NMZNYSE
NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
$9.03−0.10 (-1.10%)
Close on Oct 19, 2026
- Market cap
- –
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
34M
Shares held, 13F filers
Institutional holders
212
88 new, 12 sold out
Net institutional buying
14M
In Q2 2026
Insider trades, 12 months
10 buys · 11 sales
Net sold $29.35K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Wells Fargo & Company | 6,204 | 76.84% | 13D (active) amendment | Apr 27, 2026 |
| Bank Of America Corp /De/ | 1,870 | 23.20% | 13D (active) amendment | Apr 27, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of NMZ | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Morgan Stanley | 3,168,046 | – | $33.49M | +502,314 | 0.00% |
| Guggenheim Capital LLC | 2,376,749 | – | $25.12M | +333,311 | 0.16% |
| Wells Fargo & Company/Mn | 2,359,288 | – | $24.94M | +1,480,618 | 0.00% |
| Sit Investment Associates Inc | 2,336,943 | – | $24.70K | New | 0.47% |
| Hennion & Walsh Asset Management, Inc. | 2,217,036 | – | $23.43M | +577,934 | 0.67% |
| Raymond James Financial Inc | 1,930,236 | – | $20.40M | +810,274 | 0.01% |
| UBS Group AG | 1,531,663 | – | $16.19M | −388,040 | 0.00% |
| Bank Of America Corp /De/ | 1,112,841 | – | $11.76M | +723,642 | 0.00% |
| LPL Financial LLC | 1,080,405 | – | $11.42M | +316,334 | 0.00% |
| Van Eck Associates Corp | 1,056,439 | – | $11.17M | +382,155 | 0.01% |
| Rivernorth Capital Management, LLC | 1,049,891 | – | $11.10M | New | 0.53% |
| J.W. Cole Advisors, Inc. | 1,023,649 | – | $10.82M | New | 0.19% |
| Cetera Investment Advisers | 1,002,529 | – | $10.60M | +604,904 | 0.01% |
| Melone Private Wealth, LLC | 846,287 | – | $8.95M | +173,665 | 3.41% |
| Rockefeller Capital Management L.P. | 592,054 | – | $6.26M | +460,827 | 0.01% |
| Northwestern Mutual Wealth Management Co | 516,095 | – | $5.46M | +175,474 | 0.00% |
| Royal Bank of Canada | 450,516 | – | $4.76M | +172,999 | 0.00% |
| Commonwealth Equity Services, LLC | 446,955 | – | $4.72M | +226,886 | 0.01% |
| Osaic Holdings, Inc. | 311,793 | – | $3.30M | +89,903 | 0.00% |
| Cambridge Investment Research Advisors, Inc. | 286,680 | – | $3.03K | +204,731 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|
| Q2 2026 | 212 | 34M | 88 / 80 | 20 / 12 | 15M | 1M |
| Q1 2026 | 138 | 20M | 22 / 60 | 22 / 11 | 2M | 1M |
| Q4 2025 | 131 | 19M | 25 / 39 | 41 / 14 | 3M | 2M |
| Q3 2025 | 124 | 19M | 13 / 46 | 34 / 16 | 2M | 1M |
| Q2 2025 | 127 | 18M | 14 / 48 | 25 / 16 | 2M | 1M |
| Q1 2025 | 131 | 17M | 18 / 45 | 29 / 13 | 1M | 1M |
| Q4 2024 | 126 | 17M | 20 / 47 | 26 / 12 | 2M | 1M |
| Q3 2024 | 122 | 16M | 16 / 41 | 21 / 12 | 2M | 1M |
| Q2 2024 | 119 | 16M | 14 / 40 | 32 / 11 | 1M | 5M |
| Q1 2024 | 116 | 20M | 10 / 45 | 24 / 26 | 4M | 1M |
| Q4 2023 | 132 | 17M | 33 / 37 | 35 / 13 | 5M | 2M |
| Q3 2023 | 114 | 14M | 11 / 39 | 30 / 9 | 1M | 1M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of NMZ | Value | % of fund | As of |
|---|---|---|---|---|---|
| VanEck CEF Muni Income ETF | 1,080,272 | – | $10.98M | 5.00% | Jul 31, 2026 |
| Clearwater Tax-Exempt Bond Fund | 193,529 | – | $2.05M | 0.24% | Jun 30, 2026 |
| Amplify Municipal CEF High Income ETF | 12,502 | – | $132.15K | 10.88% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | Latest filing |
