorney, dated April 17, 2013 NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENT, that the undersigned, in his capacity as a director/trustee of the above-referenced organizations listed on Appendix A hereto (the “Funds”), hereby constitutes and appoints KEVIN J.

February 5, 2014 486BPOS

- NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

Nuveen Municipal High Income Opportunity Fund As filed with the U.S. Securities and Exchange Commission on February 5, 2014 1933 Act File No. 333-187032 1940 Act File No. 811-21449 U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-2 (Check appropriate box or boxes) x REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Pre-Effective Amendment No. x Post-Effective Amendment N

September 27, 2013 N-Q

Quarterly Schedule of Portfolio Holdings - NMZ

N-Q 1 nq2.htm NMZ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address o

September 27, 2013 EX-99.CERT

/s/ Gifford R. Zimmerman Gifford R. Zimmerman Chief Administrative Officer (principal executive officer)

EX-99.CERT 2 nmzcertification2.htm CERTIFICATIONS CERTIFICATIONS I, Gifford R. Zimmerman, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under

July 17, 2013 SC 13D/A

NMZ / Nuveen Municipal High Income Opportunity Fund / BANK OF AMERICA CORP /DE/ - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND 13D/A Activist Investment

Schedule 13D CUSIP No. 670682608 CUSIP No. 670682707 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 Amendment No. 1 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (Name of Issuer) VARIABLE RATE MUNIFUND TERM PREFERRED SHARES (Title of Class of Securities) 670682608 670682707 (CUSIP Number) Bank of America Corporation Bank of America

May 17, 2013 425

Merger Prospectus - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

425 1 d453602d425.htm NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND Filed by Nuveen Municipal High Income Opportunity Fund pursuant to Rule 425 of the Securities Act of 1933, as amended and deemed filed pursuant to Rule 14a-6 under the Securities and Exchange Act of 1934, as amended Subject Companies: Nuveen Municipal High Income Opportunity Fund Commission File No. 811-21449 Nuveen Municipal High

May 17, 2013 425

Merger Prospectus - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND 2

Nuveen Municipal High Income Opportunity Fund 2 Filed by Nuveen Municipal High Income Opportunity Fund pursuant to Rule 425 of the Securities Act of 1933, as amended and deemed filed pursuant to Rule 14a-6 under the Securities and Exchange Act of 1934, as amended Subject Companies: Nuveen Municipal High Income Opportunity Fund Commission File No.

April 25, 2013 DEF 14A

- NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

DEF 14A 1 d510382ddef14a.htm NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential

April 19, 2013 CORRESP

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Nuveen Investments April 19, 2013 Ms. Christina DiAngelo U.S. Securities and Exchange Commission 450 5th Street, NW Washington, D.C. 20549 Re: Nuveen Closed-End and Open-End Funds - Sarbanes Oxley Review Follow-Up Discussion Dear Christina: This letter addresses your comments provided in a telephone discussion on February 13, 2013. This was a follow-up discussion to our December 11, 2012, correspo

April 18, 2013 CORRESP

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CORRESP 1 filename1.htm April 18, 2013 Securities and Exchange Commission Division of Investment Management 100 F Street, N.E. Washington, D.C. 20549 Attn: Kieran Brown Christina DiAngelo Re: Nuveen Municipal High Income Opportunity Fund (the “Registrant” or the “Acquiring Fund”); File No. 333-186450 To The Commission: On behalf of the Registrant, this letter is in response to the comments provide

April 10, 2013 CORRESP

-

April 10, 2013 Securities and Exchange Commission Division of Investment Management 100 F Street, N.

