Pioneer Municipal High Income Opportunities Fund
MIO
MIO was delisted on the 22nd of August, 2025.
31 hedge funds and large institutions have $84.3M invested in Pioneer Municipal High Income Opportunities Fund in 2024 Q1 according to their latest regulatory filings, with 4 funds opening new positions, 11 increasing their positions, 12 reducing their positions, and 6 closing their positions.
3% less capital invested
Capital invested by funds: $86.8M → $84.3M (-$2.43M)
8% less repeat investments, than reductions
Existing positions increased: 11 | Existing positions reduced: 12
4.44% less ownership
Funds ownership: 48.61% → 44.17% (-4.4%)
6% less funds holding
Funds holding: 33 → 31 (-2)
33% less first-time investments, than exits
New positions opened: 4 | Existing positions closed: 6
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SIA
Sit Investment Associates
Minneapolis,
Minnesota
|
+$3.04M |
| 2 |
SCM
Saba Capital Management
New York
|
+$1.27M |
| 3 |
GC
Guggenheim Capital
Chicago,
Illinois
|
+$1.16M |
| 4 |
Bank of New York Mellon
New York
|
+$521K |
| 5 |
WA
Whitebox Advisors
Minneapolis,
Minnesota
|
+$488K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
-$10.9M |
| 2 |
1CP
1607 Capital Partners
Richmond,
Virginia
|
-$1.19M |
| 3 |
MC
Matisse Capital
Portland,
Oregon
|
-$1.1M |
| 4 |
COLIM
City of London Investment Management
London,
United Kingdom
|
-$662K |
| 5 |
RCM
Robinson Capital Management
Grosse Pointe Farms,
Michigan
|
-$392K |
MIO Hedge Fund Activity: Q1 2024 in Review
31 of the 6,943 institutional investors tracked by Wall St. Rank reported a position in Pioneer Municipal High Income Opportunities Fund (MIO) for Q1 2024, worth a combined $84.3M — down 2.8% from $86.8M a quarter earlier.
Sellers outnumbered buyers: 6 funds closed out of MIO and 4 opened new positions — a net loss of 2 holders — while 12 trimmed existing stakes and 11 added.
The largest buyer was Sit Investment Associates, adding an estimated $3.04M. The largest seller was Morgan Stanley, cutting an estimated $10.9M.
- 31 institutional investors held Pioneer Municipal High Income Opportunities Fund (MIO) as of Q1 2024, down from 33 in Q4 2023.
- Funds reported $84.3M of Pioneer Municipal High Income Opportunities Fund stock for Q1 2024, down 2.8% quarter-over-quarter.
- 4 funds opened new Pioneer Municipal High Income Opportunities Fund positions in Q1 2024 and 6 closed out, a net change of -2 holders.
- The largest Pioneer Municipal High Income Opportunities Fund buyer in Q1 2024 was Sit Investment Associates, an estimated $3.04M added.
- The largest Pioneer Municipal High Income Opportunities Fund seller in Q1 2024 was Morgan Stanley, an estimated $10.9M sold.
Based on aggregated 13F filings for Q1 2024.