NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NMZ) — Institutional Holders, Q2 2026
213 institutional investment managers reported a NMZ position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $358.6M. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
NMZ in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- SIT INVESTMENT ASSOCIATESNew · +2,336,943 sh+$24.7M
- WELLS FARGO & COMPANYAdded · +1,480,618 sh+$15.7M
- RIVERNORTH CAPITAL MANAGEMENTNew · +1,049,891 sh+$11.1M
- J.W. COLE ADVISORSNew · +1,023,649 sh+$10.8M
- RAYMOND JAMES FINANCIALAdded · +810,274 sh+$8.6M
Biggest sellers
- UBS Group AGTrimmed · -388,040 sh-$4.1M
- ROBINSON CAPITAL MANAGEMENTSold out · -332,674 sh-$3.5M
- Gridiron PartnersTrimmed · -218,213 sh-$2.3M
- STIFEL FINANCIALTrimmed · -109,892 sh-$1.2M
- MarinerTrimmed · -106,540 sh-$1.1M
NMZ 13F holders ranked 1–100 of 213
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | MORGAN STANLEY#1 · 3,168,046 sh | 3,168,046 | $33.5M | <0.01% | +18.8% |
| 2 | GUGGENHEIM CAPITAL#2 · 2,376,749 sh | 2,376,749 | $25.1M | 0.16% | +16.3% |
| 3 | WELLS FARGO & COMPANY#3 · 2,359,288 sh | 2,359,288 | $24.9M | <0.01% | +168.5% |
| 4 | SIT INVESTMENT ASSOCIATES#4 · 2,336,943 sh | 2,336,943 | $24.7M | 0.47% | New |
| 5 | Hennion & Walsh Asset Management#5 · 2,217,036 sh | 2,217,036 | $23.4M | — | +35.3% |
| 6 | RAYMOND JAMES FINANCIAL#6 · 1,930,236 sh | 1,930,236 | $20.4M | <0.01% | +72.3% |
| 7 | UBS Group AG#7 · 1,531,663 sh | 1,531,663 | $16.2M | <0.01% | -20.2% |
| 8 | BANK OF AMERICA#8 · 1,112,841 sh | 1,112,841 | $11.8M | <0.01% | +185.9% |
| 9 | LPL Financial#9 · 1,080,405 sh | 1,080,405 | $11.4M | <0.01% | +41.4% |
| 10 | VAN ECK ASSOCIATES#10 · 1,056,439 sh | 1,056,439 | $11.2M | <0.01% | +56.7% |
| 11 | RIVERNORTH CAPITAL MANAGEMENT#11 · 1,049,891 sh | 1,049,891 | $11.1M | 0.53% | New |
| 12 | J.W. COLE ADVISORS#12 · 1,023,649 sh | 1,023,649 | $10.8M | 0.19% | New |
| 13 | Cetera Investment Advisers#13 · 1,002,529 sh | 1,002,529 | $10.6M | <0.01% | +152.1% |
| 14 | Melone Private Wealth#14 · 846,287 sh | 846,287 | $8.9M | — | +25.8% |
| 15 | Rockefeller Capital Management L.P.#15 · 592,054 sh | 592,054 | $6.3M | <0.01% | +351.2% |
| 16 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT#16 · 516,095 sh | 516,095 | $5.5M | <0.01% | +51.5% |
| 17 | ROYAL BANK OF CANADA#17 · 450,516 sh | 450,516 | $4.8M | <0.01% | +62.3% |
| 18 | COMMONWEALTH EQUITY SERVICES#18 · 446,955 sh | 446,955 | $4.7M | <0.01% | +103.1% |
| 19 | OSAIC#19 · 311,793 sh | 311,793 | $3.3M | <0.01% | +40.5% |
| 20 | Advisors Asset Management#20 · 271,945 sh | 271,945 | $2.9M | 0.04% | +3.6% |
| 21 | HighTower Advisors#21 · 265,084 sh | 265,084 | $2.8M | <0.01% | New |
| 22 | Janney Montgomery Scott#22 · 220,498 sh | 220,498 | $2.3M | <0.01% | +500.3% |
| 23 | Baird Financial Group#23 · 217,064 sh | 217,064 | $2.3M | <0.01% | +37.8% |
| 24 | Platform Technology Partners#24 · 193,277 sh | 193,277 | $2.0M | 0.33% | +11.6% |
| 25 | Kestra Advisory Services#25 · 189,986 sh | 189,986 | $2.0M | <0.01% | +10.7% |
| 26 | OneDigital Investment Advisors#26 · 187,628 sh | 187,628 | $2.0M | 0.02% | +0.6% |
| 27 | AE Wealth Management#27 · 172,917 sh | 172,917 | $1.8M | <0.01% | +8.9% |
| 28 | Equitable#28 · 170,091 sh | 170,091 | $1.8M | <0.01% | New |
| 29 | FIFTH THIRD BANCORP#29 · 168,093 sh | 168,093 | $1.8M | <0.01% | +628.0% |
