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Nuveen Municipal High Income Opportunity Fund
NMZ

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.

New
Increased
Maintained
Reduced
Closed

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)

Holders
137
Holders Change
+6
Holders Change %
+4.58%
% of All Funds
1.69%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
21
Increased
60
Reduced
22
Closed
11
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
HWAM
Hennion & Walsh Asset Management
New Jersey
+$5.21M
2
RCM
Robinson Capital Management
Michigan
+$3.48M
3
GC
Guggenheim Capital
Illinois
+$2.37M
4
Cerity Partners
Cerity Partners
New York
+$1.23M
5
Northwestern Mutual Wealth Management
Northwestern Mutual Wealth Management
Wisconsin
+$1.05M

Top Sellers

Rank Fund Capital Flow
1
Jane Street
Jane Street
New York
-$2.28M
2
GP
Gridiron Partners
Pennsylvania
-$1.2M
3
UBS Group
UBS Group
Switzerland
-$1.16M
4
JWCA
J.W. Cole Advisors
Florida
-$815K
5
LCM
Landscape Capital Management
New Jersey
-$663K
Name Holding Trade Value Shares
Change 		Change in
Stake
HNWAG
26
High Net Worth Advisory Group
Florida
$1.46M -$113K -10,782 -7%
Truist Financial
27
Truist Financial
North Carolina
$1.44M +$94.5K +9,044 +7%
PVM
28
Palogic Value Management
Texas
$1.38M +$20.9K +2,000 +2%
Rockefeller Capital Management
29
Rockefeller Capital Management
New York
$1.36M -$70.7K -6,764 -5%
PI
30
PFG Investments
New York
$1.33M +$13.7K +1,315 +1%
HAG
31
HighPoint Advisor Group
Illinois
$1.3M +$82K +7,847 +7%
Cerity Partners
32
Cerity Partners
New York
$1.23M +$1.23M +118,083 New
EIP
33
Ellis Investment Partners
Pennsylvania
$1.16M +$57.8K +5,537 +5%
MWS
34
MFA Wealth Services
California
$1.14M +$9.32K +892 +0.8%
WAM
35
Wakefield Asset Management
Colorado
$1.06M +$109K +10,447 +11%
P
36
&Partners
Tennessee
$970K +$3.63K +347 +0.4%
Ameriprise
37
Ameriprise
Minnesota
$946K -$69.3K -6,631 -7%
AFP
38
Ausdal Financial Partners
Iowa
$880K +$142K +13,635 +19%
TAM
39
TCP Asset Management
Ohio
$870K +$875K +83,795 New
Cambridge Investment Research Advisors
40
Cambridge Investment Research Advisors
Iowa
$851K +$6.46K +618 +0.8%
Envestnet Asset Management
41
Envestnet Asset Management
Illinois
$847K -$7.28K -697 -0.8%
CP
42
Camelot Portfolios
Ohio
$756K -$2.41K -231 -0.3%
WA
43
WESPAC Advisors
California
$754K – – –
WFP
44
Worthington Financial Partners
Ohio
$729K +$533 +51 +0.1%
VVP
45
Venture Visionary Partners
Ohio
$729K +$219 +21 +0%
EWA
46
EQ Wealth Advisors
Texas
$684K +$23.4K +2,240 +4%
PAG
47
Private Advisor Group
New Jersey
$563K +$26.6K +2,544 +5%
NA
48
NewEdge Advisors
Louisiana
$558K -$40.9K -3,912 -7%
YIA
49
YHB Investment Advisors
Connecticut
$551K +$554K +53,055 New
XT
50
XTX Topco
Cayman Islands
$512K +$219K +20,964 +74%
1
2
3 4 5

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.