April 1, 2013 N-Q

Quarterly Schedule of Portfolio Holdings - NMZ

N-Q 1 nq2.htm NMZ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21449 Nuveen Municipal High Income Opportunity Fund (Exact name of registrant as specified in charter) Nuveen Investments 333 West Wacker Drive, Chicago, Illinois 60606 (Address o

April 1, 2013 EX-99.CERT

/s/ Gifford R. Zimmerman Gifford R. Zimmerman Chief Administrative Officer (principal executive officer)

EX-99.CERT 2 nmzcertification2.htm CERTIFICATIONS CERTIFICATIONS I, Gifford R. Zimmerman, certify that: 1. I have reviewed this report on Form N-Q of Nuveen Municipal High Income Opportunity Fund; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under

March 27, 2013 PRE 14A

- NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

PRE 14A 1 d510382dpre14a.htm NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: x Preliminary Proxy Statement ¨ Confidential

March 21, 2013 EX-99.6.C

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND RENEWAL OF INVESTMENT MANAGEMENT AGREEMENT

Renewal of Investment Management Agreement dated May 28, 2009 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND RENEWAL OF INVESTMENT MANAGEMENT AGREEMENT This Agreement made this 28th day of May 2009 by and between Nuveen Municipal High Income Opportunity Fund, a Massachusetts business trust (the “Fund”), and Nuveen Asset Management, a Delaware corporation (the “Adviser”); WHEREAS, the parties hereto

March 21, 2013 EX-99.16

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND POWER OF ATTORNEY

Powers of Attorney NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned, a trustee of the above-referenced organization, a Massachusetts business trust (the “Trust”), hereby constitutes and appoints KEVIN J.

March 21, 2013 CORRESP

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Nuveen Municipal High Income Opportunity Fund NATHANIEL SEGAL 312-609-7747 nsegal@vedderprice.

March 21, 2013 EX-99.12.A

[Form of Tax Opinion] , 2013 Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive Chicago, Illinois 60606 Nuveen Municipal High Income Opportunity Fund 2 333 West Wacker Drive Chicago, Illinois 60606

Form of Opinion and Consent of Vedder Price P.C. Exhibit 12.a [Form of Tax Opinion] , 2013 Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive Chicago, Illinois 60606 Nuveen Municipal High Income Opportunity Fund 2 333 West Wacker Drive Chicago, Illinois 60606 Re: Reorganization of Nuveen Municipal High Income Opportunity Fund 2 into Nuveen Municipal High Income Opportunity Fund La

March 21, 2013 EX-99.6.D

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND RENEWAL OF INVESTMENT MANAGEMENT AGREEMENT

Renewal of Investment Management Agreement dated May 26, 2010 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND RENEWAL OF INVESTMENT MANAGEMENT AGREEMENT This Agreement made this 26th day of May 2010 by and between Nuveen Municipal High Income Opportunity Fund, a Massachusetts business trust (the “Fund”), and Nuveen Asset Management, a Delaware corporation (the “Adviser”); WHEREAS, the parties hereto

March 21, 2013 EX-99.6.E

NUVEEN CLOSED-END FUNDS RENEWAL OF INVESTMENT MANAGEMENT AGREEMENTS

Renewal of Investment Management Agreement dated May 25, 2011 NUVEEN CLOSED-END FUNDS RENEWAL OF INVESTMENT MANAGEMENT AGREEMENTS This Agreement made this 25th day of May 2011 by and between the funds listed on Schedule A (the “Nuveen Closed-End Funds”), and Nuveen Fund Advisors, Inc.

March 21, 2013 EX-99.6.F

NUVEEN CLOSED-END FUNDS RENEWAL OF INVESTMENT MANAGEMENT AGREEMENTS

NUVEEN CLOSED-END FUNDS RENEWAL OF INVESTMENT MANAGEMENT AGREEMENTS This Agreement made this 23rd day of May 2012 by and between the funds listed on Schedule A (the “Nuveen Closed-End Funds”), and Nuveen Fund Advisors, Inc.

March 21, 2013 N-14 8C/A

- NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

Nuveen Municipal High Income Opportunity Fund As filed with the Securities and Exchange Commission on March 21, 2013 File No.

March 21, 2013 EX-99.6.H

NUVEEN CLOSED-END FUNDS NOTICE OF CONTINUANCE OF INVESTMENT SUB-ADVISORY AGREEMENT

Notice of Continuance of Investment Sub-Advisory Agreement NUVEEN CLOSED-END FUNDS NOTICE OF CONTINUANCE OF INVESTMENT SUB-ADVISORY AGREEMENT WHEREAS, Nuveen Fund Advisors, Inc.