| 30 | NewEdge Advisors#30 · 165,408 sh | 165,408 | $1.7M | <0.01% | +298.0% |
| 31 | STIFEL FINANCIAL#31 · 151,024 sh | 151,024 | $1.6M | <0.01% | -42.1% |
| 32 | HighPoint Advisor Group#32 · 148,159 sh | 148,159 | $1.6M | 0.06% | +18.3% |
| 33 | Cambridge Investment Research Advisors#33 · 143,340 sh | 143,340 | $1.5M | <0.01% | +74.9% |
| 34 | PFG Investments#34 · 141,199 sh | 141,199 | $1.5M | 0.06% | +10.6% |
| 35 | Ellis Investment Partners#35 · 139,381 sh | 139,381 | $1.5M | — | +25.1% |
| 36 | TRUIST FINANCIAL#36 · 136,648 sh | 136,648 | $1.4M | <0.01% | -1.7% |
| 37 | High Net Worth Advisory Group#37 · 136,345 sh | 136,345 | $1.4M | — | -2.8% |
| 38 | BCS Private Wealth Management#38 · 134,954 sh | 134,954 | $1.4M | 0.43% | New |
| 39 | Palogic Value Management, L.P.#39 · 135,750 sh | 135,750 | $1.4M | 0.47% | +1.9% |
| 40 | Kingsview Wealth Management#40 · 124,142 sh | 124,142 | $1.3M | 0.02% | New |
| 41 | Cerity Partners#41 · 117,347 sh | 117,347 | $1.2M | <0.01% | -0.6% |
| 42 | AMERIPRISE FINANCIAL#42 · 116,078 sh | 116,078 | $1.2M | <0.01% | +27.4% |
| 43 | Wakefield Asset Management LLLP#43 · 115,718 sh | 115,718 | $1.2M | 0.28% | +13.6% |
| 44 | Breakwater Capital Group#44 · 110,775 sh | 110,775 | $1.2M | — | New |
| 45 | Private Advisor Group#45 · 110,215 sh | 110,215 | $1.2M | <0.01% | +103.1% |
| 46 | Gridiron Partners#46 · 101,622 sh | 101,622 | $1.1M | — | -68.2% |
| 47 | Focus Partners Wealth#47 · 97,723 sh | 97,723 | $1.0M | <0.01% | +177.4% |
| 48 | WILEY BROS.-AINTREE CAPITAL#48 · 97,221 sh | 97,221 | $1.0M | <0.01% | +4.1% |
| 49 | MFA Wealth Services#49 · 95,615 sh | 95,615 | $1.0M | — | -12.7% |
| 50 | Venture Visionary Partners#50 · 92,581 sh | 92,581 | $978.6K | — | +31.9% |
| 51 | North Ground Capital#51 · 89,600 sh | 89,600 | $947.1K | 1.14% | New |
| 52 | Ausdal Financial Partners#52 · 88,855 sh | 88,855 | $939.8K | 0.04% | +4.9% |
| 53 | ENVESTNET ASSET MANAGEMENT#53 · 85,443 sh | 85,443 | $903.1K | <0.01% | +4.7% |
| 54 | YHB Investment Advisors#54 · 82,213 sh | 82,213 | $869.0K | — | +55.0% |
| 55 | JANE STREET GROUP#55 · 80,144 sh | 80,144 | $847.1K | <0.01% | +94.5% |
| 56 | Thompson David Blair#56 · 79,703 sh | 79,703 | $842.5K | 0.42% | -15.4% |
| 57 | TCP Asset Management#57 · 77,231 sh | 77,231 | $816.3K | — | -7.8% |
| 58 | PNC FINANCIAL SERVICES GROUP#58 · 76,640 sh | 76,640 | $810.1K | <0.01% | New |
| 59 | Mutual Advisors#59 · 73,760 sh | 73,760 | $779.6K | 0.01% | +79.8% |
| 60 | WESPAC Advisors#60 · 72,603 sh | 72,603 | $767.4K | — | 0.0% |
| 61 | Worthington Financial Partners#61 · 70,330 sh | 70,330 | $743.4K | — | +0.1% |
| 62 | EQ WEALTH ADVISORS#62 · 70,022 sh | 70,022 | $740.1K | 0.41% | +6.3% |
| 63 | CAPTRUST FINANCIAL ADVISORS#63 · 69,119 sh | 69,119 | $730.6K | <0.01% | New |
| 64 | Camelot Portfolios#64 · 67,263 sh | 67,263 | $711.0K | 0.50% | -7.7% |
| 65 | Wealthcare Advisory Partners#65 · 62,179 sh | 62,179 | $657.2K | — | New |
| 66 | SMITH, MOORE#66 · 59,977 sh | 59,977 | $634.0K | 0.04% | +40.1% |
| 67 | Steward Partners Investment Advisory#67 · 58,059 sh | 58,059 | $613.7K | <0.01% | +269.9% |
| 68 | Mariner#68 · 53,135 sh | 53,135 | $561.6K | <0.01% | -66.7% |
| 69 | EVOLVE PRIVATE WEALTH#69 · 52,207 sh | 52,207 | $555.3K | 0.03% | New |
| 70 | OPPENHEIMER#70 · 51,878 sh | 51,878 | $548.4K | — | +152.0% |
