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NMZ

Nuveen Municipal High Income Opportunity Fund
$10.53 -0.01 (-0.09%) At close · Jul 2
Market Cap
$1.24B
Shares
117,500,107

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 138
Total Value: $208,351,179
Total Shares: 20,071,769
Showing 1–100 of 138 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 138 13F filers
Top Holder
13.3%
Jun 2023 → Mar 2026 · range 12.6% – 16.3%
of institutional value
Top 5
46.8%
Jun 2023 → Mar 2026 · range 39.3% – 47.5%
of institutional value
Top 10
63.6%
Jun 2023 → Mar 2026 · range 54.1% – 65.3%
of institutional value
HHI
560
Jun 2023 → Mar 2026 · range 448 – 648
Broadly held
Showing 100 of 138
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega MORGAN STANLEY $27,670,297 13.28% 2,665,732
Large GUGGENHEIM CAPITAL LLC $21,210,886 10.18% 2,043,438
Mega UBS Group AG $19,926,517 9.56% 1,919,703
Mid Hennion & Walsh Asset Management, Inc. $17,013,878 8.17% 1,639,102
Mega RAYMOND JAMES FINANCIAL INC $11,625,204 5.58% 1,119,962
Mega WELLS FARGO & COMPANY/MN $9,120,593 4.38% 878,670
Mega LPL Financial LLC $7,931,056 3.81% 764,071
Mega VAN ECK ASSOCIATES CORP $6,999,067 3.36% 674,284
Micro Melone Private Wealth, LLC $6,981,816 3.35% 672,622
Large Cetera Investment Advisers $4,127,347 1.98% 397,625
Mega BANK OF AMERICA CORP /DE/ Bank $4,039,885 1.94% 389,199
Large NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO $3,535,645 1.70% 340,621
Small ROBINSON CAPITAL MANAGEMENT, LLC $3,453,156 1.66% 332,674
Micro Gridiron Partners, LLC $3,319,887 1.59% 319,835
Mega ROYAL BANK OF CANADA Bank $2,880,626 1.38% 277,517
Mid Advisors Asset Management, Inc. $2,723,649 1.31% 262,394
Large STIFEL FINANCIAL CORP $2,708,308 1.30% 260,916
Large OSAIC HOLDINGS, INC. $2,303,218 1.11% 221,890
Large COMMONWEALTH EQUITY SERVICES, LLC $2,284,316 1.10% 220,069
Mid OneDigital Investment Advisors LLC $1,935,724 0.93% 186,486
Small Platform Technology Partners $1,798,179 0.86% 173,235
Large Kestra Advisory Services, LLC $1,781,187 0.85% 171,598
Large Mariner, LLC $1,657,426 0.80% 159,675
Mid AE Wealth Management LLC $1,648,925 0.79% 158,856
Large Baird Financial Group, Inc. $1,635,483 0.78% 157,561
Small High Net Worth Advisory Group LLC $1,455,940 0.70% 140,264
Large TRUIST FINANCIAL CORP $1,442,757 0.69% 138,994
Small Palogic Value Management, L.P. $1,383,135 0.66% 133,250
Large Rockefeller Capital Management L.P. $1,362,136 0.65% 131,227
Mid PFG Investments, LLC $1,325,692 0.64% 127,716
Small HighPoint Advisor Group LLC $1,299,513 0.62% 125,194
Large Cerity Partners LLC $1,225,701 0.59% 118,083
Small Ellis Investment Partners, LLC $1,156,612 0.56% 111,427
Micro MFA Wealth Services $1,137,087 0.55% 109,546
Small Wakefield Asset Management LLLP $1,056,922 0.51% 101,823
Large &PARTNERS $969,751 0.47% 93,425
Mega AMERIPRISE FINANCIAL INC $945,732 0.45% 91,111
Small Ausdal Financial Partners, Inc. $879,341 0.42% 84,715
Small TCP Asset Management, LLC $869,792 0.42% 83,795
Large Cambridge Investment Research Advisors, Inc. $850,630 0.41% 81,949
Mega ENVESTNET ASSET MANAGEMENT INC $847,018 0.41% 81,601
Small Camelot Portfolios, LLC $756,214 0.36% 72,853
Micro WESPAC Advisors, LLC $753,619 0.36% 72,603