March 21, 2013 EX-99.14

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Consent of Independent Auditor CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the reference to our firm under the captions “Experts”, “Appointment of the Independent Registered Public Accounting Firm” and “Financial Highlights” and to the use of our report dated December 27, 2012 for Nuveen Municipal High Income Opportunity Fund and Nuveen Municipal High Income Opportunity Fund 2 in the Registration Statement (Form N-14) and related Joint Proxy Statement/Prospectus and Statement of Additional Information of Nuveen Municipal High Income Opportunity Fund filed with the Securities and Exchange Commission in this Pre-Effective Amendment No.

March 21, 2013 CORRESP

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CORRESP 1 filename1.htm March 21, 2013 VIA EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, N.E. Washington, D.C. 20549 Re: Nuveen Municipal High Income Opportunity Fund Registration Statement on Form N-14 8C (File No. 333-186450) Ladies and Gentlemen: Pursuant to Rule 461 under the Securities Act of 1933, as amended, the undersigned hereby request that the

March 21, 2013 EX-99.12.B

, 2013 Nuveen Municipal High Income Opportunity Fund 2 333 West Wacker Drive Chicago, IL 60606 Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive Chicago, IL 60606

Form of Opinion and Consent of K&L Gates LLP Exhibit 12.b , 2013 Nuveen Municipal High Income Opportunity Fund 2 333 West Wacker Drive Chicago, IL 60606 Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive Chicago, IL 60606 Re: Variable Rate MuniFund Term Preferred Shares Issued in the Reorganization of Nuveen Municipal High Income Opportunity Fund 2 into Nuveen Municipal High Incom

March 21, 2013 COVER

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VEDDER PRICE P.C. 222 NORTH LASALLE STREET CHICAGO, ILLINOIS 60601 T: + 1 (312) 609 7500 F: + 1 (312) 609 5005 NATHANIEL SEGAL ATTORNEY AT LAW [email protected] CHICAGO — NEW YORK — WASHINGTON, DC — LONDON March 21, 2013 VIA EDGAR Securities and Exchange Commission 100 F Street N.E. Washington, D.C. 20549 Re: Nuveen Municipal High Income Opportunity Fund (the “Registrant”); File No. 811-21449

March 21, 2013 EX-99.11

March 21, 2013

Opinion and Consent of Counsel March 21, 2013 Vedder Price P.C. 222 North LaSalle Street Chicago, Illinois 60601 Nuveen Municipal High Income Opportunity Fund 333 West Wacker Drive Chicago, IL 60606 RE: Nuveen Municipal High Income Opportunity Fund Ladies and Gentlemen: We have acted as special Massachusetts counsel to Nuveen Municipal High Income Opportunity Fund, a Massachusetts business trust (

March 21, 2013 EX-99.2

BY-LAWS NUVEEN LEVERAGED MUNICIPAL CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS (Amended and Restated as of November 18, 2009) ARTICLE I DECLARATION OF TRUST AND OFFICES

BY-LAWS OF NUVEEN LEVERAGED MUNICIPAL CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS (Amended and Restated as of November 18, 2009) ARTICLE I DECLARATION OF TRUST AND OFFICES Section 1.

March 21, 2013 EX-99.8.B

NUVEEN OPEN-END AND CLOSED-END FUNDS DEFERRED COMPENSATION PLAN FOR INDEPENDENT DIRECTORS AND TRUSTEES (As Amended and Restated Effective January 1, 2013)

Deferred Compensation Plan Exhibit 8.b NUVEEN OPEN-END AND CLOSED-END FUNDS DEFERRED COMPENSATION PLAN FOR INDEPENDENT DIRECTORS AND TRUSTEES (As Amended and Restated Effective January 1, 2013) December 2008 TABLE OF CONTENTS SECTION 1 PURPOSE OF PLAN; RESTATEMENT EFFECTIVE DATE 4 1.1 Purpose of Plan 4 1.2 Effective Date 4 1.3 Grandfather Rule for Pre-2005 Accounts 4 SECTION 2 DEFINITION OF TERMS

March 21, 2013 EX-99.6.B

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND RENEWAL OF INVESTMENT MANAGEMENT AGREEMENT

Renewal of Investment Management Agreement dated July 31, 2008 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND RENEWAL OF INVESTMENT MANAGEMENT AGREEMENT This Agreement made this 31st day of July 2008 by and between Nuveen Municipal High Income Opportunity Fund, a Massachusetts business trust (the “Fund”), and Nuveen Asset Management, a Delaware corporation (the “Adviser”), to be effective August 1, 2008.

