Nuveen Municipal High Income Opportunity Fund
US ˙ NYSE ˙ US6706821039

SecurityNMZ / Nuveen Municipal High Income Opportunity Fund
InstitutionMelone Private Wealth, LLC
Latest Disclosed Ownership672,622 shares
Latest Disclosed Value $ 6,981,820
Melone Private Wealth, LLC reports 2.52% increase in ownership of NMZ / Nuveen Municipal High Income Opportunity Fund

On April 8, 2026 - Melone Private Wealth, LLC filed a 13F-HR form disclosing ownership of 672,622 shares of Nuveen Municipal High Income Opportunity Fund (US:NMZ) valued at $6,981,816 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 7, 2026 disclosing 656,100 shares of Nuveen Municipal High Income Opportunity Fund. This represents a change in shares of 2.52% during the quarter. The current value of the position is $6,887,649 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-04-08 2026-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 672,622 16,522 2.52 6,982 4.43 2.8517
2026-01-07 2025-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 656,100 62,241 10.48 6,686 6.31 2.8356
2025-10-17 2025-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 593,859 25,997 4.58 6,289 7.30 2.8490
2025-07-08 2025-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 567,862 22,425 4.11 5,860 -1.51 2.9987
2025-04-11 2025-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 545,437 27,440 5.30 5,951 6.27 3.1138
2025-01-14 2024-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 517,997 -10,676 -2.02 5,600 -9.17 2.9018
2024-10-07 2024-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 528,673 8,282 1.59 6,164 9.78 3.2736
2024-07-12 2024-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 520,391 11,440 2.25 5,615 4.48 3.3270
2024-05-03 2024-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 508,951 45,033 9.71 5,375 17.26 3.2265
2024-01-12 2023-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 463,918 105,573 29.46 4,584 37.83 2.9171
2023-10-10 2023-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 358,345 14,463 4.21 3,325 -8.50 2.3784
2023-07-27 2023-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 343,882 8,737 2.61 3,635 -0.68 2.5647
2023-04-20 2023-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 335,145 27,267 8.86 3,660 14.95 2.7928
2023-01-19 2022-12-31 13F NUVEEN MUN HIGH INCOME OPPORTU COM CEF 670682103 307,878 64,184 26.34 3,183 26.46 2.6973
2022-10-14 2022-09-30 13F NUVEEN MUN HIGH INCOME OPPORTU COM CEF 670682103 243,694 14,051 6.12 2,517 -8.51 2.1983
2022-07-11 2022-06-30 13F NUVEEN MUN HIGH INCOME OPPORTU COM CEF 670682103 229,643 37,915 19.78 2,751 15.88 2.3313
2022-04-29 2022-03-31 13F NUVEEN MUN HIGH INCOME OPPORTU COM CEF 670682103 191,728 76,653 66.61 2,374 36.44 1.9365
2022-01-21 2021-12-31 13F NUVEEN MUN HIGH INCOME OPPORTU COM CEF 670682103 115,075 115,075 1,740 1.3093
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.