STOCK TITAN

Nuveen Municipal High Income Opportunity Fund SEC Filings

NMZ NYSE

Welcome to our dedicated page for Nuveen Municipal High Income Opportunity Fund SEC filings (Ticker: NMZ), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.

Our SEC filing database is enhanced with expert analysis from Rhea-AI, providing insights into the potential impact of each filing on Nuveen Municipal High Income Opportunity Fund's stock performance. Each filing includes a concise AI-generated summary, sentiment and impact scores, and end-of-day stock performance data showing the actual market reaction. Navigate easily through different filing types including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, proxy statements (DEF 14A), and Form 4 insider trading disclosures.

Designed for fundamental investors and regulatory compliance professionals, our page simplifies access to critical SEC filings. By combining real-time EDGAR feed updates, Rhea-AI's analytical insights, and historical stock performance data, we provide comprehensive visibility into Nuveen Municipal High Income Opportunity Fund's regulatory disclosures and financial reporting.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
-
Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
-
Rhea-AI Summary

Nuveen Municipal High Income Opportunity Fund vice president William A. Siffermann reported an open-market purchase of common shares. On March 5, 2026, he bought 100 shares at an average price of $10.4785 per share. Following this transaction, his directly owned stake increased to 913.9717 shares of the fund’s common stock.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
insider
Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
-
Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
-
Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
-
Rhea-AI Summary

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND reported an initial insider ownership filing for executive Joseph Castro. He serves as EVP, Chief Risk & Compliance. This Form 3 does not list any share transactions, functioning as a baseline disclosure of his reporting status with the fund.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
insider
-
Rhea-AI Summary

Nuveen outlines how a proposed merger into Nuveen Municipal High Income Opportunity Fund (NMZ) would affect shareholders of NXJ, NQP and another state-specific municipal fund. The key focus is the loss of state tax exemption versus changes in earnings yields.

As of July 31, 2025, common earnings yields were 3.30% for NXJ, 3.54% for NQP and 3.32% for the other fund, compared with a 6.17% common earnings yield for NMZ post-merger, implying increases of 2.87%, 2.63% and 2.85%. After adjusting for each state’s maximum tax rate, state tax adjusted equivalent rates were 3.70%, 3.65% and 3.49% versus NMZ’s 6.17%, still showing gains of 2.47%, 2.52% and 2.68%. The funds state that shareholders would experience no negative impact from losing state tax exemption on earnings because NMZ’s higher yield more than offsets it.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
Rhea-AI Summary

Nuveen outlines how a proposed merger into Nuveen Municipal High Income Opportunity Fund (NMZ) would affect shareholders of NXJ, NQP and another state-specific municipal fund. The key focus is the loss of state tax exemption versus changes in earnings yields.

As of July 31, 2025, common earnings yields were 3.30% for NXJ, 3.54% for NQP and 3.32% for the other fund, compared with a 6.17% common earnings yield for NMZ post-merger, implying increases of 2.87%, 2.63% and 2.85%. After adjusting for each state’s maximum tax rate, state tax adjusted equivalent rates were 3.70%, 3.65% and 3.49% versus NMZ’s 6.17%, still showing gains of 2.47%, 2.52% and 2.68%. The funds state that shareholders would experience no negative impact from losing state tax exemption on earnings because NMZ’s higher yield more than offsets it.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
-
Rhea-AI Summary

Nuveen’s proposal to merge several state-specific municipal funds into Nuveen Municipal High Income Opportunity Fund (NMZ) compares after-tax earnings for shareholders who would lose state tax exemption. Using industry convention, yields for NXJ, NQP, and the Missouri fund are “grossed up” by each state’s maximum tax rate.

As of July 31, 2025, common earnings yields were 3.30% for NXJ, 3.54% for NQP, 3.32% for the Missouri fund, and 6.17% for NMZ. On a state tax adjusted equivalent basis, these become 3.70%, 3.65%, and 3.49% versus NMZ’s 6.17%. The table shows gains of about 2.5 percentage points in state tax adjusted equivalent rates for each state fund, indicating higher earnings even after losing state tax exemption.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
-
Rhea-AI Summary

Nuveen’s proposal to merge several state-specific municipal funds into Nuveen Municipal High Income Opportunity Fund (NMZ) compares after-tax earnings for shareholders who would lose state tax exemption. Using industry convention, yields for NXJ, NQP, and the Missouri fund are “grossed up” by each state’s maximum tax rate.

As of July 31, 2025, common earnings yields were 3.30% for NXJ, 3.54% for NQP, 3.32% for the Missouri fund, and 6.17% for NMZ. On a state tax adjusted equivalent basis, these become 3.70%, 3.65%, and 3.49% versus NMZ’s 6.17%. The table shows gains of about 2.5 percentage points in state tax adjusted equivalent rates for each state fund, indicating higher earnings even after losing state tax exemption.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
Rhea-AI Summary

Nuveen’s municipal funds provide supplemental information on a proposed merger into Nuveen Municipal High Income Opportunity Fund (NMZ). The disclosure addresses a proxy advisory firm’s question about how losing state tax exemption affects shareholders in Nuveen New Jersey (NXJ), Pennsylvania (NQP), and Missouri state funds.

