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Nuveen Municipal High Income Opportunity Fund

NMZ
Exchange
NYSE
SEC CIK
0001266585

In the last 90 days, Nuveen Municipal High Income Opportunity Fund insiders filed 3 open-market purchases and 3 sales; 213 institutions reported holding it in 13F filings for Q2 2026, worth $358.6M in total; no superinvestor holds it.

13F holders, Q2 2026

Institutional positions in Nuveen Municipal High Income Opportunity Fund as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
213
+76 vs. Q1 2026
Shares held
33.9M
+13.7M (+68.2%) vs. Q1 2026
Total value
$358.6M
+$149.2M (+71.3%) vs. Q1 2026
New holders
88
81 more added
Sold out
12
20 more reduced

1 institution that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting NMZ on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2026: 213 institutions
Q1 2021: 110 institutionsQ2 2021: 109 institutionsQ3 2021: 115 institutionsQ4 2021: 124 institutionsQ1 2022: 111 institutionsQ2 2022: 119 institutionsQ3 2022: 121 institutionsQ4 2022: 127 institutionsQ1 2023: 122 institutionsQ2 2023: 112 institutionsQ3 2023: 114 institutionsQ4 2023: 133 institutionsQ1 2024: 117 institutionsQ2 2024: 120 institutionsQ3 2024: 123 institutionsQ4 2024: 127 institutionsQ1 2025: 133 institutionsQ2 2025: 127 institutionsQ3 2025: 124 institutionsQ4 2025: 130 institutionsQ1 2026: 138 institutionsQ2 2026: 213 institutions
Value heldQ2 2026: $358.6M
Q1 2021: $121.9MQ2 2021: $139.8MQ3 2021: $144.6MQ4 2021: $155.9MQ1 2022: $135.6MQ2 2022: $126.0MQ3 2022: $110.2MQ4 2022: $126.8MQ1 2023: $148.6MQ2 2023: $142.7MQ3 2023: $126.6MQ4 2023: $152.2MQ1 2024: $165.4MQ2 2024: $169.4MQ3 2024: $186.7MQ4 2024: $180.7MQ1 2025: $188.9MQ2 2025: $178.2MQ3 2025: $184.9MQ4 2025: $193.0MQ1 2026: $209.4MQ2 2026: $358.6M
Institutions holding NMZ and their total value by quarter
QuarterHoldersValue
Q2 2026213$358.6M
Q1 2026138$209.4M
Q4 2025130$193.0M
Q3 2025124$184.9M
Q2 2025127$178.2M
Q1 2025133$188.9M
Q4 2024127$180.7M
Q3 2024123$186.7M
Q2 2024120$169.4M
Q1 2024117$165.4M
Q4 2023133$152.2M
Q3 2023114$126.6M
Q2 2023112$142.7M
Q1 2023122$148.6M
Q4 2022127$126.8M
Q3 2022121$110.2M
Q2 2022119$126.0M
Q1 2022111$135.6M
Q4 2021124$155.9M
Q3 2021115$144.6M
Q2 2021109$139.8M
Q1 2021110$121.9M

Institutions, Q2 2026

Shares, value and share of portfolio for each institution holding Nuveen Municipal High Income Opportunity Fund; share changes are against Q1 2026.

