Nuveen Municipal High Income Opportunity Fund
133 hedge funds and large institutions have $196M invested in Nuveen Municipal High Income Opportunity Fund in 2025 Q4 according to their latest regulatory filings, with 24 funds opening new positions, 42 increasing their positions, 41 reducing their positions, and 14 closing their positions.
71% more first-time investments, than exits
New positions opened: 24 | Existing positions closed: 14
18% more capital inflows, than outflows
Capital inflows: $27.6M | Capital outflows: $23.3M
5% more funds holding
Funds holding: 127 → 133 (+6)
2% more repeat investments, than reductions
Existing positions increased: 42 | Existing positions reduced: 41
0.28% more ownership
Funds ownership: 16.41% → 16.69% (+0.28%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Hennion & Walsh Asset Management
Parsippany,
New Jersey
|
+$4.39M |
| 2 |
Jane Street
New York
|
+$2.55M |
| 3 |
Guggenheim Capital
Chicago,
Illinois
|
+$1.82M |
| 4 |
Advisors Asset Management
Monument,
Colorado
|
+$1.77M |
| 5 |
VanEck Associates
New York
|
+$1.58M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Gridiron Partners
Wexford,
Pennsylvania
|
-$12.8M |
| 2 |
Bank of America
Charlotte,
North Carolina
|
-$1.3M |
| 3 |
Regatta Capital Group
El Segundo,
California
|
-$1.16M |
| 4 |
High Net Worth Advisory Group
Naples,
Florida
|
-$830K |
| 5 |
PFG Investments
Woodbury,
New York
|
-$525K |
NMZ Hedge Fund Activity: Q4 2025 in Review
133 of the 8,303 institutional investors tracked by Wall St. Rank reported a position in Nuveen Municipal High Income Opportunity Fund (NMZ) for Q4 2025, worth a combined $196M — up 4.6% from $187M a quarter earlier.
Buyers outnumbered sellers: 24 funds opened new NMZ positions and 14 closed out — a net gain of 10 holders — while 42 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.
- 133 institutional investors held Nuveen Municipal High Income Opportunity Fund (NMZ) as of Q4 2025, up from 127 in Q3 2025.
- Funds reported $196M of Nuveen Municipal High Income Opportunity Fund stock for Q4 2025, up 4.6% quarter-over-quarter.
- 24 funds opened new Nuveen Municipal High Income Opportunity Fund positions in Q4 2025 and 14 closed out, a net change of +10 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.