Security key
670682103
NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND - COM (NMZ)
CUSIP: 670682103
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / COM
- Total 13F shares
- 20,083,649
- Total 13F value
- $208,381,032
- Share change
- +1,233,206
- SEC-reported price per share
- $10.38
- Number of holders
- 137
- Value change
- +$12,796,607
- Number of buys
- 81
- Number of sells
- 34
Report period
Q1 2026
Institutions
137
Top holders
10
NMZ full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
Previous quarter: Q4 2025
NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND SEC filings
Broader feeds
Reporting periods
Holder history for CUSIP 670682103
Recent filing periods:
Ownership snapshot
Top reported holders of NMZ - NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND - COM (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BANK OF AMERICA CORP /DE/
Disclosed value leader
MORGAN STANLEY
Comparable rows
0/15
Latest evidence
31 Dec 2025
13F
3/4/5
Highest disclosed value: $26,725,813
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
MORGAN STANLEY has the largest disclosed position value at $26.73M.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens MORGAN STANLEY's linked filing trail.
Disclosed position value
Top 5
BANK OF AMERICA CORP /DE/
$4.31M
MORGAN STANLEY
$26.73M
UBS Group AG
$20.7M
GUGGENHEIM CAPITAL LLC
$18.51M
Hennion & Walsh Asset Management,...
$11.62M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BANK OF AMERICA CORP /DE/ |
13F
3/4/5
Company · 10%+ Owner
|
—
class O/S missing
|
$4,311,046
423,066 shares
|
— | 31 Dec 2025 |
| MORGAN STANLEY |
13F
Company
|
—
class O/S missing
|
$26,725,813
2,622,749 shares
|
— | 31 Dec 2025 |
| UBS Group AG |
13F
Company
|
—
class O/S missing
|
$20,697,612
2,031,169 shares
|
— | 31 Dec 2025 |
| GUGGENHEIM CAPITAL LLC |
13F
Company
|
—
class O/S missing
|
$18,513,752
1,816,855 shares
|
— | 31 Dec 2025 |
| Hennion & Walsh Asset Management, Inc. |
13F
Company
|
—
class O/S missing
|
$11,622,276
1,140,557 shares
|
— | 31 Dec 2025 |
| RAYMOND JAMES FINANCIAL INC |
13F
Company
|
—
class O/S missing
|
$11,009,512
1,080,423 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
137
Shares
20,083,649
Rows available
137
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
130
Q1 2026 holders
137
Holder diff
7
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend