MIO / Pioneer Municipal High Income Opportunities Fund, Inc. - SEC फाइलिंग, वार्षिक रिपोर्ट, प्रॉक्सी स्टेटमेंट

पायनियर म्युनिसिपल हाई इनकम अपॉच्र्युनिटीज़ फंड, इंक.
US ˙ NYSE ˙ US7237601049
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LEI 5493005BKX8X756MKL25
CIK 1864290
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 Pioneer Municipal High Income Opportunities Fund, Inc.
SEC Filings (Chronological Order)
यह पृष्ठ SEC फाइलिंग की एक पूरी, कालानुक्रमिक सूची प्रदान करता है, ओनरशिप फाइलिंग को छोड़कर, जो हम अन्यत्र प्रदान करते हैं।
August 27, 2025 EX-99.25

EX-99.25

NOTIFICATION OF THE REMOVAL FROM LISTING AND REGISTRATION OF THE STATED SECURITIES The New York Stock Exchange hereby notifies the SEC of its intention to remove the entire class of the stated securities from listing and registration on the Exchange at the opening of business on September 08, 2025, pursuant to the provisions of Rule 12d2-2 (a).

July 9, 2025 DEFA14A

UNITED STATES

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 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)) [ ] Definitive P

June 10, 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

DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 20, 2025 PRE 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

CEF Funds Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 20, 2025 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): May 20, 2025 PIONEER MUNICIPAL HI

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): May 20, 2025 PIONEER MUNICIPAL HIGH INCOME FUND, INC. (Registrant) PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC. PIONEER MUNICIPAL HIGH INCOME OPPORTUNITIES FUND, INC. (Co-Re

May 9, 2025 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): May 8, 2025 PIONEER FLOATING RATE

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): May 8, 2025 PIONEER FLOATING RATE FUND, INC. (Registrant) PIONEER DIVERSIFIED HIGH INCOME FUND, INC. PIONEER HIGH INCOME FUND, INC. PIONEER MUNICIPAL HIGH INCOME FUND, INC. PIONEE

May 9, 2025 EX-99.1

PIONEER FLOATING RATE FUND, INC. AMENDED AND RESTATED BYLAWS ARTICLE I

EX-99.1 PIONEER FLOATING RATE FUND, INC. AMENDED AND RESTATED BYLAWS ARTICLE I OFFICES Section 1. PRINCIPAL OFFICE. The principal office of the Corporation in the State of Maryland shall be located at such place as the Board of Directors may designate. Section 2. ADDITIONAL OFFICES. The Corporation may have additional offices, including a principal executive office, at such places as the Board of

May 8, 2025 8-K

Financial Statements and Exhibits, Other Events

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): May 8, 2025 PIONEER FLOATING RATE FUND, INC. (Registrant) PIONEER DIVERSIFIED HIGH INCOME FUND, INC. PIONEER HIGH INCOME FUND, INC. PIONEER MUNICIPAL HIGH INCOME FUND, INC. PIONEER MU

April 2, 2025 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): April 1, 2025 PIONEER FLOATING RATE FUND, INC. (Registrant) PIONEER DIVERSIFIED HIGH INCOME FUND, INC. PIONEER HIGH INCOME FUND, INC. PIONEER MUNICIPAL HIGH INCOME FUND, INC. PIONEER

March 26, 2025 DEFA14A

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

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 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)) ☐ Definitive Pro

March 25, 2025 EX-99.1

Pioneer Municipal High Income Advantage Fund, Inc. (MAV) Pioneer Municipal High Income Fund, Inc. (MHI) Pioneer Municipal High Income Opportunities Fund, Inc. (MIO) (each a “Fund” and together, the “Funds”) PIONEER CLOSED-END FUNDS ANNOUNCE POSTPONEM

Exhibit 99.1 Pioneer Municipal High Income Advantage Fund, Inc. (MAV) Pioneer Municipal High Income Fund, Inc. (MHI) Pioneer Municipal High Income Opportunities Fund, Inc. (MIO) (each a “Fund” and together, the “Funds”) PIONEER CLOSED-END FUNDS ANNOUNCE POSTPONEMENT OF MARCH 26, 2025 SPECIAL MEETING OF STOCKHOLDERS BOSTON, MA – (BUSINESS WIRE) – March 25, 2025. Each of the Funds listed above annou

March 25, 2025 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 25, 2025 PIONEER MUNICIPAL HIGH INCOME FUND, INC. (Registrant) PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC. PIONEER MUNICIPAL HIGH INCOME OPPORTUNITIES FUND, INC. (Co-Regi

February 24, 2025 DFAN14A

RULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

RULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 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)) ☐ Definitive Proxy Statement ☒ Definitive Additional Materials ☐ Soliciting Material Under Rule 14a-12 Pioneer Municipal High Income Opportunities Fund (Name of Registrant as Specified In Its Charter) Saba Capital Management, L.