March 11, 2013 EX-99.H.5

Distribution Agreement Relating to At-the-Market offerings between the Registrant and Nuveen Securities, LLC dated March 4, 2013 is incorporated by reference herein to Exhibit (h)(5) to Post-Effective Amendment No. 7 to the Registrant’s Registration Statement on Form N-2 (File No. 333-187032), as filed with the SEC via EDGAR Accession No. 0001193125-13-101032 on March 11, 2013.

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND 333 West Wacker Drive Chicago, Illinois 60606 March 4, 2013 Nuveen Securities, LLC 333 West Wacker Drive Chicago, Illinois 60606 Re: Distribution Agreement Relating to At-the-Market Offerings Ladies and Gentlemen: Nuveen Municipal High Income Opportunity Fund is a Massachusetts business trust operating as a closed-end management investment company (hereinafter referred to as the “Fund”).

March 11, 2013 EX-99.H.6

Dealer Agreement Relating to At-the-Market offerings between Nuveen Securities, LLC and UBS Securities, LLC dated March 4, 2013 is incorporated herein by reference to Exhibit (h)(6) to Post-Effective Amendment No. 1 to the Registrant’s Registration Statement on Form N-2 (File No. 333-187032), as filed with the SEC via EDGAR Accession No. 0001193125-13-101032 on March 11, 2013.

EX-99.H.6 3 d499644dex99h6.htm DEARLER AGREEMENT REGARDING TO AT-THE-MARKET OFFERINGS DEALER AGREEMENT Nuveen Securities, LLC 333 West Wacker Drive Chicago, Illinois 60606 March 4, 2013 UBS Securities LLC 299 Park Avenue New York, New York 10171 RE: At-the-Market Offerings by Nuveen Municipal High Income Opportunity Fund Ladies and Gentlemen: From time to time Nuveen Securities, LLC (the “Manager”

March 11, 2013 POS EX

- NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

Nuveen Municipal High Income Opportunity Fund As filed with the U.S. Securities and Exchange Commission on March 11, 2013 1933 Act File No. 333-187032 1940 Act File No. 811-21449 U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-2 (Check appropriate box or boxes) x REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Pre-Effective Amendment No. x Post-Effective Amendment No.

February 27, 2013 COVER

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COVER 7 filename7.htm Bingham McCutchen LLP 2020 K Street NW Washington, DC 20006 Tel: 202.373.6000 Fax: 202.373.6001 www.bingham.com February 27, 2013 VIA EDGAR U.S. Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: Nuveen Municipal High Income Opportunity Fund (File Nos. 333-161462 and 811-21449) Dear Sir or Madam: On behalf of our client, Nuveen Municipal High Inc

February 27, 2013 CORRESP

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CORRESP 1 filename1.htm Bingham McCutchen LLP 2020 K Street NW Washington, DC 200006 Tel: 202.373.6000 Fax: 202.373.6001 www.bingham.com Thomas S. Harman Direct Phone: +1.202.373.6725 Direct Fax: +1.202.373.6001 [email protected] February 27, 2013 Christina DiAngelo Division of Investment Management U.S. Securities and Exchange Commission 100 F Street, NE Washington, DC 20549 Re: Nuveen Mu

February 27, 2013 EX-99.N

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

EX-99.N 3 d466939dex99n.htm CONSENT OF ERNST & YOUNG LLP Exhibit n CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the reference to our firm under the captions “Financial Highlights” and “Independent Registered Public Accounting Firm” and to the incorporation by reference of our report dated December 27, 2012 in the Registration Statement (Form N-2) and related Prospectus an

February 27, 2013 POS 8C

- NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

POS 8C 1 d466939dpos8c.htm NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND As filed with the U.S. Securities and Exchange Commission on February 27, 2013 1933 Act File No. 333-161462 1940 Act File No. 811-21449 U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-2 (Check appropriate box or boxes) x REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Pre-Effective Amendment No.

