Pioneer Municipal High Income Opportunities Fund
MIO
MIO was delisted on the 22nd of August, 2025.
29 hedge funds and large institutions have $67.8M invested in Pioneer Municipal High Income Opportunities Fund in 2023 Q3 according to their latest regulatory filings, with 9 funds opening new positions, 11 increasing their positions, 5 reducing their positions, and 4 closing their positions.
125% more first-time investments, than exits
New positions opened: 9 | Existing positions closed: 4
120% more repeat investments, than reductions
Existing positions increased: 11 | Existing positions reduced: 5
21% more funds holding
Funds holding: 24 → 29 (+5)
3.58% more ownership
Funds ownership: 38.44% → 42.02% (+3.6%)
3% less capital invested
Capital invested by funds: $70M → $67.8M (-$2.22M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SCM
Saba Capital Management
New York
|
+$2.09M |
| 2 |
API
Advisor Partners II
Walnut Creek,
California
|
+$1.86M |
| 3 |
SIA
Sit Investment Associates
Minneapolis,
Minnesota
|
+$1.68M |
| 4 |
GC
Guggenheim Capital
Chicago,
Illinois
|
+$807K |
| 5 |
Wells Fargo
San Francisco,
California
|
+$562K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RCM
Rivernorth Capital Management
West Palm Beach,
Florida
|
-$708K |
| 2 |
WP
Woodline Partners
San Francisco,
California
|
-$523K |
| 3 |
Bank of New York Mellon
New York
|
-$255K |
| 4 |
NA
NewEdge Advisors
New Orleans,
Louisiana
|
-$160K |
| 5 |
VanEck Associates
New York
|
-$153K |
MIO Hedge Fund Activity: Q3 2023 in Review
29 of the 6,310 institutional investors tracked by Wall St. Rank reported a position in Pioneer Municipal High Income Opportunities Fund (MIO) for Q3 2023, worth a combined $67.8M — down 3.2% from $70M a quarter earlier.
Buyers outnumbered sellers: 9 funds opened new MIO positions and 4 closed out — a net gain of 5 holders — while 11 added to existing stakes and 5 trimmed.
The largest buyer was Saba Capital Management, adding an estimated $2.09M. The largest seller was Rivernorth Capital Management, exiting entirely with an estimated $708K sold.
- 29 institutional investors held Pioneer Municipal High Income Opportunities Fund (MIO) as of Q3 2023, up from 24 in Q2 2023.
- Funds reported $67.8M of Pioneer Municipal High Income Opportunities Fund stock for Q3 2023, down 3.2% quarter-over-quarter.
- 9 funds opened new Pioneer Municipal High Income Opportunities Fund positions in Q3 2023 and 4 closed out, a net change of +5 holders.
- The largest Pioneer Municipal High Income Opportunities Fund buyer in Q3 2023 was Saba Capital Management, an estimated $2.09M added.
- The largest Pioneer Municipal High Income Opportunities Fund seller in Q3 2023 was Rivernorth Capital Management, an estimated $708K sold.
Based on aggregated 13F filings for Q3 2023.