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Pioneer Municipal High Income Opportunities Fund (MIO) SEC Filings & 10K Form

Pioneer Municipal High Income Opportunities Fund logo
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Recent Pioneer Municipal High Income Opportunities Fund SEC Filings

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DateFilerForm TypeView
07/09/2025
12:53 PM		Pioneer Diversified High Income Fund, Inc. (Filer)
Pioneer Floating Rate Fund, Inc. (Filer)
PIONEER HIGH INCOME FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME FUND, INC. (Filer)
Pioneer Municipal High Income Opportunities Fund (Filer)
Form DEFA14A
06/27/2025
7:43 AM		Pioneer Municipal High Income Opportunities Fund (Filer)
Form NPORT-P
Monthly Portfolio Investments Report on Form NPORT
06/10/2025
3:45 PM		Pioneer Diversified High Income Fund, Inc. (Filer)
Pioneer Floating Rate Fund, Inc. (Filer)
PIONEER HIGH INCOME FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME FUND, INC. (Filer)
Pioneer Municipal High Income Opportunities Fund (Filer)
Form DEF 14A
05/20/2025
4:07 PM		Pioneer Diversified High Income Fund, Inc. (Filer)
Pioneer Floating Rate Fund, Inc. (Filer)
PIONEER HIGH INCOME FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME FUND, INC. (Filer)
Pioneer Municipal High Income Opportunities Fund (Filer)
Form PRE 14A
05/20/2025
8:24 AM		PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME FUND, INC. (Filer)
Pioneer Municipal High Income Opportunities Fund (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
05/08/2025
4:24 PM		Pioneer Diversified High Income Fund, Inc. (Filer)
Pioneer Floating Rate Fund, Inc. (Filer)
PIONEER HIGH INCOME FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME FUND, INC. (Filer)
Pioneer Municipal High Income Opportunities Fund (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
05/08/2025
9:06 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
04/24/2025
10:56 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
04/22/2025
8:52 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
04/14/2025
11:48 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
04/10/2025
9:46 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
04/08/2025
12:05 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
04/04/2025
2:14 PM		Brown David Craig (Reporting)
Pioneer Municipal High Income Opportunities Fund (Issuer)
Form 3
Initial statement of beneficial ownership of securities  
03/25/2025
3:24 PM		PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME FUND, INC. (Filer)
Pioneer Municipal High Income Opportunities Fund (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
03/25/2025
12:38 PM		Pioneer Municipal High Income Opportunities Fund (Filer)
Form NPORT-P
Monthly Portfolio Investments Report on Form NPORT
02/24/2025
6:00 AM		Pioneer Municipal High Income Opportunities Fund (Subject)
Saba Capital Management, L.P. (Filed by)
Form DFAN14A
02/14/2025
11:52 AM		Pioneer Municipal High Income Opportunities Fund (Subject)
RIVERNORTH CAPITAL MANAGEMENT, LLC (Filed by)
Form SCHEDULE 13G
02/04/2025
9:35 AM		Pioneer Municipal High Income Opportunities Fund (Subject)
Saba Capital Management, L.P. (Filed by)
Form SCHEDULE 13D/A
02/03/2025
2:03 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
01/31/2025
4:24 PM		Pioneer Municipal High Income Opportunities Fund (Subject)
Saba Capital Management, L.P. (Filed by)
Form PRRN14A
01/29/2025
4:19 PM		Pioneer Municipal High Income Opportunities Fund (Subject)
Form PREC14A
01/29/2025
12:51 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
01/27/2025
11:18 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
01/24/2025
4:15 PM		Pioneer Municipal High Income Opportunities Fund (Subject)
Saba Capital Management, L.P. (Filed by)
Form PREC14A
01/23/2025
9:52 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
01/21/2025
9:33 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
01/14/2025
4:31 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
01/10/2025
11:14 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
01/06/2025
10:31 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
12/31/2024
10:53 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
12/27/2024
12:45 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
12/23/2024
8:07 PM		Pioneer Municipal High Income Opportunities Fund (Subject)
Saba Capital Management, L.P. (Filed by)
Form SCHEDULE 13D/A
12/23/2024
9:16 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
12/19/2024
6:45 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
12/19/2024
1:29 PM		Pioneer Municipal High Income Opportunities Fund (Filer)
