As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of Pioneer Municipal High Income Fund, Inc. The largest reported stake is Sit Investment Associates, Inc.'s, at 11.5%. 6 filings are on record since August 5, 2025 (Schedule 13G/A, August 5, 2025).
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Key facts
- · Holder: Almitas Capital LLC · Percent: 0% · SCHEDULE 13G
- · Holder: Saba Capital Management, L.P. · Percent: 0% · SCHEDULE 13D/A
- · Holder: Bank Of America Corp · Percent: 0% · SCHEDULE 13D/A
- · Holder: Almitas Capital LLC · Percent: 5.2% · SCHEDULE 13G
- · Holder: Rivernorth Capital Management, LLC · Percent: 4.41% · SCHEDULE 13G/A
Pioneer Municipal High Income Fund, Inc. has 6 Schedule 13D or 13G filings on record since 2025-08-05. 1 holder's latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Sit Investment Associates, Inc. | 11.5% | 2,614,270 | SCHEDULE 13G/A, 2025-08-05 | 2025-07-31 |
| Rivernorth Capital Management, LLC | 4.41% | 1,003,600 | SCHEDULE 13G/A, 2025-08-14 | 2025-06-30 |
| Almitas Capital LLC | 0% | 0 | SCHEDULE 13G, 2025-11-14 | 2025-09-30 |
| Bank Of America Corp | 0% | 0 | SCHEDULE 13D/A, 2025-08-20 | 2025-08-18 |
| Saba Capital Management, L.P. | 0% | 0 | SCHEDULE 13D/A, 2025-09-02 | 2025-08-27 |
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More on Pioneer Municipal High Income Fund, Inc. and the records around it.
Companies that share a holder
- Almitas Capital LLC also filed stake reports on 8 other companies: MFS HIGH YIELD MUNICIPAL TRUST (Aug 2026), MFS INVESTMENT GRADE MUNICIPAL TRUST (Aug 2026), AN2 Therapeutics, Inc. (May 2026)
- RIVERNORTH CAPITAL MANAGEMENT, LLC also filed stake reports on 23 other companies: FG Merger II Corp. (Oct 2026), YHN Acquisition I Ltd (Oct 2026), BLACKROCK MUNIYIELD QUALITY FUND III, INC. (Aug 2026)
- Sit Investment Associates, Inc. also filed stake reports on 67 other companies: TCW STRATEGIC INCOME FUND INC (Nov 2026), Western Asset Premier Bond Fund (Nov 2026), Blackstone Long-Short Credit Income Fund (Oct 2026)
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Purpose of Transaction (Item 4)
Bank Of America Corp
Item 4 of the Original Schedule 13D is hereby amended by adding the following paragraph at the end thereof: "As a result of the redemption, the Reporting Persons no longer own any VMTP Shares (CUSIP No. 723763405) of the Issuer."Item 4 of the SCHEDULE 13D/A filed 2025-08-20
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-05 | Sit Investment Associates, Inc. | 11.5% | SCHEDULE 13G/A |
| 2025-08-14 | Rivernorth Capital Management, LLC | 4.41% | SCHEDULE 13G/A |
| 2025-08-15 | Almitas Capital LLC | 5.2% | SCHEDULE 13G |
| 2025-08-20 | Bank Of America Corp | 0% | SCHEDULE 13D/A |
| 2025-09-02 | Saba Capital Management, L.P. | 0% | SCHEDULE 13D/A |
| 2025-11-14 | Almitas Capital LLC | 0% | SCHEDULE 13G |
Questions about who owns Pioneer Municipal High Income Fund, Inc.
Who owns Pioneer Municipal High Income Fund, Inc.?
On this page, one holder's latest ownership filing reports 5% or more of Pioneer Municipal High Income Fund, Inc.: Sit Investment Associates, Inc. (11.5%, Schedule 13G/A, filed 2025-08-05).
When did Sit Investment Associates, Inc. buy into Pioneer Municipal High Income Fund, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Sit Investment Associates, Inc. on this page is the Schedule 13G/A, filed 2025-08-05, reporting 11.5%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 6 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.