Nuveen Municipal High Income Opportunity Fund
213 hedge funds and large institutions have $359M invested in Nuveen Municipal High Income Opportunity Fund in 2026 Q2 according to their latest regulatory filings, with 89 funds opening new positions, 80 increasing their positions, 20 reducing their positions, and 12 closing their positions.
642% more first-time investments, than exits
New positions opened: 89 | Existing positions closed: 12
300% more repeat investments, than reductions
Existing positions increased: 80 | Existing positions reduced: 20
71% more capital invested
Capital invested by funds: $209M → $359M (+$149M)
54% more funds holding
Funds holding: 138 → 213 (+75)
11.95% more ownership
Funds ownership: 17.53% → 29.48% (+12%)
100% less funds holding in top 10
Funds holding in top 10: 1 → 0 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SIA
Sit Investment Associates
Minneapolis,
Minnesota
|
+$24M |
| 2 |
Wells Fargo
San Francisco,
California
|
+$15.2M |
| 3 |
RCM
Rivernorth Capital Management
West Palm Beach,
Florida
|
+$10.8M |
| 4 |
JWCA
J.W. Cole Advisors
Tampa,
Florida
|
+$10.5M |
| 5 |
Raymond James Financial
St Petersburg,
Florida
|
+$8.33M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
UBS Group
Zurich,
Switzerland
|
-$3.99M |
| 2 |
RCM
Robinson Capital Management
Grosse Pointe Farms,
Michigan
|
-$3.39M |
| 3 |
GP
Gridiron Partners
Wexford,
Pennsylvania
|
-$2.24M |
| 4 |
Stifel Financial
St. Louis,
Missouri
|
-$1.13M |
| 5 |
Mariner
Overland Park,
Kansas
|
-$1.1M |
NMZ Hedge Fund Activity: Q2 2026 in Review
213 of the 8,305 institutional investors tracked by Wall St. Rank reported a position in Nuveen Municipal High Income Opportunity Fund (NMZ) for Q2 2026, worth a combined $359M — up 71% from $209M a quarter earlier.
Buyers outnumbered sellers: 89 funds opened new NMZ positions and 12 closed out — a net gain of 77 holders — while 80 added to existing stakes and 20 trimmed.
The largest buyer was Sit Investment Associates, opening a new position worth an estimated $24M. The largest seller was UBS Group, cutting an estimated $3.99M.
- 213 institutional investors held Nuveen Municipal High Income Opportunity Fund (NMZ) as of Q2 2026, up from 138 in Q1 2026.
- Funds reported $359M of Nuveen Municipal High Income Opportunity Fund stock for Q2 2026, up 71% quarter-over-quarter.
- 89 funds opened new Nuveen Municipal High Income Opportunity Fund positions in Q2 2026 and 12 closed out, a net change of +77 holders.
- The largest Nuveen Municipal High Income Opportunity Fund buyer in Q2 2026 was Sit Investment Associates, an estimated $24M added.
- The largest Nuveen Municipal High Income Opportunity Fund seller in Q2 2026 was UBS Group, an estimated $3.99M sold.
Based on aggregated 13F filings for Q2 2026.