Institutions holding NMZ in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
IMA Wealth, Inc.150$1.59K0.00%+150New
Delta Asset Management LLC171$1.81K0.00%+171New
WPG Advisers, LLC231$2.44K0.00%+231New
CoreFirst Bank & Trust403$4.26K0.00%00.0%Unchanged
Maryland Capital Advisors Inc.427$4.51K0.00%+427New
MTM Investment Management, LLC574$6.07K0.00%+574New
Pinnacle Wealth Planning Services, Inc.832$8.79K0.00%+832New
Trust Co of Toledo NA1,000$10.6K0.00%00.0%Unchanged
Manchester Capital Management LLC1,000$10.6K0.00%00.0%Unchanged
IFP Advisors, Inc1,003$10.6K0.00%−259−20.5%Reduced
Assetmark, Inc1,173$12.4K0.00%+837+249.1%Added
EverSource Wealth Advisors, LLC1,587$16.8K0.00%+1,587New
International Assets Investment Management, LLC1,603$16.9K0.00%+924+136.1%Added
Daytona Street Capital LLC1,812$18.8K0.01%+1,812New
Highline Wealth Partners LLC2,000$21.1K0.00%00.0%Unchanged
Bare Financial Services, Inc2,173$23.0K0.01%+2,173New
Private Trust Co NA2,410$25.5K0.00%+1,210+100.8%Added
Princeton Global Asset Management LLC2,494$26.4K0.00%+2,494New
Blue Bell Private Wealth Management, LLC2,532$26.8K0.00%+2,532New
Key Financial Inc2,868$30.3K0.00%+2,868New
Costello Asset Management, INC3,310$35.0K0.01%+3,310New
Geneos Wealth Management Inc.3,512$37.1K0.00%00.0%Unchanged
Bogart Wealth, LLC3,555$37.6K0.00%+3,555New
Allied Private Wealth LLC3,795$39.7K0.03%+3,795New
McGuire Capital Advisors Inc4,215$44.6K0.02%+4,215New
Farther Finance Advisors, LLC4,437$46.9K0.00%+709+19.0%Added
Farmers & Merchants Trust Co of Chambersburg PA5,879$62.0K0.02%+5,879New
N.E.W. Advisory Services LLC6,000$63.4K0.00%00.0%Unchanged
Smallwood Wealth Investment Management, LLC6,486$68.6K0.03%+6,486New
Prosperity Bancshares Inc7,000$74.0K0.05%+5,000+250.0%Added
Intellus Advisors LLC10,000$105.7K0.01%00.0%Unchanged
National Asset Management, Inc.10,064$106.0K0.01%+10,064New
Cito Capital Group, LLC10,000$106.0K0.03%00.0%Unchanged
Spire Wealth Management10,041$106.1K0.00%−2,542−20.2%Reduced
Independent Financial Group, LLC10,063$106.4K0.00%00.0%Unchanged
MAI Capital Management10,150$107.3K0.00%+1,210+13.5%Added
Kennedy Investment Group10,173$107.5K0.04%+10,173New
Van Hulzen Asset Management, LLC10,312$109.0K0.01%00.0%Unchanged
Berkeley Capital Partners, LLC10,475$110.7K0.02%−1,098−9.5%Reduced
GenWealth Group, Inc.10,957$115.8K0.02%+10,957New
Principle Wealth Partners LLC11,000$116.3K0.01%00.0%Unchanged
Trustmark National Bank Trust Department11,000$116.3K0.01%+11,000New
Key Client Fiduciary Advisors, LLC11,050$116.8K0.03%+11,050New
Indivisible Partners11,051$116.8K0.01%+11,051New
Horizon Kinetics Asset Management LLC11,125$117.6K0.00%+756+7.3%Added
Sigma Planning Corp11,411$120.6K0.00%+810+7.6%Added
Global Retirement Partners, LLC11,489$121.4K0.00%+11,489New
Sovereign Financial Group, Inc.11,736$124.1K0.02%+11,736New
Ramiah Investment Group11,782$124.5K0.10%+754+6.8%Added
Value Investment Professionals, LLC12,016$127.0K0.11%+12,016New
