Pioneer Municipal High Income Opportunities Fund
MIO
MIO was delisted on the 22nd of August, 2025.
1 hedge funds and large institutions have $12.1K invested in Pioneer Municipal High Income Opportunities Fund in 2025 Q3 according to their latest regulatory filings, with 0 funds opening new positions, 0 increasing their positions, 1 reducing their positions, and 30 closing their positions.
54.42% less ownership
Funds ownership: 54.43% → 0.01% (-54%)
97% less funds holding
Funds holding: 31 → 1 (-30)
100% less capital invested
Capital invested by funds: $108M → $12.1K (-$108M)
100% less funds holding in top 10
Funds holding in top 10: 1 → 0 (-1)
100% less first-time investments, than exits
New positions opened: 0 | Existing positions closed: 30
100% less repeat investments, than reductions
Existing positions increased: 0 | Existing positions reduced: 1
Top Buyers
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SIA
Sit Investment Associates
Minneapolis,
Minnesota
|
-$30.3M |
| 2 |
SCM
Saba Capital Management
New York
|
-$25.5M |
| 3 |
AC
Almitas Capital
Santa Monica,
California
|
-$9.33M |
| 4 |
RCM
Rivernorth Capital Management
West Palm Beach,
Florida
|
-$8.88M |
| 5 |
Morgan Stanley
New York
|
-$6.93M |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
WFA
26
Wellspring Financial Advisors
Cleveland,
Ohio
| – | -$118K | -10,000 | Closed |
|
|
WAM
27
Wolverine Asset Management
Chicago,
Illinois
| – | -$112K | -9,520 | Closed |
|
|
SPIA
28
Steward Partners Investment Advisory
New York
| – | -$98.8K | -8,372 | Closed |
|
|
AA
29
Ancora Advisors
Cleveland,
Ohio
| – | -$81.8K | -6,930 | Closed |
|
30
Cohen & Steers
New York
| – | -$59K | -5,000 | Closed |
|
31
Comerica Bank
Dallas,
Texas
| – | -$37.2K | -3,150 | Closed |
|
MIO Hedge Fund Activity: Q3 2025 in Review
1 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in Pioneer Municipal High Income Opportunities Fund (MIO) for Q3 2025, worth a combined $12.1K — down 100% from $108M a quarter earlier.
Sellers outnumbered buyers: 30 funds closed out of MIO and 0 opened new positions — a net loss of 30 holders — while 1 trimmed existing stakes and 0 added.
The largest seller was Sit Investment Associates, exiting entirely with an estimated $30.3M sold.
- 1 institutional investor held Pioneer Municipal High Income Opportunities Fund (MIO) as of Q3 2025, down from 31 in Q2 2025.
- Funds reported $12.1K of Pioneer Municipal High Income Opportunities Fund stock for Q3 2025, down 100% quarter-over-quarter.
- 0 funds opened new Pioneer Municipal High Income Opportunities Fund positions in Q3 2025 and 30 closed out, a net change of -30 holders.
- The largest Pioneer Municipal High Income Opportunities Fund seller in Q3 2025 was Sit Investment Associates, an estimated $30.3M sold.
Based on aggregated 13F filings for Q3 2025.