February 11, 2025 DEFC14A

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

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 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] Definiti

February 10, 2025 DEFC14A

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ¨ Filed by a Party other than the Registrant þ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) þ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Under Rule 14a-12 Pioneer Municipal High Income Opportunities Fund, Inc.

February 10, 2025 CORRESP

Morgan, Lewis & Bockius LLP One Federal Street Boston, MA 02110 February 10, 2025

Morgan, Lewis & Bockius LLP One Federal Street Boston, MA 02110 February 10, 2025 VIA EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, NE Washington, D.

February 4, 2025 EX-99.6

Schedule A

EX-99.6 3 exhibit6.htm EXHIBIT 6 EXHIBIT 6 Schedule A This Schedule sets forth information with respect to each purchase and sale of Common Shares which were effectuated by Saba Capital from the filing of the Schedule 13D/A on 1/28/25 to 1/31/25, the date of the event which required filing of this Schedule 13D/A. All transactions were effectuated in the open market through a broker. Trade Date Buy

January 31, 2025 PRRN14A

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. 1)

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

January 29, 2025 PREC14A

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

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 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 Only (as permitted by Rule 14a-6(e)(2)) [  ] Definitiv

January 28, 2025 EX-4

Schedule A

EX-4 2 exhibit4.htm EXHIBIT 4 EXHIBIT 4 Schedule A This Schedule sets forth information with respect to each purchase and sale of Common Shares which were effectuated by Saba Capital from the filing of the Schedule 13D/A on 12/23/24 to 1/24/25, the date of the event which required filing of this Schedule 13D/A. All transactions were effectuated in the open market through a broker. Trade Date Buy/S

January 28, 2025 EX-3

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

EX-3 3 exhibit3.htm EXHIBIT 3 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant o Filed by a Party other than the Registrant þ Check the appropriate box: þ Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Definitive Proxy Statement o Definitive Additional Materials o S

January 24, 2025 PREC14A

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant o Filed by a Party other than the Registrant þ Check the appropriate box: þ Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Definitive Proxy Statement o Definitive Additional Materials o Soliciting Material Under Rule 14a-12 Pioneer Municipal High Income Opportunities Fund, Inc.

December 23, 2024 EX-2

Schedule A

EXHIBIT 2 Schedule A This Schedule sets forth information with respect to each purchase and sale of Common Shares which were effectuated by Saba Capital during the past sixty days.

October 22, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 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)) ☐ Defini

August 22, 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

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 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] Definitive P

August 21, 2024 SC 13D/A

MIO / Pioneer Municipal High Income Opportunities Fund, Inc. / Saba Capital Management, L.P. - FORM SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 2)* Pioneer Municipal High Income Opportunities Fund, Inc (Name of Issuer) Common Shares, $0.001 par value (Title of Class of Securities) 723760104 (CUSIP Number) Saba Capital Management, L.P. 405 Lexington Avenue 58th Floor New York, NY 10174 Attention: M

August 19, 2024 DEFC14A

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

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 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] Definitive P

August 15, 2024 CORRESP

Morgan, Lewis & Bockius LLP One Federal Street Boston, MA 02110

Morgan, Lewis & Bockius LLP One Federal Street Boston, MA 02110 August 15, 2024 VIA EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, NE Washington, D.

August 9, 2024 PREC14A

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

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 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 Only (as permitted by Rule 14a-6(e)(2)) [ ] Definitive P

July 19, 2024 EX-99.1

AMUNDI US ANNOUNCES PROPOSED TRANSACTION RELATING TO PIONEER CLOSED-END FUNDS

Exhibit 99.1 AMUNDI US ANNOUNCES PROPOSED TRANSACTION RELATING TO PIONEER CLOSED-END FUNDS FOR IMMEDIATE RELEASE July 19, 2024 Boston, Massachusetts— Amundi US today announced a proposed transaction affecting the following Pioneer closed-end funds: • Pioneer Diversified High Income Fund, Inc. (NYSEAMER: HNW) • Pioneer Floating Rate Fund, Inc. (NYSE: PHD) • Pioneer High Income Fund, Inc. (NYSE: PHT

July 19, 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): July 19, 2024 PIONEER FLOATING RATE FUND, INC. (Registrant) PIONEER DIVERSIFIED HIGH INCOME FUND, INC. PIONEER HIGH INCOME FUND, INC. PIONEER MUNICIPAL HIGH INCOME FUND, INC. PIONEER

April 1, 2024 SC 13D/A

MIO / Pioneer Municipal High Income Opportunities Fund, Inc. / Saba Capital Management, L.P. - FORM SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Pioneer Municipal High Income Opportunities Fund, Inc (Name of Issuer) Common Shares, $0.001 par value (Title of Class of Securities) 723760104 (CUSIP Number) Saba Capital Management, L.P. 405 Lexington Avenue 58th Floor New York, NY 10174 Attention: M

January 5, 2024 SC 13D

MIO / Pioneer Municipal High Income Opportunities Fund, Inc. / Saba Capital Management, L.P. - FORM SC 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. )* Pioneer Municipal High Income Opportunities Fund, Inc (Name of Issuer) Common Shares, $0.001 par value (Title of Class of Securities) 723760104 (CUSIP Number) Saba Capital Management, L.P. 405 Lexington Avenue 58th Floor New York, NY 10174 Attention: Mich

January 5, 2024 EX-1

JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)

EXHIBIT 1 JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k) The undersigned acknowledge and agree that the foregoing statement on Schedule 13D is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13D shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements.

