NMZ insider buying
2 cluster buysNUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
When two or more insiders at NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND buy NMZ on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in NMZ plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Sep 17, 2025 – Mar 5, 2026Detected Mar 5, 2026High conviction4 insidersTotal bought$196.2KMarket cap$2.3B
- Dec 3, 2024 – Mar 21, 2025Detected Mar 21, 2025High conviction3 insidersTotal bought$4.3KMarket cap$2.3B
All notable open-market buys in NMZ
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Jul 24, 2026 | 10% Owner | 9 | $10.24 | $92.1 | SEC ↗ |
| Mar 5, 2026 | Siffermann William Acluster Vice President | 100 | $10.48 | $1.0K | SEC ↗ |
| Dec 19, 2025 | 10% Owner | 1,000 | $10.32 | $10.3K | SEC ↗ |
| Oct 10, 2025 | BANK OF AMERICA CORP /DE/cluster 10% Owner | 6,440 | $10.56 | $68.0K | SEC ↗ |
| Oct 9, 2025 | 10% Owner | 190 | $10.62 | $2.0K | SEC ↗ |
| Sep 17, 2025 | BANK OF AMERICA CORP /DE/cluster 10% Owner | 10,784 | $10.65 | $114.8K | SEC ↗ |
| Mar 21, 2025 | Siffermann William Acluster Vice President | 300 | $11.08 | $3.3K | SEC ↗ |
| Jan 15, 2025 | BANK OF AMERICA CORP /DE/cluster 10% Owner | 5 | $10.79 | $53.9 | SEC ↗ |
| Jan 15, 2025 | BANK OF AMERICA CORP /DE/cluster 10% Owner | 1 | $10.79 | $10.8 | SEC ↗ |
| Dec 3, 2024 | 10% Owner | 75 | $11.55 | $866.3 | SEC ↗ |
| Nov 8, 2016 | 10% Owner | 7,000 | $13.54 | $94.8K | SEC ↗ |
| Sep 27, 2016 | 10% Owner | 488 | $14.58 | $7.1K | SEC ↗ |
| Sep 22, 2016 | 10% Owner | 132 | $14.59 | $1.9K | SEC ↗ |
| Aug 11, 2016 | 10% Owner | 4 | $15.06 | $60.2 | SEC ↗ |
| Jun 17, 2016 | 10% Owner | 1,340 | $14.60 | $19.6K | SEC ↗ |
| Jun 17, 2016 | 10% Owner | 590 | $14.59 | $8.6K | SEC ↗ |
| Jun 17, 2016 | 10% Owner | 210 | $14.60 | $3.1K | SEC ↗ |
| Jan 15, 2016 | 10% Owner | 15 | $13.84 | $207.6 | SEC ↗ |
| Aug 5, 2015 | 10% Owner | 29 | $13.34 | $386.9 | SEC ↗ |
| Mar 11, 2015 | 10% Owner | 679 | $13.76 | $9.3K | SEC ↗ |
| Dec 29, 2014 | 10% Owner | 200 | $13.38 | $2.7K | SEC ↗ |
| Jun 10, 2014 | 10% Owner | 2,500 | $13.38 | $33.5K | SEC ↗ |
NMZ insider buying — FAQ
- Are insiders buying NMZ stock?
- Yes — 4 distinct insiders have bought NMZ (NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND) on the open market, including 2 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Jul 28, 2026.
- How much NMZ stock have insiders bought?
- Insiders have bought a combined $381.8K of NMZ across 22 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in NMZ?
- A cluster buy is two or more distinct NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND insiders — officers, directors, or 10% owners — each buying NMZ on the open market within a rolling window. NMZ has 2 detected cluster buys to date.
- Where does this NMZ insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in NMZ
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy NMZ within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding NMZ.