February 27, 2013 CORRESP

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Bingham McCutchen LLP 2020 K Street NW Washington, DC 200006 Tel: 202.373.6000 Fax: 202.373.6001 www.bingham.com Thomas S. Harman Direct Phone: +1.202.373.6725 Direct Fax: +1.202.373.6001 [email protected] February 27, 2013 Mr. Kieran G. Brown Senior Counsel Division of Investment Management U.S. Securities and Exchange Commission 100 F Street, NE Washington, DC 20549 Re: Nuveen Municipal

February 27, 2013 EX-99.L

Bingham McCutchen LLP

Opinion and Consent of Bingham McCutchen LLP Exhibit l Bingham McCutchen LLP 2020 K Street NW Washington, DC 20006 Tel: 202.

February 27, 2013 CORRESP

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CORRESP 1 filename1.htm Nuveen Securities 333 West Wacker Drive Chicago, IL 60606 P 312 917 7700 www.nuveen.com February 27, 2013 VIA EDGAR U.S. Securities and Exchange Commission 100 F Street, NE Washington, DC 20549 Attn: Mr. Kieran Brown Re: Request for Acceleration of the Effective Date of Nuveen Municipal High Income Opportunity Fund (the “Fund”) Post-Effective Amendment No. 9 Under the Secur

February 4, 2013 EX-99.6.H

NUVEEN CLOSED-END FUNDS NOTICE OF CONTINUANCE OF INVESTMENT SUB-ADVISORY AGREEMENT

Notice of Continuance of Investment Sub-Advisory Agreement NUVEEN CLOSED-END FUNDS NOTICE OF CONTINUANCE OF INVESTMENT SUB-ADVISORY AGREEMENT WHEREAS, Nuveen Fund Advisors, Inc.

February 4, 2013 EX-99.14

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Consent of Independent Auditor CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the reference to our firm under the captions “Experts” and “Financial Highlights” and to the use of our report dated December 27, 2012 for Nuveen Municipal High Income Opportunity Fund and Nuveen Municipal High Income Opportunity Fund 2 in the Registration Statement (Form N-14) and related Joint Proxy Statement/Prospectus and Statement of Additional Information of Nuveen Municipal High Income Opportunity Fund filed with the Securities and Exchange Commission in this initial filing of the Registration Statement under the Securities Act of 1933.

February 4, 2013 EX-99.6.F

NUVEEN CLOSED-END FUNDS RENEWAL OF INVESTMENT MANAGEMENT AGREEMENTS

Renewal of Investment Management Agreement dated May 23, 2012 NUVEEN CLOSED-END FUNDS RENEWAL OF INVESTMENT MANAGEMENT AGREEMENTS This Agreement made this 23rd day of May 2012 by and between the funds listed on Schedule A (the “Nuveen Closed-End Funds”), and Nuveen Fund Advisors, Inc.

February 4, 2013 N-14 8C

- NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

Nuveen Municipal High Income Opportunity Fund As filed with the Securities and Exchange Commission on February 4, 2013 File No.

February 4, 2013 EX-99.6.B

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND RENEWAL OF INVESTMENT MANAGEMENT AGREEMENT

Renewal of Investment Management Agreement dated July 31, 2008 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND RENEWAL OF INVESTMENT MANAGEMENT AGREEMENT This Agreement made this 31st day of July 2008 by and between Nuveen Municipal High Income Opportunity Fund, a Massachusetts business trust (the “Fund”), and Nuveen Asset Management, a Delaware corporation (the “Adviser”), to be effective August 1, 2008.