July 26, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 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|

February 14, 2023 SC 13G/A

MIO / Pioneer Municipal High Income Opportunities Fund, Inc. / Saba Capital Management, L.P. - FORM SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No.1)* Pioneer Municipal High Income Opportunities Fund, Inc. (Name of Issuer) Common Stock, $0.001 par value (Title of Class of Securities) 723760104 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Statement) Check the appropriat

February 13, 2023 SC 13G

MIO / Pioneer Municipal High Income Opportunities Fund, Inc. / SIT INVESTMENT ASSOCIATES INC Passive Investment

SC 13G 1 13GInitialMIO2-13-23.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 Pioneer Municipal High Income Opportunities Fund, Inc. (MIO) - (Name of Issuer) Common Stock - (Title of Class of Securities) 723760104 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the

November 22, 2022 SC 13G

MIO / Pioneer Municipal High Income Opportunities Fund, Inc. / Saba Capital Management, L.P. - FORM SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Pioneer Municipal High Income Opportunities Fund, Inc. (Name of Issuer) Common Stock, $0.001 par value (Title of Class of Securities) 723760104 (CUSIP Number) November 14, 2022 (Date of Event which Requires Filing of this Statement) Check the appropriate

August 6, 2021 424B1

15,000,000 Shares Pioneer Municipal High Income Opportunities Fund, Inc. Common Stock $20.00 Per Share

424B1 1 d214228d424b1.htm PIONEER MUNICIPAL HIGH INCOME OPPORTUNITIES FUND, INC. Filed Pursuant to Rule 424(b)(1) Registration File No.: 333-256506 PROSPECTUS 15,000,000 Shares Pioneer Municipal High Income Opportunities Fund, Inc. Common Stock $20.00 Per Share Investment Objectives. Pioneer Municipal High Income Opportunities Fund, Inc. (the “Fund”) is a newly organized, diversified, closed-end m

August 3, 2021 CORRESP

August 3, 2021

Morgan Stanley August 3, 2021 OVERNIGHT DELIVERY AND EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, N.

August 3, 2021 CORRESP

Pioneer Municipal High Income Opportunities Fund, Inc. 60 State Street Boston, Massachusetts 02110

Pioneer Municipal High Income Opportunities Fund, Inc. 60 State Street Boston, Massachusetts 02110 August 3, 2021 VIA EDGAR United States Securities and Exchange Commission Division of Investment Management 100 F Street, NE Washington, D.C. 20549 Re: Pioneer Municipal High Income Opportunities Fund, Inc. Registration Statement on Form N-2 (File Nos. 333-256506; 811-23699) Ladies and Gentlemen: Pur

August 3, 2021 8-A12B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 Form 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 PIONEER MUNICIPAL HIGH INCOME OPPORTUNITIES FUN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 Form 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 PIONEER MUNICIPAL HIGH INCOME OPPORTUNITIES FUND, INC.

July 23, 2021 CORRESP

MORGAN, LEWIS & BOCKIUS LLP 1111 PENNSYLVANIA AVENUE, NW WASHINGTON, DC 20004 July 23, 2021

CORRESP 1 filename1.htm MORGAN, LEWIS & BOCKIUS LLP 1111 PENNSYLVANIA AVENUE, NW WASHINGTON, DC 20004 July 23, 2021 VIA EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, NE Washington, D.C. 20549 Re: Pioneer Municipal High Income Opportunities Fund, Inc. File Nos. 333-256506 and 811-23699 Ladies and Gentlemen: This letter responds to comments we received from

July 13, 2021 CORRESP

MORGAN, LEWIS & BOCKIUS LLP ONE FEDERAL STREET BOSTON, MASSACHUSETTS 02110 July 13, 2021

MORGAN, LEWIS & BOCKIUS LLP ONE FEDERAL STREET BOSTON, MASSACHUSETTS 02110 July 13, 2021 VIA EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, NE Washington, D.

May 26, 2021 N-8A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form N-8A NOTIFICATION OF REGISTRATION FILED PURSUANT TO SECTION 8(a) OF THE INVESTMENT COMPANY ACT OF 1940

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form N-8A NOTIFICATION OF REGISTRATION FILED PURSUANT TO SECTION 8(a) OF THE INVESTMENT COMPANY ACT OF 1940 The undersigned investment company hereby notifies the Securities and Exchange Commission that it registers under and pursuant to the provisions of Section 8(a) of the Investment Company Act of 1940 and in connection wit

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