NMZ · NYSE · Closed-end fund
Nuveen Municipal High Income Opportunity Fund (NMZ) Price, Holdings & Fees
Nuveen Municipal High Income Opportunity Fund (NMZ) closed at $584.54 on Oct 9, 2026, down 1.02% from the previous close of $590.59.
Share price, past year
1Y +23.86%Monthly closing prices
| Date | Close |
|---|---|
| Oct 9, 2026 | $584.54 |
| Sep 30, 2026 | $575.65 |
| Aug 31, 2026 | $564.17 |
| Jul 31, 2026 | $535.27 |
| Jun 30, 2026 | $515.87 |
| May 29, 2026 | $497.87 |
| Apr 30, 2026 | $487.07 |
| Mar 31, 2026 | $516.44 |
| Feb 27, 2026 | $495.93 |
| Jan 30, 2026 | $483.87 |
| Dec 31, 2025 | $488.77 |
| Nov 28, 2025 | $481.88 |
| Oct 31, 2025 | $460.61 |
Key statistics
- Expense ratio
- —
- Net assets
- $2.2B
- as of Jul 31, 2026
- Holdings
- 1,464
- as of Jul 31, 2026
- 52-week range
- $458.40 – $593.45
Holdings
Nuveen Municipal High Income Opportunity Fund held 1,464 investments worth $2.19B as of Jul 31, 2026. Its largest holding was Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Restructured 2018A-1, at 1.93% of the fund.
| # | Holding | % of fund | Value |
|---|---|---|---|
| 1 | Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Restructured 2018A-1 | 1.93% | $42.15M |
| 2 | New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Refunding Series 2006C | 1.35% | $29.62M |
| 3 | New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Refunding Series 2006C | 1.33% | $29.16M |
| 4 | New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Refunding Series 2006C | 1.27% | $27.74M |
| 5 | New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Capital Appreciation Series 2010A | 1.23% | $26.94M |
| 6 | State Public School Building Authority, Pennsylvania, Lease Revenue Bonds, Philadelphia School District, Series 2003 | 1.00% | $21.94M |
| 7 | Metropolitan Pier and Exposition Authority, Illinois, McCormick Place Expansion Project Bonds, Refunding Series 2020A | 0.92% | $20.07M |
| 8 | New York Transportation Development Corporation, New York, Special Facilities Bonds, LaGuardia Airport Terminal B Redevelopment Project, Series 2016A | 0.91% | $19.97M |
| 9 | Iowa Finance Authority, Iowa, Midwestern Disaster Area Revenue Bonds, Iowa Fertilizer Company Project, Refunding Series 2022 | 0.91% | $19.92M |
| 10 | Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Taxable Restructured Cofina Project Series 2019A-2 | 0.88% | $19.29M |
| 11 | Buckeye Tobacco Settlement Financing Authority, Ohio, Tobacco Settlement Asset-Backed Revenue Bonds, Refunding Senior Lien Series 2020B-2 Class 2 | 0.82% | $17.91M |
| 12 | Kentucky Economic Development Finance Authority, Hospital Revenue Bonds, Owensboro Health, Refunding Series 2017A | 0.77% | $16.92M |
| 13 | Nuveen High Yield Municipal Bond ETFNHYM | 0.76% | $16.65M |
| 14 | Public Finance Authority, Wisconsin, Toll Revenue Bonds, Georgia SR 400 Express Lanes Project, Senior Lien Series 2025 | 0.76% | $16.60M |
| 15 | Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Restructured 2018A-1 | 0.75% | $16.46M |
| 16 | Public Finance Authority of Wisconsin, Limited Obligation PILOT Revenue Bonds, American Dream @ Meadowlands Project, Series 2017 | 0.74% | $16.25M |
| 17 | CSCDA Community Improvement Authority, California, Essential Housing Revenue Bonds, Altana Glendale, Series 2021A-2 | 0.74% | $16.14M |
| 18 | Hoover Industrial Development Board, Alabama, Environmental Improvement Revenue Bonds, United States Steel Corporation Proejcet, Series 2019 | 0.69% | $15.12M |
| 19 | South Miami Health Facilities Authority, Florida, Hospital Revenue Bonds, Baptist Health Systems of South Florida Obligated Group, Refunding Series 20 | 0.69% | $15.10M |
| 20 | Tulsa Municipal Airport Trust, Oklahoma, Revenue Bonds, American Airlines Inc., Refunding Series 2000B | 0.69% | $15.00M |
| 21 | Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Restructured 2018A-1 | 0.65% | $14.18M |
| 22 | Washington Health Care Facilities Authority, Revenue Bonds, Seattle Cancer Center Alliance, Series 2020 | 0.64% | $13.97M |
| 23 | New Jersey Health Care Facilities Financing Authority, Revenue Bonds, Inspira Health Obligated Group Issue, Series 2017A | 0.64% | $13.92M |
| 24 | Pennsylvania Higher Educational Facilities Authority, Revenue Bonds, University of Pennsylvania Health System, Refunding Series 2016C | 0.62% | $13.58M |
| 25 | Houston, Texas, Hotel Occupancy Tax and Special Revenue Bonds, Convention and Entertainment Facilities Department, Refunding First Lien Series 2026C | 0.62% | $13.50M |
Top 25 of 1,464 holdings, as of Jul 31, 2026. Percentages are of the fund's net assets.
What the fund owns
| Asset type | % of fund |
|---|---|
| Bonds and other debt | 162.94% |
| Stocks | 0.76% |
| Country | % of fund |
|---|---|
| United States | 163.70% |
Shares of net assets from the fund's N-PORT report. Funds that borrow can add up to more than 100%, with borrowing (such as repurchase agreements) shown as a negative share.
Monthly total returns
Over the 3 months to Jul 31, 2026, Nuveen Municipal High Income Opportunity Fund's total return was −0.64%, as reported to the SEC.
| Month | Total return |
|---|---|
| Jul 31, 2026 | −3.09% |
| Jun 30, 2026 | +1.59% |
| May 31, 2026 | +0.92% |
The fund's own total returns as reported to the SEC (N-PORT), including reinvested distributions. Not the sample prices above.
Fund profile
- Name
- Nuveen Municipal High Income Opportunity Fund
- Ticker
- NMZ
- Exchange
- NYSE
- Fund type
- Closed-end fund
- Trust
- NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
- SEC CIK
- 0001266585
- Fractional shares
- Yes
Recent SEC filings
- Sep 25, 2026
- Jul 2, 2026
- Jan 7, 2026
- Jul 7, 2025
- Jan 6, 2025
- Jul 2, 2024
- Mar 6, 2024
- Jan 5, 2024
Frequently asked questions
What is NMZ's price?
Nuveen Municipal High Income Opportunity Fund (NMZ) closed at $584.54 on Oct 9, 2026, down 1.02% from the previous close of $590.59.
What does NMZ hold?
Nuveen Municipal High Income Opportunity Fund held 1,464 investments worth $2.19B as of Jul 31, 2026. Its largest holding was Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Restructured 2018A-1, at 1.93% of the fund. Its five largest holdings were Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Restructured 2018A-1, New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Refunding Series 2006C, New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Refunding Series 2006C, New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Refunding Series 2006C, New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Capital Appreciation Series 2010A.
How has NMZ performed?
Over the 3 months to Jul 31, 2026, Nuveen Municipal High Income Opportunity Fund's total return was −0.64%, as reported to the SEC.
Sources and methodology
Holdings, net assets and monthly returns come from the fund's N-PORT filing with the SEC, as of Jul 31, 2026 (filed Sep 25, 2026). Prices are generated sample data for development. Data sources and disclosures