February 4, 2013 COVER

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Letter to SEC VEDDER PRICE P.C. 222 NORTH LASALLE STREET CHICAGO, ILLINOIS 60601 T: +1 (312) 609 7500 F: +1 (312) 609 5005 NATHANIEL SEGAL ATTORNEY AT LAW* [email protected] CHICAGO — NEW YORK — WASHINGTON, DC — LONDON February 4, 2013 VIA EDGAR Securities and Exchange Commission 100 F Street N.E. Washington, D.C. 20549 Re: Nuveen Municipal High Income Opportunity Fund (the “Registrant”); Fil

February 4, 2013 EX-99.6.D

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND RENEWAL OF INVESTMENT MANAGEMENT AGREEMENT

Renewal of Investment Management Agreement dated May 26, 2010 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND RENEWAL OF INVESTMENT MANAGEMENT AGREEMENT This Agreement made this 26th day of May 2010 by and between Nuveen Municipal High Income Opportunity Fund, a Massachusetts business trust (the “Fund”), and Nuveen Asset Management, a Delaware corporation (the “Adviser”); WHEREAS, the parties hereto

February 4, 2013 EX-99.6.E

NUVEEN CLOSED-END FUNDS RENEWAL OF INVESTMENT MANAGEMENT AGREEMENTS

Renewal of Investment Management Agreement dated May 25, 2011 NUVEEN CLOSED-END FUNDS RENEWAL OF INVESTMENT MANAGEMENT AGREEMENTS This Agreement made this 25th day of May 2011 by and between the funds listed on Schedule A (the “Nuveen Closed-End Funds”), and Nuveen Fund Advisors, Inc.

February 4, 2013 EX-99.16

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND POWER OF ATTORNEY

Powers of Attorney NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned, a trustee of the above-referenced organization, a Massachusetts business trust (the “Trust”), hereby constitutes and appoints KEVIN J.

February 4, 2013 EX-99.6.C

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND RENEWAL OF INVESTMENT MANAGEMENT AGREEMENT

Renewal of Investment Management Agreement dated May 28, 2009 NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND RENEWAL OF INVESTMENT MANAGEMENT AGREEMENT This Agreement made this 28th day of May 2009 by and between Nuveen Municipal High Income Opportunity Fund, a Massachusetts business trust (the “Fund”), and Nuveen Asset Management, a Delaware corporation (the “Adviser”); WHEREAS, the parties hereto

February 4, 2013 EX-99.2

BY-LAWS NUVEEN LEVERAGED MUNICIPAL CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS (Amended and Restated as of November 18, 2009) ARTICLE I DECLARATION OF TRUST AND OFFICES

By-Laws of Registrant BY-LAWS OF NUVEEN LEVERAGED MUNICIPAL CLOSED-END FUNDS ORGANIZED AS MASSACHUSETTS BUSINESS TRUSTS (Amended and Restated as of November 18, 2009) ARTICLE I DECLARATION OF TRUST AND OFFICES Section 1.

January 18, 2013 EX-99.S

NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY

Powers of Attorney NUVEEN CLOSED-END FUNDS POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned, a director/trustee of the above-referenced organizations listed on Appendix A, hereby constitutes and appoints KEVIN J.

January 18, 2013 EX-99.K.2

SCHEDULE A NUVEEN CLOSED-END FUNDS Dated as of: May 25, 2011

Schedule A to the Transfer Agency and Service Agreement Exhibit k.2 SCHEDULE A NUVEEN CLOSED-END FUNDS Dated as of: May 25, 2011 Nuveen Arizona Dividend Advantage Municipal Fund * Nuveen Arizona Dividend Advantage Municipal Fund 2 * Nuveen Arizona Dividend Advantage Municipal Fund 3* Nuveen Arizona Premium Income Municipal Fund, Inc. + Nuveen Build America Bond Fund* Nuveen Build America Bond Oppo

January 18, 2013 COVER

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COVER 13 filename13.htm Bingham McCutchen LLP 2020 K Street NW Washington, DC 20006 Tel: 202.373.6000 Fax: 202.373.6001 www.bingham.com January 18, 2013 VIA EDGAR U.S. Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: Nuveen Municipal High Income Opportunity Fund (File Nos. 333-161462 and 811-21449) Dear Sir or Madam: On behalf of our client, Nuveen Municipal High In

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