Micro Worthington Financial Partners, LLC $729,205 0.35% 70,251
Mid Venture Visionary Partners LLC $728,582 0.35% 70,191
Micro EQ WEALTH ADVISORS, LLC $683,896 0.33% 65,886
Mid Private Advisor Group, LLC $563,260 0.27% 54,264
Mid YHB Investment Advisors, Inc. $550,710 0.26% 53,055
Mid XTX Topco Ltd $512,045 0.25% 49,330
Mid Traynor Capital Management, Inc. $467,940 0.22% 45,081
Small Core Wealth Partners LLC $462,563 0.22% 44,563
Small SMITH, MOORE & CO. $444,253 0.21% 42,799
Large NewEdge Advisors, LLC $431,372 0.21% 41,558
Mega JANE STREET GROUP, LLC $427,718 0.21% 41,206
Mid HARBOUR INVESTMENTS, INC. $426,420 0.20% 41,081
Mid Mutual Advisors, LLC $425,766 0.20% 41,018
Small CLIFTONLARSONALLEN WEALTH ADVISORS, LLC $398,778 0.19% 38,418
Large Janney Montgomery Scott LLC $381,288 0.18% 36,733
Large Focus Partners Wealth $365,677 0.18% 35,229
Small IBEX WEALTH ADVISORS $350,210 0.17% 33,739
Small Noble Wealth Management PBC $349,042 0.17% 33,022
Micro Everstar Asset Management, LLC $347,460 0.17% 33,474
Mid Capital Investment Advisors, LLC $316,475 0.15% 30,489
Mid WEDBUSH SECURITIES INC Broker-Dealer $299,566 0.14% 28,860
Mid MGO ONE SEVEN LLC $285,076 0.14% 27,464
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $277,530 0.13% 26,737
Mid Ashton Thomas Private Wealth, LLC $274,935 0.13% 26,487
Small Plan Group Financial, LLC $260,683 0.13% 25,114
Large FIFTH THIRD BANCORP Bank $239,663 0.12% 23,089
Small DUNCKER STREETT & CO INC $237,702 0.11% 22,900
Small Signal Advisors Wealth, LLC $235,605 0.11% 22,698
Small Secure Asset Management, LLC $234,484 0.11% 22,590
Mid OPPENHEIMER & CO INC $213,661 0.10% 20,584
Large Creative Planning $212,592 0.10% 20,481
Micro FF Advisors,LLC $208,835 0.10% 20,119
Small MELFA WEALTH MANAGEMENT, INC. $205,544 0.10% 19,802
Small Avior Wealth Management, LLC $185,023 0.09% 17,825
Small Kercheville Advisors, LLC $182,470 0.09% 17,579
Small HBK Sorce Advisory LLC $182,366 0.09% 17,569
Small LexAurum Advisors, LLC $177,944 0.09% 17,143
Small Outlook Wealth Advisors, LLC $176,221 0.08% 16,977
Large Steward Partners Investment Advisory, LLC $162,914 0.08% 15,695
Mid Dynamic Advisor Solutions LLC $157,423 0.08% 15,166
Small Ranch Capital Advisors Inc. $156,198 0.07% 15,048
Mid DIVERSIFY WEALTH MANAGEMENT, LLC $155,700 0.07% 15,000
Small Abel Hall, LLC $155,700 0.07% 15,000
Mid Florida Trust Wealth Management Co $155,700 0.07% 15,000
Mid Stratos Wealth Partners, LTD. $150,260 0.07% 14,476
Small Cane Capital Partners, LLC $149,472 0.07% 14,400
Small Tyche Wealth Partners LLC $148,942 0.07% 14,349
Mega CITADEL ADVISORS LLC $144,188 0.07% 13,891
Mid BOOTHBAY FUND MANAGEMENT, LLC $137,867 0.07% 13,282
Small XML Financial, LLC $131,826 0.06% 12,700
Mid Spire Wealth Management $130,611 0.06% 12,583
Large Thrivent Financial for Lutherans $130,061 0.06% 12,530
Mid AlphaCore Capital LLC $124,674 0.06% 12,011
Mid Concurrent Investment Advisors, LLC $124,186 0.06% 11,964
Mid D.A. DAVIDSON & CO. $123,833 0.06% 11,930
Mid SMITH CHAS P & ASSOCIATES PA CPAS $122,484 0.06% 11,800
Small Berkeley Capital Partners, LLC $120,127 0.06% 11,573
Key facts CIK 1266585 CUSIP 670682103 13F (30d) 3 filings 2 filers Visit website

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