Nuveen Municipal High Income Opportunity Fund
US ˙ NYSE ˙ US6706821039

SecurityNMZ / Nuveen Municipal High Income Opportunity Fund
InstitutionPrivate Advisor Group, LLC
Latest Disclosed Ownership54,264 shares
Latest Disclosed Value $ 563,260
Private Advisor Group, LLC reports 4.92% increase in ownership of NMZ / Nuveen Municipal High Income Opportunity Fund

On April 24, 2026 - Private Advisor Group, LLC filed a 13F-HR form disclosing ownership of 54,264 shares of Nuveen Municipal High Income Opportunity Fund (US:NMZ) valued at $563,260 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 51,720 shares of Nuveen Municipal High Income Opportunity Fund. This represents a change in shares of 4.92% during the quarter. The current value of the position is $553,493 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)
2026-04-24 2026-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 54,264 2,544 4.92 563 6.83 0.0025
2026-02-17 2025-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 51,720 2,556 5.20 527 1.35 0.0024
2025-11-13 2025-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 49,164 14,840 43.24 521 46.48 0.0026
2025-08-11 2025-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 34,324 2,300 7.18 356 1.72 0.0019
2025-05-05 2025-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 32,024 0 0.00 349 0.87 0.0021
2025-02-03 2024-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 32,024 -72,243 -69.29 346 -71.52 0.0019
2024-10-22 2024-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 104,267 -10,582 -9.21 1,216 -1.94 0.0075
2024-08-05 2024-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 114,849 2,240 1.99 1,239 4.21 0.0083
2024-04-30 2024-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 112,609 11,239 11.09 1,189 18.78 0.0085
2024-02-06 2023-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 101,370 -29,650 -22.63 1,002 -17.61 0.0078
2023-11-03 2023-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 131,020 -4,457 -3.29 1,216 -15.15 0.0109
2023-08-10 2023-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 135,477 14,506 11.99 1,432 9.65 0.0124
2023-05-10 2023-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 120,971 -6,928 -5.42 1,306 130,500.00 0.0125
2023-01-18 2022-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 127,899 1,031 0.81 1 -99.92 0.0001
2022-10-14 2022-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 126,868 11,434 9.91 1,304 -3.48 0.0150
2022-07-13 2022-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 115,434 9,286 8.75 1,351 -2.17 0.0120
2022-05-12 2022-03-31 13F/A-1 NUVEEN MUN HIGH INCOME OPPOR COM 670682103 106,148 2,069 1.99 1,381 -12.26 0.0106
2022-05-10 2022-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 104,079 0 1,574 0.0118
2022-02-10 2021-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 104,079 7,051 7.27 1,574 9.92 0.0118
2021-10-14 2021-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 97,028 5,174 5.63 1,432 1.27 0.0091
2021-08-12 2021-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 91,854 -5,351 -5.50 1,414 0.78 0.0123
2021-04-22 2021-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 97,205 17,428 21.85 1,403 22.00 0.0134
2021-04-01 2020-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 79,777 -263 -0.33 1,150 6.48 0.0120
2020-11-02 2020-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 80,040 5,056 6.74 1,080 9.20 0.0140
2020-08-17 2020-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 74,984 11,844 18.76 989 25.83 0.0137
2020-05-12 2020-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 63,140 32,106 103.45 786 78.64 0.0144
2020-02-10 2019-12-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 31,034 5,500 21.54 440 20.55 0.0068
2019-11-13 2019-09-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 25,534 5,000 24.35 365 27.18 0.0057
2019-08-14 2019-06-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 20,534 1,500 7.88 287 11.24 0.0052
2019-05-13 2019-03-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 19,034 0 0.00 258 16.22 0.0051
2019-02-08 2018-12-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 19,034 0 0.00 222 -7.11 0.0054
2018-11-01 2018-09-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 19,034 19,034 239 0.0049
2018-08-09 2018-06-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 0 -70,800 -100.00 0 -100.00
2018-05-09 2018-03-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 70,800 51,675 270.20 885 235.23 0.0346
2018-02-07 2017-12-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 19,125 -71,496 -78.90 264 -78.68 0.0112
2017-11-13 2017-09-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 90,621 -600 -0.66 1,238 0.73 0.0306
2017-08-10 2017-06-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 91,221 -630 -0.69 1,229 1.57 0.0333
2017-05-10 2017-03-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 91,851 35,915 64.21 1,210 66.44 0.0338
2017-02-09 2016-12-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 55,936 1,400 2.57 727 -6.91 0.0238
2016-11-10 2016-09-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 54,536 54,536 781 0.0318
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.