Nuveen Municipal High Income Opportunity Fund
137 hedge funds and large institutions have $208M invested in Nuveen Municipal High Income Opportunity Fund in 2026 Q1 according to their latest regulatory filings, with 21 funds opening new positions, 60 increasing their positions, 22 reducing their positions, and 11 closing their positions.
173% more repeat investments, than reductions
Existing positions increased: 60 | Existing positions reduced: 22
91% more first-time investments, than exits
New positions opened: 21 | Existing positions closed: 11
8% more capital invested
Capital invested by funds: $193M → $208M (+$15.4M)
5% more funds holding
Funds holding: 131 → 137 (+6)
0.99% more ownership
Funds ownership: 16.45% → 17.45% (+0.99%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
HWAM
Hennion & Walsh Asset Management
Parsippany,
New Jersey
|
+$5.21M |
| 2 |
RCM
Robinson Capital Management
Grosse Pointe Farms,
Michigan
|
+$3.48M |
| 3 |
GC
Guggenheim Capital
Chicago,
Illinois
|
+$2.37M |
| 4 |
Cerity Partners
New York
|
+$1.23M |
| 5 |
Northwestern Mutual Wealth Management
Milwaukee,
Wisconsin
|
+$1.05M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jane Street
New York
|
-$2.28M |
| 2 |
GP
Gridiron Partners
Wexford,
Pennsylvania
|
-$1.2M |
| 3 |
UBS Group
Zurich,
Switzerland
|
-$1.16M |
| 4 |
JWCA
J.W. Cole Advisors
Tampa,
Florida
|
-$815K |
| 5 |
LCM
Landscape Capital Management
Englewood,
New Jersey
|
-$663K |
NMZ Hedge Fund Activity: Q1 2026 in Review
137 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Nuveen Municipal High Income Opportunity Fund (NMZ) for Q1 2026, worth a combined $208M — up 8% from $193M a quarter earlier.
Buyers outnumbered sellers: 21 funds opened new NMZ positions and 11 closed out — a net gain of 10 holders — while 60 added to existing stakes and 22 trimmed.
The largest buyer was Hennion & Walsh Asset Management, adding an estimated $5.21M. The largest seller was Jane Street, cutting an estimated $2.28M.
- 137 institutional investors held Nuveen Municipal High Income Opportunity Fund (NMZ) as of Q1 2026, up from 131 in Q4 2025.
- Funds reported $208M of Nuveen Municipal High Income Opportunity Fund stock for Q1 2026, up 8% quarter-over-quarter.
- 21 funds opened new Nuveen Municipal High Income Opportunity Fund positions in Q1 2026 and 11 closed out, a net change of +10 holders.
- The largest Nuveen Municipal High Income Opportunity Fund buyer in Q1 2026 was Hennion & Walsh Asset Management, an estimated $5.21M added.
- The largest Nuveen Municipal High Income Opportunity Fund seller in Q1 2026 was Jane Street, an estimated $2.28M sold.
Based on aggregated 13F filings for Q1 2026.