|---|---|---|---|
| William A. Siffermann | Vice President | 914 | Mar 6, 2026 |
| Joseph Castro | EVP, Chief Risk & Compliance | – | Feb 23, 2026 |
| Robert Tanner Page | VP and Treasurer | – | Nov 5, 2025 |
| Marc Cardella | VP and Controller | – | Dec 3, 2024 |
| Kristen Dejong | – | – | Sep 3, 2026 |
| Margot Kleinman | – | – | Sep 3, 2026 |
| Parth Doshi | – | – | Sep 1, 2026 |
| Of America Corp /De/ Bank | 10% owner | 6,440 | Aug 6, 2026 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. | 10% owner | 1 | Aug 6, 2026 |
| Albin F. Moschner | – | 4,524 | Jun 29, 2026 |
| Wells Fargo Municipal Capital Strategies, LLC | 10% owner | – | Apr 29, 2026 |
| Fargo & Company/Mn Wells | 10% owner | 4,504 | Apr 29, 2026 |
| of America Preferred Funding Corp Banc | 10% owner | 1,870 | Dec 15, 2025 |
| Bofa Securities, Inc. | 10% owner | – | Dec 13, 2024 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 4, 2026 | Sale | −1 | $10.32 | $10 | 1 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 4, 2026 | Sale | −1 | $10.24 | $10 | 2 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 4, 2026 | Buy | +1 | $10.18 | $10 | 3 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 4, 2026 | Buy | +1 | $10.19 | $10 | 2 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 4, 2026 | Sale | −1 | $10.23 | $10 | 0 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 4, 2026 | Buy | +1 | $10.19 | $10 | 1 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 3, 2026 | Buy | +14 | $10.21 | $143 | 21 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 3, 2026 | Sale | −10 | $10.23 | $102 | 5 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 3, 2026 | Buy | +7 | $10.20 | $71 | 7 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 3, 2026 | Buy | +10 | $10.21 | $102 | 31 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 3, 2026 | Sale | −14 | $10.24 | $143 | 15 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 3, 2026 | Sale | −7 | $10.32 | $72 | 29 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Aug 3, 2026 | Buy | +5 | $10.22 | $51 | 36 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Jul 31, 2026 | Sale | −5 | $10.33 | $52 | 0 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Jul 24, 2026 | Sale | −9 | $10.18 | $92 | 0 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Jul 24, 2026 | Buy | +9 | $10.24 | $92 | 9 |
| Albin F. Moschner – | Jun 22, 2026 | Sale | −1,100 | $10.35 | $11.39K | 736 |
| Albin F. Moschner – | Jun 22, 2026 | Sale | −1,812 | $10.37 | $18.79K | 3,788 |
| Fargo & Company/Mn Wells 10% owner | Apr 27, 2026 | Other | +4,504 | – | – | 4,504 |
| William A. Siffermann Vice President | Mar 5, 2026 | Buy | +100 | $10.48 | $1.05K | 914 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Dec 19, 2025 | Buy | +1,000 | $10.32 | $10.32K | 1,000 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Dec 19, 2025 | Sale | −1,000 | $10.54 | $10.54K | 0 |
| of America Preferred Funding Corp Banc 10% owner | Dec 11, 2025 | Other | +1,000 | – | – | 1,000 |
| of America Preferred Funding Corp Banc 10% owner | Dec 11, 2025 | Other | −1,000 | – | – | 870 |
| Of America Corp /De/ Bank 10% owner | Oct 10, 2025 | Buy | +6,440 | $10.56 | $68.01K | 6,440 |
| Of America Corp /De/ Bank 10% owner | Oct 10, 2025 | Sale | −6,440 | $10.64 | $68.52K | 0 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Oct 9, 2025 | Sale | −190 | $10.62 | $2.02K | 0 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Oct 9, 2025 | Buy | +190 | $10.62 | $2.02K | 190 |
| Of America Corp /De/ Bank 10% owner | Sep 17, 2025 | Sale | −10,784 | $10.56 | $113.88K | 0 |
| Of America Corp /De/ Bank 10% owner | Sep 17, 2025 | Buy | +10,784 | $10.65 | $114.85K | 10,784 |
| William A. Siffermann Vice President | Mar 21, 2025 | Buy | +300 | $11.08 | $3.32K | 610 |
| Of America Corp /De/ Bank 10% owner | Jan 15, 2025 | Sale | −5 | $10.94 | $55 | 0 |
| Of America Corp /De/ Bank 10% owner | Jan 15, 2025 | Sale | −1 | $10.96 | $11 | 5 |
| Of America Corp /De/ Bank 10% owner | Jan 15, 2025 | Buy | +5 | $10.79 | $54 | 6 |
| Of America Corp /De/ Bank 10% owner | Jan 15, 2025 | Buy | +1 | $10.79 | $11 | 1 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Dec 3, 2024 | Buy | +75 | $11.55 | $866 | 75 |
| Merrill Lynch, Pierce, Fenner & Smith Inc. 10% owner | Dec 3, 2024 | Sale | −75 | $11.54 | $865 | 0 |
| Nathaniel T. Jones Vice President and Treasurer | Oct 26, 2023 | Buy | +1,100 | $8.33 | $9.16K | 1,100 |
| Terence J. Toth Trustee | Oct 25, 2023 | Sale | −5 | $8.51 | $43 | 4,203 |
| Terence J. Toth Trustee | Oct 25, 2023 | Sale | −100 | $8.51 | $851 | 4,097 |
| Terence J. Toth Trustee | Oct 25, 2023 | Sale | −500 | $8.50 | $4.25K | 3,597 |
| Terence J. Toth Trustee | Oct 25, 2023 | Sale | −3,597 | $8.50 | $30.57K | 0 |
| Terence J. Toth Trustee | Oct 25, 2023 | Sale | −6 | $8.51 | $51 | 4,197 |
| Albin F. Moschner – | Aug 10, 2023 | Buy | +4,100 | $10.38 | $42.56K | 5,600 |
| Albin F. Moschner – | Aug 10, 2023 | Buy | +800 | $10.40 | $8.32K | 800 |
| Bank Ag\ Deutsche 10% owner | Apr 24, 2023 | Other | −1,000 | – | – | 0 |
| of America Preferred Funding Corp Banc 10% owner | Apr 24, 2023 | Other | +1,000 | – | – | 1,870 |
| Bank Ag\ Deutsche 10% owner | Apr 3, 2023 | Other | −1,700 | – | – | 1,000 |
| Terence J. Toth Trustee | Nov 28, 2022 | Buy | +1,015 | $10.97 | $11.13K | 4,208 |
| Terence J. Toth Trustee | Nov 28, 2022 | Buy | +1,355 | $10.97 | $14.86K | 3,193 |
| Municipal Holdings LLC DB 10% owner | Jun 9, 2022 | Other | +1,000 | – | – | 2,700 |
| Albin F. Moschner – | May 26, 2022 | Buy | +1,500 | $12.33 | $18.50K | 1,500 |
| William A. Siffermann Vice President | Nov 15, 2018 | Buy | +150 | $11.83 | $1.77K | 310 |
| of America Preferred Funding Corp Banc 10% owner | Feb 26, 2018 | Other | +870 | – | – | 870 |
| of America Preferred Funding Corp Banc 10% owner | Feb 26, 2018 | Other | −870 | – | – | 0 |
| Terence J. Toth Trustee | Aug 8, 2017 | Buy | +638 | $13.59 | $8.67K | 1,838 |
| Terence J. Toth Trustee | Aug 8, 2017 | Buy | +1,200 | $13.60 | $16.32K | 1,200 |
| Nuveen Fund Advisors, LLC – | May 18, 2017 | Sale | −6,794 | $13.32 | $90.50K | 0 |
| William J. Schneider – | Dec 7, 2016 | Sale | −14,900 | $12.92 | $192.51K | 0 |
| Of America Corp /De/ Bank 10% owner | Nov 8, 2016 | Sale | −100 | $13.53 | $1.35K | 5,700 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.