Company profile

Nuveen Municipal High Income Opportunity Fund Insider Trading

NMZ

Every SEC Form 4 insider trading filing for Nuveen Municipal High Income Opportunity Fund (NMZ) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?

Exchange
NYSE
CIK
0001266585
Filings
21
Insiders
12
Last filing
2026-08-04

Activity summary

Mixed insider activity over the last 30 days: 7 purchases and 7 sales (14 transactions total).

Three year balance

Buy and sell value by quarter, Q2 16 to Q3 26. Nuveen Municipal High Income Opportunity Fund insiders are net buyers across the period shown.

Q2 16Q3 16Q4 16Q3 23Q4 23Q4 24Q1 25Q3 25Q4 25Q1 26Q2 26Q3 26

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $115K.

90 day insight

Over the last 90 days, Nuveen Municipal High Income Opportunity Fund insiders bought $490 (8 transactions) and sold $31K (10 transactions).

  • Most active insider: Bank Of America Corp /de/ with 16 transactions totaling $982.
  • Largest single sale: $19K by Moschner Albin F on Jun 22, 2026.

Activity is mixed — buys and sales are roughly balanced.

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValue
Aug 4, 2026Bank Of America Corp /de/NMZ
Sale
1$10.32$10
Aug 4, 2026Bank Of America Corp /de/NMZ
Purchase
1$10.19$10
Aug 4, 2026Bank Of America Corp /de/NMZ
Purchase
1$10.19$10
Aug 4, 2026Bank Of America Corp /de/NMZ
Purchase
1$10.18$10
Aug 4, 2026Bank Of America Corp /de/NMZ
Sale
1$10.24$10

45 more transactions hidden

Free account · No credit card required

Building something? Get API access →

Query this yourself

The same rows, over the API.

curl "https://api.form4api.com/v1/transactions?ticker=NMZ" \
  -H "X-Api-Key: $KEY"
Get a key

Top insiders

By total value filed.

Bank Of America Corp /de/10% owner32 filings$8K
Moschner Albin F4 filings+$21K
Toth Terence JTrustee5 filings$36K
Jones Nathaniel T.Vice President and Treasurer1 filing+$9K
Siffermann William AVice President2 filings+$4K

Institutional Ownership

Top 13F-HR holders of Nuveen Municipal High Income Opportunity Fund as of 2026-06-30

↓ decreasing
Total reported AUM
$112.4M
QoQ change
-43.7%
Reporting period
2026-06-30
#1
Hennion & Walsh Asset Management, Inc.
CIK 0001861642
$23.4M
2.2M shares
#2
LPL Financial LLC
CIK 0001403438
$11.4M
1.1M shares
#3
J.w. Cole Advisors, Inc.
CIK 0001404763
$10.8M
1.0M shares

Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →