NMZ

NYSE

Nuveen Municipal High Income Opportunity Fund

SectorFinanceIndustryFinance/Investors ServicesIPO2003

News25/Ratings0

Nuveen Municipal High Income Opportunity Fund is a closed-end fixed income mutual fund launched by Nuveen Investments Inc. The fund is co-managed by Nuveen Fund Advisors LLC and Nuveen Asset Management, LLC. It invests in the fixed income markets of the United States. The fund primarily invests in investment grade tax-exempt municipal securities. The fund was formerly known as Nuveen Municipal High Yield Opportunity Fund. Nuveen Municipal High Income Opportunity Fund was founded in November 19, 2003 and is based in the United States.

News · 26 weeks33-86%

2025-10-262026-04-19

Mix1690d

SEC Filings13(81%)
Insider2(13%)
Other1(6%)

Latest news

25 items

21dPR
Nuveen Municipal Closed-End Funds Announce Shareholder Approval of Proposed Mergers
Shareholders of Nuveen Missouri Quality Municipal Income Fund (NYSE:NOM), Nuveen New Jersey Quality Municipal Income Fund (NYSE:NXJ), Nuveen Pennsylvania Quality Municipal Income Fund (NYSE:NQP) and Nuveen Municipal High Income Opportunity Fund (NYSE:NMZ) have approved a proposal to merge the funds. The mergers will combine NOM, NXJ, and NQP into NMZ. Subject to the satisfaction of certain customary closing conditions, the mergers are expected to become effective before the market opens on April 27, 2026. Each fund has declared a regular monthly distribution payable May 1, 2026, with a record date of April 15, 2026. The funds may declare additional distributions prior to the completion of
35dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
35dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
48dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
48dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
48dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
48dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
48dINSIDER
Vice President Siffermann William A bought $1,048 worth of shares (100 units at $10.48), increasing direct ownership by 12% to 914 units (SEC Form 4)
4 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Issuer)
55dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
56dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
59dINSIDER
SEC Form 3 filed by new insider Castro Joseph
3 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Issuer)
78dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
78dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
78dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
83dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
83dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
90dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
90dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
90dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
97dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
97dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
99dSEC
SEC Form N-CEN filed by Nuveen Municipal High Income Opportunity Fund
N-CEN - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filer)
106dSEC
SEC Form N-CSR filed by Nuveen Municipal High Income Opportunity Fund
N-CSR - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filer)
115dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)
115dSEC
SEC Form 425 filed by Nuveen Municipal High Income Opportunity Fund
425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (0001266585) (Filed by)