Latest Period
Q1 2026
Security Snapshot
NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND - COM (NMZ) Institutional Ownership
CUSIP: 670682103
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
137
Shares (Excl. Options)
20,083,649
Price
$10.38
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- Security type / class
- Equity / COM
- Symbol
- NMZ on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 20,083,649
- Total 13F value
- $208,381,032
- Portfolio coverage rank
- 0%
- Share change
- +1,233,206
- Value change
- +$12,796,607
- Number of holders
- 137
- SEC-reported price per share
- $10.57
- Insider filing price
- $10.57
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- NMZ - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND - COM is tracked under CUSIP 670682103.
- 137 institutions reported positions in Q1 2026.
- Schedule 13D/13G significant owner rows are not currently available.
Change
- Holder count moved from 137 to 3 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $208,381,032 to $664,462.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 137 institutions filings for Q1 2026.
Security key
670682103
Latest holder period
Q1 2026
13F holders
137
13D/G owners
0
CIK / CUSIP context first
Open Q1 2026 holders
NMZ full holder history
NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND SEC filings
NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 670682103:
As of 31 Mar 2026, 137 institutional investors reported holding 20,083,649 shares of NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND - COM (NMZ).
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q1 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 62,863 | $664,462 | +$120,223 | $10.57 | 3 |
| 2026 Q1 | 20,083,649 | $208,381,032 | +$12,796,607 | $10.38 | 137 |
| 2025 Q4 | 18,938,140 | $192,988,119 | +$14,746,565 | $10.19 | 130 |
| 2025 Q3 | 17,016,350 | $180,111,749 | +$2,944,992 | $10.59 | 122 |
| 2025 Q2 | 17,162,775 | $177,956,982 | -$1,560,938 | $10.37 | 126 |
| 2025 Q1 | 17,254,961 | $188,244,160 | +$7,315,131 | $10.91 | 130 |
| 2024 Q4 | 16,635,378 | $179,876,006 | +$4,489,269 | $10.81 | 125 |
| 2024 Q3 | 15,976,805 | $185,977,476 | +$5,735,379 | $11.66 | 120 |
| 2024 Q2 | 15,661,365 | $168,993,166 | -$44,126 | $10.79 | 119 |
| 2024 Q1 | 15,668,790 | $165,368,655 | +$3,572,346 | $10.56 | 117 |
| 2023 Q4 | 15,380,614 | $151,935,904 | +$12,847,310 | $9.88 | 132 |
| 2023 Q3 | 13,643,943 | $126,597,104 | +$1,152,440 | $9.28 | 114 |
| 2023 Q2 | 13,495,652 | $142,650,520 | -$3,211,043 | $10.57 | 112 |
| 2023 Q1 | 13,751,033 | $148,448,067 | +$14,789,882 | $10.80 | 121 |
| 2022 Q4 | 12,365,891 | $127,884,488 | +$18,483,613 | $10.34 | 123 |
| 2022 Q3 | 10,675,643 | $109,926,549 | -$1,347,034 | $10.28 | 117 |
| 2022 Q2 | 10,744,078 | $125,798,595 | -$1,137,328 | $11.70 | 117 |
| 2022 Q1 | 10,542,170 | $136,797,434 | +$5,139,012 | $13.01 | 109 |
| 2021 Q4 | 10,310,769 | $155,891,885 | +$3,550,599 | $15.12 | 121 |
| 2021 Q3 | 9,796,048 | $144,572,478 | +$8,981,724 | $14.76 | 110 |
| 2021 Q2 | 9,085,642 | $139,847,837 | +$9,897,710 | $15.39 | 108 |
| 2021 Q1 | 8,449,721 | $121,934,750 | +$5,765,007 | $14.43 | 108 |
| 2020 Q4 | 7,180,955 | $103,529,929 | +$4,944,698 | $14.42 | 108 |
| 2020 Q3 | 6,778,957 | $91,419,164 | +$3,793,990 | $13.49 | 96 |
| 2020 Q2 | 6,418,100 | $84,686,046 | -$13,116,443 | $13.19 | 86 |