The analysis uses industry convention by “grossing up” fund earnings yields by each state’s maximum tax rate (10.75% for NXJ, 3.07% for NQP, 4.80% for Missouri). As of July 31, 2025, NMZ’s post‑merger common earnings yield is 6.17%, versus state fund yields between 3.30% and 3.54%, and state tax adjusted equivalent rates between 3.49% and 3.70%. The table shows shareholders would see higher earnings and state tax adjusted equivalent rates after the merger despite losing state tax exemption.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
-
Rhea-AI Summary

Nuveen’s municipal funds provide supplemental information on a proposed merger into Nuveen Municipal High Income Opportunity Fund (NMZ). The disclosure addresses a proxy advisory firm’s question about how losing state tax exemption affects shareholders in Nuveen New Jersey (NXJ), Pennsylvania (NQP), and Missouri state funds.

The analysis uses industry convention by “grossing up” fund earnings yields by each state’s maximum tax rate (10.75% for NXJ, 3.07% for NQP, 4.80% for Missouri). As of July 31, 2025, NMZ’s post‑merger common earnings yield is 6.17%, versus state fund yields between 3.30% and 3.54%, and state tax adjusted equivalent rates between 3.49% and 3.70%. The table shows shareholders would see higher earnings and state tax adjusted equivalent rates after the merger despite losing state tax exemption.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
-
Rhea-AI Summary

Nuveen’s municipal funds are asking common and preferred shareholders to approve a merger of NXJ, NQP, and a Missouri fund into NMZ, creating a larger combined municipal income fund. As of July 31, 2025, the combined fund would have about $3.37 billion in managed assets and $2.12 billion in common assets.

For common shareholders, the materials highlight a post-merger NMZ common earnings yield of 6.17%, versus about 3.30%–3.54% for the target funds, and taxable equivalent rates rising by roughly 3.6%–4.3%. Total expense ratios are projected to fall, with indicated savings such as 0.34% for NXJ and 1.42% for the Missouri fund.

The merger is also expected to narrow trading discounts and improve liquidity, with bid/ask spreads tightening and average daily trading volume increasing. For preferred shareholders, NMZ’s diversified national portfolio means its preferred shares will not include the state tax gross-up feature, and the merged structure would have a leverage ratio around 42.04% and preferred share coverage of about 334.24% as of July 31, 2025.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
Rhea-AI Summary

Nuveen’s municipal funds are asking common and preferred shareholders to approve a merger of NXJ, NQP, and a Missouri fund into NMZ, creating a larger combined municipal income fund. As of July 31, 2025, the combined fund would have about $3.37 billion in managed assets and $2.12 billion in common assets.

For common shareholders, the materials highlight a post-merger NMZ common earnings yield of 6.17%, versus about 3.30%–3.54% for the target funds, and taxable equivalent rates rising by roughly 3.6%–4.3%. Total expense ratios are projected to fall, with indicated savings such as 0.34% for NXJ and 1.42% for the Missouri fund.

The merger is also expected to narrow trading discounts and improve liquidity, with bid/ask spreads tightening and average daily trading volume increasing. For preferred shareholders, NMZ’s diversified national portfolio means its preferred shares will not include the state tax gross-up feature, and the merged structure would have a leverage ratio around 42.04% and preferred share coverage of about 334.24% as of July 31, 2025.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger
-
Rhea-AI Summary

Nuveen is asking shareholders to approve a merger combining Nuveen New Jersey (NXJ), Nuveen Pennsylvania (NQP) and Nuveen Missouri municipal funds into Nuveen Municipal High Income Opportunity Fund (NMZ). Common shareholders would receive newly issued NMZ shares, and preferred shareholders also vote on the proposal.

The materials highlight projected benefits for common shareholders as of July 31, 2025, including higher post‑merger common earnings yields of 6.17% for NMZ, with increases of about 2.6–2.9 percentage points for the target funds, and taxable equivalent rate increases of about 3.6–4.3 percentage points. Estimated total expense savings range up to 1.42 percentage points for one target fund. The merger is also expected to narrow trading discounts, improve bid/ask spreads, and increase average daily trading volume.

For preferred shareholders, the NMZ preferred shares received in the merger would no longer include state tax gross‑up provisions, reflecting NMZ’s nationally diversified portfolio. The combined fund is shown with managed assets of $3.37 billion, a leverage ratio of 42.04%, and preferred share coverage of 334.24%, illustrating the capital structure and coverage metrics after combining the funds.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
merger

FAQ

How many Nuveen Municipal High Income Opportunity Fund (NMZ) SEC filings are available on StockTitan?

StockTitan tracks 56 SEC filings for Nuveen Municipal High Income Opportunity Fund (NMZ), including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, and Form 4 insider trading disclosures. Each filing includes AI-generated summaries, impact scoring, and sentiment analysis.

When was the most recent SEC filing for Nuveen Municipal High Income Opportunity Fund (NMZ)?

The most recent SEC filing for Nuveen Municipal High Income Opportunity Fund (NMZ) was filed on March 7, 2026.