Savant Capital, LLC12,430$130.2K0.00%+12,430New
AlphaCore Capital LLC12,243$130.2K0.00%+232+1.9%Added
Tiaa-Cref Individual & Institutional Services, LLC12,325$130.3K0.00%+12,325New
Wedbush Securities Inc12,410$131.0K0.00%−16,450−57.0%Reduced
Walker Asset Management, LLC12,462$131.7K0.07%+12,462New
Bank of New York Mellon Corp12,463$131.7K0.00%+12,463New
Thrivent Financial for Lutherans12,530$132.0K0.00%00.0%Unchanged
Penserra Capital Management LLC12,502$132.0K0.00%+11,104+794.3%Added
Independent Wealth Network Inc.12,571$132.9K0.03%+12,571New
Integrated Wealth Concepts LLC12,728$134.5K0.00%+12,728New
Wealth Management Associates, Inc.12,858$135.9K0.04%+12,858New
Two Sigma Securities, LLC13,087$138.3K0.01%+13,087New
Great Valley Advisor Group, Inc.13,177$139.3K0.00%+13,177New
Concurrent Investment Advisors, LLC13,268$140.2K0.00%+1,304+10.9%Added
Sage Capital Management, LLC13,376$141.4K0.06%+2,876+27.4%Added
Blueline Advisors LLC13,593$144.3K0.10%+4,279+45.9%Added
SRS Capital Advisors, Inc.13,916$147.1K0.00%+9,990+254.5%Added
Green Ridge Wealth Planning LLC13,924$147.2K0.06%+13,924New
AQR Capital Management LLC14,137$149.4K0.00%+14,137New
Ambassador Advisors, LLC14,304$151.2K0.02%+14,304New
Tyche Wealth Partners LLC14,349$151.7K0.02%00.0%Unchanged
Cane Capital Partners, LLC14,400$152.2K0.06%00.0%Unchanged
Diversify Wealth Management, LLC15,000$153.3K0.00%00.0%Unchanged
Diversify Advisory Services, LLC15,000$153.3K0.00%+15,000New
Arkadios Wealth Advisors14,692$155.3K0.00%+14,692New
Smith Chas P & Associates Pa Cpas14,700$155.4K0.01%+2,900+24.6%Added
Sanibel Captiva Trust Company, Inc.15,000$158.6K0.00%00.0%Unchanged
Abel Hall, LLC15,000$158.6K0.03%00.0%Unchanged
Pacitti Group Inc.15,048$159.1K0.05%00.0%Unchanged
US Bancorp15,108$159.7K0.00%+12,108+403.6%Added
Closed-End Fund Advisors, Inc.15,275$161.5K0.16%+15,275New
Joel Isaacson & Co., LLC15,281$161.5K0.00%+15,281New
Virtu Financial LLC15,343$162.0K0.01%+15,343New
David J Yvars Group15,508$163.9K0.08%+15,508New
Outlook Wealth Advisors, LLC15,832$167.3K0.04%−1,145−6.7%Reduced
Grimes & Company, Inc.16,671$176.2K0.00%+16,671New
FF Advisors,LLC16,905$178.7K0.07%−3,214−16.0%Reduced
Stratos Wealth Partners, LTD.17,269$182.5K0.00%+2,793+19.3%Added
LexAurum Advisors, LLC17,641$186.5K0.02%+498+2.9%Added
Nelson, Van Denburg & Campbell Wealth Management Group, LLC17,825$188.4K0.00%00.0%Unchanged
Cary Street Partners Financial LLC18,496$195.5K0.00%+18,496New
Pine Valley Investments Ltd Liability Co18,958$201.4K0.01%+18,958New
Regal Investment Advisors LLC19,067$201.5K0.01%+19,067New
Snowden Capital Advisors LLC19,140$203.6K0.00%+8,849+86.0%Added
MML Investors Services, LLC19,645$207.6K0.00%+19,645New
Fragasso Group Inc.20,190$213.4K0.01%+20,190New
Boothbay Fund Management, LLC20,289$214.5K0.00%+7,007+52.8%Added
Dynamic Advisor Solutions LLC20,299$214.6K0.01%+5,133+33.8%Added
Haverford Trust Co20,362$215.2K0.00%+20,362New
Krilogy Financial LLC22,434$237.1K0.01%+22,434New