| 71 | Traynor Capital Management#71 · 45,229 sh | 45,229 | $478.1K | 0.02% | +0.3% |
| 72 | Core Wealth Partners#72 · 44,599 sh | 44,599 | $471.4K | 0.20% | +0.1% |
| 73 | Secure Asset Management#73 · 42,190 sh | 42,190 | $445.9K | — | +86.8% |
| 74 | MELFA WEALTH MANAGEMENT#74 · 41,574 sh | 41,574 | $439.4K | 0.24% | +109.9% |
| 75 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#75 · 41,492 sh | 41,492 | $438.6K | 0.00% | +55.2% |
| 76 | HARBOUR INVESTMENTS#76 · 41,081 sh | 41,081 | $434.2K | <0.01% | 0.0% |
| 77 | NATIONS FINANCIAL GROUP , /IA#77 · 39,327 sh | 39,327 | $415.7K | 0.02% | New |
| 78 | Merit Financial Group#78 · 39,244 sh | 39,244 | $414.8K | <0.01% | +265.9% |
| 79 | WEST CHESTER CAPITAL ADVISORS#79 · 39,137 sh | 39,137 | $413.7K | — | New |
| 80 | CLIFTONLARSONALLEN WEALTH ADVISORS#80 · 38,418 sh | 38,418 | $406.1K | — | 0.0% |
| 81 | WEALTH EFFECTS#81 · 37,898 sh | 37,898 | $400.6K | — | New |
| 82 | Everstar Asset Management#82 · 37,529 sh | 37,529 | $396.7K | 0.19% | +12.1% |
| 83 | IBEX WEALTH ADVISORS#83 · 37,521 sh | 37,521 | $396.6K | 0.03% | +11.2% |
| 84 | Ashton Thomas Private Wealth#84 · 34,487 sh | 34,487 | $364.5K | <0.01% | +30.2% |
| 85 | Signal Advisors Wealth#85 · 33,752 sh | 33,752 | $356.8K | — | +48.7% |
| 86 | Noble Wealth Management PBC#86 · 33,022 sh | 33,022 | $349.0K | — | -1.9% |
| 87 | Compound Planning#87 · 32,452 sh | 32,452 | $343.0K | <0.01% | New |
| 88 | RMR Wealth Builders#88 · 31,182 sh | 31,182 | $331.6K | — | New |
| 89 | Aviance Capital Partners#89 · 31,123 sh | 31,123 | $329.0K | 0.03% | New |
| 90 | NCM Capital Management#90 · 30,451 sh | 30,451 | $321.9K | 0.10% | New |
| 91 | Capital Investment Advisors#91 · 30,374 sh | 30,374 | $321.1K | — | -0.4% |
| 92 | SYKON CAPITAL#92 · 30,271 sh | 30,271 | $320.0K | 0.10% | New |
| 93 | Kercheville Advisors#93 · 29,364 sh | 29,364 | $310.4K | — | +67.0% |
| 94 | Creative Planning#94 · 29,062 sh | 29,062 | $307.2K | <0.01% | +41.9% |
| 95 | Alpine Global Management#95 · 28,980 sh | 28,980 | $306.3K | 0.05% | New |
| 96 | MGO ONE SEVEN#96 · 28,620 sh | 28,620 | $302.5K | <0.01% | +4.2% |
| 97 | Ethos Financial Group#97 · 28,583 sh | 28,583 | $294.0K | 0.02% | New |
| 98 | PEAPACK GLADSTONE FINANCIAL#98 · 27,767 sh | 27,767 | $293.0K | <0.01% | New |
| 99 | Johnson & White Wealth Management#99 · 26,941 sh | 26,941 | $284.8K | 0.11% | New |
| 100 | Focus Partners Advisor Solutions#100 · 26,937 sh | 26,937 | $284.7K | <0.01% | New |
Funds that sold out of NMZ in Q2 2026 (13)
Held NMZ at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| ROBINSON CAPITAL MANAGEMENT332,674 sh | 332,674 | $3.4M |
| HBK Sorce Advisory17,569 sh | 17,569 | $180.1K |
| CITADEL ADVISORS13,891 sh | 13,891 | $144.2K |
| D.A. DAVIDSON11,930 sh | 11,930 | $123.8K |
| Focus Financial Network10,484 sh | 10,484 | $109.5K |
| Garton & Associates Financial Advisors10,262 sh | 10,262 | $106.5K |
| Allworth Financial8,500 sh | 8,500 | $88.2K |
| Advisory Services Network7,443 sh | 7,443 | $77.3K |
| Arkos Global Advisors3,090 sh | 3,090 | $32.0K |
| HUNTINGTON NATIONAL BANK2,266 sh | 2,266 | $23.5K |
| Sound Income Strategies1,131 sh | 1,131 | $11.7K |
| Nova Wealth Management925 sh | 925 | $9.6K |
| Tower Research Capital (TRC)42 sh | 42 | $436.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.