Nuveen Municipal High Income Opportunity Fund
131 hedge funds and large institutions have $193M invested in Nuveen Municipal High Income Opportunity Fund in 2025 Q4 according to their latest regulatory filings, with 25 funds opening new positions, 39 increasing their positions, 41 reducing their positions, and 14 closing their positions.
79% more first-time investments, than exits
New positions opened: 25 | Existing positions closed: 14
6% more funds holding
Funds holding: 124 → 131 (+7)
4% more capital invested
Capital invested by funds: $185M → $193M (+$8.14M)
0.23% more ownership
Funds ownership: 16.23% → 16.45% (+0.23%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
5% less repeat investments, than reductions
Existing positions increased: 39 | Existing positions reduced: 41
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
HWAM
Hennion & Walsh Asset Management
Parsippany,
New Jersey
|
+$4.39M |
| 2 |
Jane Street
New York
|
+$2.55M |
| 3 |
GC
Guggenheim Capital
Chicago,
Illinois
|
+$1.82M |
| 4 |
AAM
Advisors Asset Management
Monument,
Colorado
|
+$1.77M |
| 5 |
VanEck Associates
New York
|
+$1.58M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
GP
Gridiron Partners
Wexford,
Pennsylvania
|
-$12.8M |
| 2 |
Bank of America
Charlotte,
North Carolina
|
-$1.3M |
| 3 |
RCG
Regatta Capital Group
El Segundo,
California
|
-$1.16M |
| 4 |
HNWAG
High Net Worth Advisory Group
Naples,
Florida
|
-$830K |
| 5 |
PI
PFG Investments
Woodbury,
New York
|
-$525K |
NMZ Hedge Fund Activity: Q4 2025 in Review
131 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in Nuveen Municipal High Income Opportunity Fund (NMZ) for Q4 2025, worth a combined $193M — up 4.4% from $185M a quarter earlier.
Buyers outnumbered sellers: 25 funds opened new NMZ positions and 14 closed out — a net gain of 11 holders — while 39 added to existing stakes and 41 trimmed.
The largest buyer was Hennion & Walsh Asset Management, adding an estimated $4.39M. The largest seller was Gridiron Partners, cutting an estimated $12.8M.
- 131 institutional investors held Nuveen Municipal High Income Opportunity Fund (NMZ) as of Q4 2025, up from 124 in Q3 2025.
- Funds reported $193M of Nuveen Municipal High Income Opportunity Fund stock for Q4 2025, up 4.4% quarter-over-quarter.
- 25 funds opened new Nuveen Municipal High Income Opportunity Fund positions in Q4 2025 and 14 closed out, a net change of +11 holders.
- The largest Nuveen Municipal High Income Opportunity Fund buyer in Q4 2025 was Hennion & Walsh Asset Management, an estimated $4.39M added.
- The largest Nuveen Municipal High Income Opportunity Fund seller in Q4 2025 was Gridiron Partners, an estimated $12.8M sold.
Based on aggregated 13F filings for Q4 2025.