Companies / Nuveen Municipal High Income Opportunity Fund
Nuveen Municipal High Income Opportunity Fund
NYSE: NMZCIK 1266585CHICAGO, IL
Ownership
13F as of Jun 30, 2026
Share count not yet available for this company — ownership percentages can’t be computed.
Insiders 5
View all →| Insider | % of shares | Shares |
|---|---|---|
| — | 4,524 | |
Siffermann William AVice President | — | 914 |
Castro JosephEVP, Chief Risk & Compliance | — | — |
Wells Fargo & COMPANY/MN10% owner | — | — |
| — | — |
Institutional holders 137
View all →| Holder | Value | % of shares |
|---|---|---|
| $26.73M | — | |
| $21.21M | — | |
| $20.70M | — | |
| $11.62M | — | |
| $11.42M | — | |
| $11.01M | — | |
| $8.66M | — | |
| $6.69M | — | |
| $4.43M | — | |
| $4.31M | — |
Activity
InsidersInstitutions
What insiders are doing in this stock (Form 4).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Jun 22, 2026 | Moschner Albin F | Sell | Common Stock | $18.8K | -2K -32.36% | 3,788 | low |
| Jun 22, 2026 | Moschner Albin F | Sell | Common Stock | $11.4K | -1K -59.91% | 736 | low |
| Mar 5, 2026 | Siffermann William A Executive | Buy | Common Stock | $1.0K | +100 +12.29% | 914 | low |
| Apr 27, 2026 | Wells Fargo & COMPANY/MN 10% owner | Other | Variable Rate Demand Preferred Shares | — | +5K | 4,504 | low |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| NMZ | Closed-End Fund | 670682103 |