Pioneer Municipal High Income Opportunities Fund, Inc.
MIODelisted Aug 27, 2025- SEC CIK
- 0001864290
Pioneer Municipal High Income Opportunities Fund, Inc. was delisted on Aug 27, 2025; its insiders filed their last Form 4 on Sep 2, 2025; 31 institutions reported holding it in 13F filings for Q2 2025, worth $108.4M in total; no superinvestor held it.
Holders of 5% or more of MIO
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Pioneer Municipal High Income Opportunities Fund, Inc., largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of Pioneer Municipal High Income Opportunities Fund, Inc. on Schedule 13D or 13G.
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
12 Schedule 13D and 13G filings on Pioneer Municipal High Income Opportunities Fund, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Sep 2, 20256:03 AM ET | Saba Capital Management, L.P.and 2 others | 13D/A | 0.00%0 shares | −12.52 ppfrom 12.52%Below 5% | Aug 27, 2025 | SEC |
| Aug 14, 20254:24 PM ET | Rivernorth Capital Management, LLC | 13G/A | 4.46%752.5K shares | −4.02 ppfrom 8.48%Below 5% | Jun 30, 2025 | SEC |
| Feb 14, 202512:52 PM ET | Rivernorth Capital Management, LLC | 13G | 8.48%1.43M shares | New | Dec 31, 2024 | SEC |
| Feb 4, 202510:35 AM ET | Saba Capital Management, L.P.and 2 others | 13D/A | 12.52%2.11M shares | +0.03 ppfrom 12.49% | Jan 31, 2025 | SEC |
| Jan 28, 20254:30 PM ET | Saba Capital Management, L.P.and 2 others | 13D/A | 12.49%2.11M shares | +0.74 ppfrom 11.75% | Jan 24, 2025 | SEC |
| Dec 23, 20249:07 PM ET | Saba Capital Management, L.P.and 2 others | 13D/A | 11.75%1.98M shares | – | Dec 19, 2024 | SEC |
| Aug 21, 2024 | Saba Capital Management, L.P. | 13D/AOld format | – | – | – | SEC |
| Apr 1, 2024 | Saba Capital Management, L.P. | 13D/AOld format | – | – | – | SEC |
| Jan 5, 2024 | Saba Capital Management, L.P. | 13DOld format | – | – | – | SEC |
| Feb 14, 2023 | Saba Capital Management, L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2023 | Sit Investment Associates Inc | 13GOld format | – | New | – | SEC |
| Nov 22, 2022 | Saba Capital Management, L.P. | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Pioneer Municipal High Income Opportunities Fund, Inc. shares.
No Form 144 notices for Pioneer Municipal High Income Opportunities Fund, Inc. are on file.