Nuveen Municipal High Income Opportunity Fund
NMZ- Exchange
- NYSE
- SEC CIK
- 0001266585
In the last 90 days, Nuveen Municipal High Income Opportunity Fund insiders filed 3 open-market purchases and 3 sales; 213 institutions reported holding it in 13F filings for Q2 2026, worth $358.6M in total; no superinvestor holds it.
Holders of 5% or more of NMZ
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Nuveen Municipal High Income Opportunity Fund, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Bank of America Corp | 13D/A | 52.40%1.87K shares | – | Dec 15, 20251 filing | Dec 15, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
1 Schedule 13D or 13G filing on Nuveen Municipal High Income Opportunity Fund, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Dec 15, 20254:47 PM ET | Bank of America Corpand 1 other | 13D/A | 52.40%1.87K shares | – | Dec 11, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Nuveen Municipal High Income Opportunity Fund shares.
No Form 144 notices for Nuveen Municipal High Income Opportunity Fund are on file.