# NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NMZ) — merger/definitive [pending]
Source: SEC API (secapi.ai) · situation sit_2906f77a86e30eb5509a · retrieved 2026-08-11T16:11:25.424Z

## Overview
Nuveen Municipal High Income Opportunity Fund is a closed-end municipal bond fund that invests in high-income municipal securities.

Nuveen New Jersey Quality Municipal Income Fund (NXJ), Nuveen Pennsylvania Quality Municipal Income Fund (NQP), and Nuveen Missouri Quality Municipal Income Fund (NOM) are merging into Nuveen Municipal High Income Opportunity Fund (NMZ). The merger is documented in a Joint Proxy Statement/Prospectus dated December 17, 2025, and a Joint Proxy Statement dated December 19, 2025. Despite losing state tax exemption, shareholders in NXJ, NQP, and NOM will experience higher common earnings yields post-merger: NXJ shareholders gain 2.87% (from 3.30% to 6.17%), NQP shareholders gain 2.63% (from 3.54% to 6.17%), and NOM shareholders gain 2.85% (from 3.32% to 6.17%), as of July 31, 2025.

## Terms
- Counterparty: Nuveen New Jersey Quality Municipal Income Fund; Nuveen Pennsylvania Quality Municipal Income Fund; Nuveen Missouri Quality Municipal Income Fund · Consideration: stock

## Key dates
- Announced 2026-01-23

## Timeline
- 2026-01-23 · 425 (0001999371-26-001517): 425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND — *Nuveen Municipal High Income Opportunity Fund is a closed-end fund that invests in a nationally diversified portfolio of municipal securities.* Holders of common and preferred shares of Nuveen New Jersey Quality Municipal Income Fund (NXJ), Nuveen Pennsylvania Quality Municipal Income Fund (NQP), and Nuveen Missouri Quality Municipal Income Fund (NOM) are being asked to vote on a proposal to merge these three funds into a wholly-owned subsidiary of Nuveen Municipal High Income Opportunity Fund (NMZ) in exchange for newly issued common shares of NMZ. The merger is expected to increase scale for the target funds while adding incremental scale for NMZ, with combined managed assets of approximately $3.37 billion as of July 31, 2025. Common shareholders are expected to benefit from higher earnings yields, reduced expenses, improved secondary market trading with narrower bid/ask spreads, and greater liquidity.
  https://www.sec.gov/Archives/edgar/data/1266585/0001999371-26-001517.txt
- 2026-01-23 · 425 (0001999371-26-001521): 425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND — *Nuveen Municipal High Income Opportunity Fund is a closed-end fund that invests in a nationally diversified portfolio of municipal securities.* Holders of common and preferred shares of Nuveen New Jersey Quality Municipal Income Fund (NXJ), Nuveen Pennsylvania Quality Municipal Income Fund (NQP), and Nuveen Missouri Quality Municipal Income Fund (NOM) are being asked to vote on a proposal to merge these three funds into a wholly-owned subsidiary of Nuveen Municipal High Income Opportunity Fund (NMZ) in exchange for newly issued common shares of NMZ. The merger is expected to increase scale for the target funds while adding incremental scale for NMZ, with combined managed assets of approximately $3.37 billion as of July 31, 2025. Common shareholders are expected to benefit from higher earnings yields, reduced expenses, improved secondary market trading with narrower bid/ask spreads, and greater liquidity.
  https://www.sec.gov/Archives/edgar/data/1266585/0001999371-26-001521.txt
- 2026-02-02 · 425 (0001999371-26-002258): 425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND — *Nuveen Municipal High Income Opportunity Fund is a closed-end fund that invests in a nationally diversified portfolio of municipal securities.* Holders of common and preferred shares of Nuveen New Jersey Quality Municipal Income Fund (NXJ), Nuveen Pennsylvania Quality Municipal Income Fund (NQP), and Nuveen Missouri Quality Municipal Income Fund (NOM) are being asked to vote on a proposal to merge these three funds into a wholly-owned subsidiary of Nuveen Municipal High Income Opportunity Fund (NMZ) in exchange for newly issued common shares of NMZ. The combined fund would have common assets of $2,120,784,666 and managed assets of $3,368,142,306 as of July 31, 2025. The merger is expected to provide common shareholders with higher earnings yields, reduced expenses, improved secondary market trading with narrower bid/ask spreads, and greater liquidity.
  https://www.sec.gov/Archives/edgar/data/1266585/0001999371-26-002258.txt
- 2026-02-02 · 425 (0001999371-26-002257): 425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND — *Nuveen Municipal High Income Opportunity Fund is a closed-end fund that invests in a nationally diversified portfolio of municipal securities.* Holders of common and preferred shares of Nuveen New Jersey Quality Municipal Income Fund (NXJ), Nuveen Pennsylvania Quality Municipal Income Fund (NQP), and Nuveen Missouri Quality Municipal Income Fund (NOM) are being asked to vote on a proposal to merge these three funds into a wholly-owned subsidiary of Nuveen Municipal High Income Opportunity Fund (NMZ) in exchange for newly issued common shares of NMZ. The combined fund would have common assets of $2,120,784,666 and managed assets of $3,368,142,306 as of July 31, 2025, with NMZ representing 53.9% of the combined fund's common assets. The merger is expected to provide common shareholders with higher earnings yields, reduced expenses, improved secondary market trading with narrower bid/ask spreads, and greater liquidity.
  https://www.sec.gov/Archives/edgar/data/1266585/0001999371-26-002257.txt
- 2026-02-04 · 425 (0001999371-26-002521): 425 - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND — *Nuveen Municipal High Income Opportunity Fund is a closed-end municipal bond fund that invests in high-income municipal securities.* Nuveen New Jersey Quality Municipal Income Fund (NXJ), Nuveen Pennsylvania Quality Municipal Income Fund (NQP), and Nuveen Missouri Quality Municipal Income Fund (NOM) are merging into Nuveen Municipal High Income Opportunity Fund (NMZ). The merger is documented in a Joint Proxy Statement/Prospectus dated December 17, 2025, and a Joint Proxy Statement dated December 19, 2025. Despite losing state tax exemption, shareholders in NXJ, NQP, and NOM will experience higher common earnings yields post-merger: NXJ shareholders gain 2.87% (from 3.30% to 6.17%), NQP shareholders gain 2.63% (from 3.54% to 6.17%), and NOM shareholders gain 2.85% (from 3.32% to 6.17%), as of July 31, 2025.
  https://www.sec.gov/Archives/edgar/data/1266585/0001999371-26-002521.txt

## Citations
- 0001999371-26-001517 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000199937126001517
- 0001999371-26-001521 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000199937126001521
- 0001999371-26-002258 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000199937126002258
- 0001999371-26-002257 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000199937126002257
- 0001999371-26-002521 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000199937126002521