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Nuveen Municipal High Income Opportunity Fund
NMZ

124 hedge funds and large institutions have $185M invested in Nuveen Municipal High Income Opportunity Fund in 2025 Q3 according to their latest regulatory filings, with 13 funds opening new positions, 47 increasing their positions, 33 reducing their positions, and 16 closing their positions.

New
Increased
Maintained
Reduced
Closed

42% more repeat investments, than reductions

Existing positions increased: 47 | Existing positions reduced: 33

4% more capital invested

Capital invested by funds: $178M → $185M (+$6.66M)

0.68% more ownership

Funds ownership: 15.55% → 16.23% (+0.68%)

0% more funds holding in top 10

Funds holding in top 10: 1 → 1 (0)

2% less funds holding

Funds holding: 127 → 124 (-3)

19% less first-time investments, than exits

New positions opened: 13 | Existing positions closed: 16

Holders
124
Holders Change
-3
Holders Change %
-2.36%
% of All Funds
1.63%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
13
Increased
47
Reduced
33
Closed
16
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
GP
Gridiron Partners
Pennsylvania
+$12.4M
2
UBS Group
UBS Group
Switzerland
+$1.88M
3
Northwestern Mutual Wealth Management
Northwestern Mutual Wealth Management
Wisconsin
+$1.74M
4
LPL Financial
LPL Financial
California
+$1.35M
5
GC
Guggenheim Capital
Illinois
+$1.05M

Top Sellers

1
Morgan Stanley
Morgan Stanley
New York
-$1.96M
2
SI
Stephens Inc
Arkansas
-$1.01M
3
WANY
Wealthspire Advisors (New York)
New York
-$824K
4
IAS
Insigneo Advisory Services
Florida
-$537K
5
T
Transce3nd
Texas
-$479K
Name Holding Trade Value Shares
Change 		Change in
Stake
HF
76
HRT Financial
New York
$168K +$162K +15,909 New
VHAM
77
Van Hulzen Asset Management
California
$166K – – –
DADC
78
D.A. Davidson & Co
Montana
$160K – – –
DAS
79
Dynamic Advisor Solutions
Arizona
$156K +$17.5K +1,713 +13%
TWP
80
Tyche Wealth Partners
Texas
$152K – – –
RCA
81
Ranch Capital Advisors
Florida
$147K -$5.41K -530 -4%
IFG
82
Independent Financial Group
California
$138K -$102K -10,000 -43%
MFG
83
Merit Financial Group
Georgia
$133K -$7.3K -715 -5%
Thrivent Financial for Lutherans
84
Thrivent Financial for Lutherans
Minnesota
$133K +$128K +12,530 New
SIMG
85
Sonora Investment Management Group
Arizona
$129K – – –
SWM
86
Spire Wealth Management
Virginia
$127K +$378 +37 +0.3%
BRWA
87
B. Riley Wealth Advisors
Florida
$127K -$18.6K -1,817 -13%
CIA
88
Concurrent Investment Advisors
Florida
$127K – – –
AC
89
AlphaCore Capital
California
$123K -$12.9K -1,261 -10%
BCP
90
Berkeley Capital Partners
Georgia
$123K -$6.13K -600 -5%
HVIA
91
Hudson Valley Investment Advisors
New York
$122K – – –
MCM
92
MAI Capital Management
Ohio
$117K – – –
PWP
93
Principle Wealth Partners
Connecticut
$116K – – –
SCM
94
Sage Capital Management
New Jersey
$111K – – –
HKAM
95
Horizon Kinetics Asset Management
New York
$110K -$71K -6,953 -40%
SCA
96
Snowden Capital Advisors
New York
$110K – – –
SAM
97
Secure Asset Management
Michigan
$107K -$21.1K -2,071 -17%
CCG
98
Ceeto Capital Group
Florida
$107K – – –
DWM
99
Diversify Wealth Management
Utah
$107K – – –
IA
100
Intellus Advisors
Florida
$106K – – –
2 3
4
5 6

NMZ Hedge Fund Activity: Q3 2025 in Review

124 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Nuveen Municipal High Income Opportunity Fund (NMZ) for Q3 2025, worth a combined $185M — up 3.7% from $178M a quarter earlier.

Sellers outnumbered buyers: 16 funds closed out of NMZ and 13 opened new positions — a net loss of 3 holders — while 33 trimmed existing stakes and 47 added.

The largest buyer was Gridiron Partners, adding an estimated $12.4M. The largest seller was Morgan Stanley, cutting an estimated $1.96M.

  • 124 institutional investors held Nuveen Municipal High Income Opportunity Fund (NMZ) as of Q3 2025, down from 127 in Q2 2025.
  • Funds reported $185M of Nuveen Municipal High Income Opportunity Fund stock for Q3 2025, up 3.7% quarter-over-quarter.
  • 13 funds opened new Nuveen Municipal High Income Opportunity Fund positions in Q3 2025 and 16 closed out, a net change of -3 holders.
  • The largest Nuveen Municipal High Income Opportunity Fund buyer in Q3 2025 was Gridiron Partners, an estimated $12.4M added.
  • The largest Nuveen Municipal High Income Opportunity Fund seller in Q3 2025 was Morgan Stanley, an estimated $1.96M sold.

Based on aggregated 13F filings for Q3 2025.