Pioneer Municipal High Income Opportunities Fund
MIO
MIO was delisted on the 22nd of August, 2025.
0 hedge funds and large institutions have $0 invested in Pioneer Municipal High Income Opportunities Fund in 2025 Q4 according to their latest regulatory filings, with funds opening new positions, increasing their positions, 0 reducing their positions, and 1 closing their positions.
0.01% less ownership
Funds ownership: 0.01% → 0% (-0.01%)
100% less funds holding
Funds holding: 1 → 0 (-1)
100% less capital invested
Capital invested by funds: $12.1K → $0 (-$12.1K)
100% less first-time investments, than exits
New positions opened: 0 | Existing positions closed: 1
Top Buyers
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Osaic Holdings
Scottsdale,
Arizona
|
-$12.1K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
1
Osaic Holdings
Scottsdale,
Arizona
| – | -$12.1K | -1,060 | Closed |
|
MIO Hedge Fund Activity: Q4 2025 in Review
0 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in Pioneer Municipal High Income Opportunities Fund (MIO) for Q4 2025, worth a combined $0 — down 100% from $12.1K a quarter earlier.
Sellers outnumbered buyers: 1 fund closed out of MIO and 0 opened new positions — a net loss of 1 holder — while 0 trimmed existing stakes and 0 added.
The largest seller was Osaic Holdings, exiting entirely with an estimated $12.1K sold.
- 0 institutional investors held Pioneer Municipal High Income Opportunities Fund (MIO) as of Q4 2025, down from 1 in Q3 2025.
- Funds reported $0 of Pioneer Municipal High Income Opportunities Fund stock for Q4 2025, down 100% quarter-over-quarter.
- 0 funds opened new Pioneer Municipal High Income Opportunities Fund positions in Q4 2025 and 1 closed out, a net change of -1 holder.
- The largest Pioneer Municipal High Income Opportunities Fund seller in Q4 2025 was Osaic Holdings, an estimated $12.1K sold.
Based on aggregated 13F filings for Q4 2025.