Pioneer Municipal High Income Opportunities Fund
MIO
MIO was delisted on the 22nd of August, 2025.
34 hedge funds and large institutions have $109M invested in Pioneer Municipal High Income Opportunities Fund in 2025 Q1 according to their latest regulatory filings, with 6 funds opening new positions, 10 increasing their positions, 14 reducing their positions, and 3 closing their positions.
100% more first-time investments, than exits
New positions opened: 6 | Existing positions closed: 3
10% more funds holding
Funds holding: 31 → 34 (+3)
0.32% more ownership
Funds ownership: 54.43% → 54.76% (+0.32%)
0% more capital invested
Capital invested by funds: $109M → $109M (+$278K)
29% less repeat investments, than reductions
Existing positions increased: 10 | Existing positions reduced: 14
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RCM
Rivernorth Capital Management
West Palm Beach,
Florida
|
+$1.73M |
| 2 |
HWAM
Hennion & Walsh Asset Management
Parsippany,
New Jersey
|
+$1.6M |
| 3 |
Verition Fund Management
Greenwich,
Connecticut
|
+$906K |
| 4 |
SCM
Saba Capital Management
New York
|
+$405K |
| 5 |
AAM
Auxier Asset Management
Aurora,
Oregon
|
+$207K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
-$1.16M |
| 2 |
Pathstone Holdings
Englewood,
New Jersey
|
-$1.1M |
| 3 |
Wells Fargo
San Francisco,
California
|
-$533K |
| 4 |
VanEck Associates
New York
|
-$499K |
| 5 |
SA
Sanctuary Advisors
Indianapolis,
Indiana
|
-$415K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
S
26
SignatureFD
Atlanta,
Georgia
| $120K | +$1.53K | +127 | +1% |
|
|
SPIA
27
Steward Partners Investment Advisory
New York
| $99.4K | – | – | – |
|
28
Comerica Bank
Dallas,
Texas
| $37.2K | -$48 | -4 | -0.1% |
|
29
CIBC Private Wealth Group
Atlanta,
Georgia
| $28.4K | +$30.1K | +2,500 | New |
|
|
AF
30
Atala Financial
Calabasas,
California
| $22.2K | -$363K | -30,161 | -94% |
|
|
GWM
31
Geneos Wealth Management
Englewood,
Colorado
| $16.9K | +$14.8K | +1,234 | +614% |
|
32
Osaic Holdings
Scottsdale,
Arizona
| $12.5K | -$2.8K | -233 | -18% |
|
|
WA
33
WPG Advisers
Baltimore,
Maryland
| $1K | -$1.47K | -122 | -59% |
|
|
CCM
34
Coldstream Capital Management
Bellevue,
Washington
| $519 | +$529 | +44 | New |
|
|
SA
35
Sanctuary Advisors
Indianapolis,
Indiana
| – | -$415K | -34,260 | Closed |
|
|
IAA
36
Independent Advisor Alliance
Charlotte,
North Carolina
| – | -$172K | -14,515 | Closed |
|
|
AWM
37
Avior Wealth Management
Omaha,
Nebraska
| – | -$89.9K | -7,583 | Closed |
|
MIO Hedge Fund Activity: Q1 2025 in Review
34 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in Pioneer Municipal High Income Opportunities Fund (MIO) for Q1 2025, worth a combined $109M — up 0.25% from $109M a quarter earlier.
Buyers outnumbered sellers: 6 funds opened new MIO positions and 3 closed out — a net gain of 3 holders — while 10 added to existing stakes and 14 trimmed.
The largest buyer was Rivernorth Capital Management, adding an estimated $1.73M. The largest seller was Morgan Stanley, cutting an estimated $1.16M.
- 34 institutional investors held Pioneer Municipal High Income Opportunities Fund (MIO) as of Q1 2025, up from 31 in Q4 2024.
- Funds reported $109M of Pioneer Municipal High Income Opportunities Fund stock for Q1 2025, up 0.25% quarter-over-quarter.
- 6 funds opened new Pioneer Municipal High Income Opportunities Fund positions in Q1 2025 and 3 closed out, a net change of +3 holders.
- The largest Pioneer Municipal High Income Opportunities Fund buyer in Q1 2025 was Rivernorth Capital Management, an estimated $1.73M added.
- The largest Pioneer Municipal High Income Opportunities Fund seller in Q1 2025 was Morgan Stanley, an estimated $1.16M sold.
Based on aggregated 13F filings for Q1 2025.