Form NPORT-P
Monthly Portfolio Investments Report on Form NPORT
12/16/2024
9:30 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
12/12/2024
1:59 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
11/29/2024
11:06 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
11/26/2024
11:03 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
11/25/2024
5:42 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
11/21/2024
12:43 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Form 4
Statement of changes in beneficial ownership of securities  
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11/18/2024
10:57 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
11/14/2024
11:37 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
11/12/2024
10:17 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
11/05/2024
11:24 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
11/04/2024
10:21 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
10/31/2024
11:04 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
10/22/2024
4:19 PM		Pioneer Municipal High Income Opportunities Fund (Filer)
Form DEFA14A
09/27/2024
8:25 AM		Pioneer Diversified High Income Fund, Inc. (Filer)
Pioneer Floating Rate Fund, Inc. (Filer)
PIONEER HIGH INCOME FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME FUND, INC. (Filer)
Pioneer Municipal High Income Opportunities Fund (Filer)
Form DEFA14A
09/23/2024
11:59 AM		Pioneer Municipal High Income Opportunities Fund (Filer)
Form NPORT-P
Monthly Portfolio Investments Report on Form NPORT
09/10/2024
9:28 AM		PIONEER ASSET ALLOCATION TRUST (Filer)
PIONEER BOND FUND /DE/ (Filer)
PIONEER CORE TRUST I (Filer)
Pioneer Diversified High Income Fund, Inc. (Filer)
PIONEER EQUITY INCOME FUND (Filer)
Pioneer Floating Rate Fund, Inc. (Filer)
PIONEER FUND /MA/ (Filer)
PIONEER HIGH INCOME FUND, INC. (Filer)
PIONEER HIGH YIELD FUND (Filer)
Pioneer ILS Bridge Fund (Filer)
Pioneer ILS Interval Fund (Filer)
PIONEER MID CAP VALUE FUND (Filer)
PIONEER MONEY MARKET TRUST (Filer)
PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME FUND, INC. (Filer)
Pioneer Municipal High Income Opportunities Fund (Filer)
PIONEER SERIES TRUST II (Filer)
Pioneer Series Trust III (Filer)
Pioneer Series Trust IV (Filer)
Pioneer Series Trust V (Filer)
Pioneer Series Trust VI (Filer)
PIONEER SERIES TRUST VII (Filer)
PIONEER SERIES TRUST VIII (Filer)
PIONEER SERIES TRUST X (Filer)
PIONEER SERIES TRUST XI (Filer)
PIONEER SERIES TRUST XII (Filer)
PIONEER SERIES TRUST XIV (Filer)
PIONEER SHORT TERM INCOME FUND (Filer)
PIONEER VARIABLE CONTRACTS TRUST /MA/ (Filer)
Form 40-17G
08/29/2024
9:56 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
08/28/2024
8:37 AM		Pioneer Municipal High Income Opportunities Fund (Filer)
Form N-PX
Annual Report of Proxy Voting Record of Registered Management Investment Company  
08/27/2024
8:53 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
08/23/2024
6:32 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
08/22/2024
1:40 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
08/22/2024
10:08 AM		PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME FUND, INC. (Filer)
Pioneer Municipal High Income Opportunities Fund (Filer)
Form DEF 14A
08/21/2024
9:36 AM		Pioneer Municipal High Income Opportunities Fund (Subject)
Saba Capital Management, L.P. (Filed by)
Form SC 13D/A
08/19/2024
3:08 PM		Pioneer Municipal High Income Opportunities Fund (Subject)
Form DEFC14A
08/15/2024
10:17 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
08/13/2024
10:41 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
08/09/2024
2:23 PM		Pioneer Municipal High Income Opportunities Fund (Subject)
Form PREC14A
08/08/2024
10:26 AM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
08/06/2024
3:58 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
07/19/2024
3:27 PM		Pioneer Diversified High Income Fund, Inc. (Filer)
Pioneer Floating Rate Fund, Inc. (Filer)
PIONEER HIGH INCOME FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC. (Filer)
PIONEER MUNICIPAL HIGH INCOME FUND, INC. (Filer)
Pioneer Municipal High Income Opportunities Fund (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/15/2024
4:20 PM		Pioneer Municipal High Income Opportunities Fund (Issuer)
Saba Capital Management, L.P. (Reporting)
Weinstein Boaz (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
(Data available from 1/1/2016 forward)


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This page (NYSE:MIO) was last updated on 7/13/2025 by MarketBeat.com Staff
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