Nuveen Municipal High Income Opportunity Fund
US ˙ NYSE ˙ US6706821039

SecurityNMZ / Nuveen Municipal High Income Opportunity Fund
InstitutionCetera Investment Advisers
Latest Disclosed Ownership397,625 shares
Latest Disclosed Value $ 4,127,352
Cetera Investment Advisers reports 10.76% increase in ownership of NMZ / Nuveen Municipal High Income Opportunity Fund

On May 13, 2026 - Cetera Investment Advisers filed a 13F-HR form disclosing ownership of 397,625 shares of Nuveen Municipal High Income Opportunity Fund (US:NMZ) valued at $4,127,348 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 358,987 shares of Nuveen Municipal High Income Opportunity Fund. This represents a change in shares of 10.76% during the quarter. The current value of the position is $4,047,822 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)
2026-05-13 2026-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 397,625 38,638 10.76 4,127 12.82 0.0044
2026-02-17 2025-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 358,987 -43,073 -10.71 3,658 -14.07 0.0040
2025-11-14 2025-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 402,060 50,893 14.49 4,258 16.92 0.0049
2025-08-08 2025-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 351,167 21,372 6.48 3,642 1.20 0.0061
2025-05-06 2025-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 329,795 8,087 2.51 3,598 3.48 0.0070
2025-02-14 2024-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 321,708 39,280 13.91 3,478 5.59 0.0073
2024-11-13 2024-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 282,428 38,301 15.69 3,293 25.02 0.0072
2024-08-22 2024-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 244,127 5,141 2.15 2,634 4.40 0.0061
2024-05-24 2024-03-31 13F/A-1 NUVEEN MUN HIGH INCOME OPPOR COM 670682103 238,986 220,763 1,211.45 2,524 1,301.67 0.0060
2024-05-15 2024-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 12,879 -5,344 136 0.0015
2024-02-13 2023-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 18,223 -805 -4.23 180 2.27 0.0015
2023-11-14 2023-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 19,028 -103 -0.54 177 -12.87 0.0015
2023-08-10 2023-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 19,131 -4,591 -19.35 202 -21.09 0.0017
2023-05-15 2023-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 23,722 3,156 15.35 256 20.75 0.0022
2023-02-14 2022-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 20,566 -1,318 -6.02 213 -5.78 0.0020
2022-11-14 2022-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 21,884 -4,804 -18.00 225 -27.88 0.0045
2022-08-11 2022-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 26,688 4,552 20.56 312 8.33 0.0050
2022-05-13 2022-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 22,136 -2,763 -11.10 288 -23.40 0.0041
2022-02-14 2021-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 24,899 3,540 16.57 376 19.37 0.0054
2021-11-16 2021-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 21,359 -1,567 -6.84 315 -10.76 0.0050
2021-08-13 2021-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 22,926 2,702 13.36 353 20.89 0.0057
2021-05-17 2021-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 20,224 -417 -2.02 292 -2.01 0.0057
2021-02-17 2020-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 20,641 10,341 100.40 298 114.39 0.0059
2020-11-13 2020-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 10,300 0 0.00 139 2.21 0.0114
2020-08-13 2020-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 10,300 0 0.00 136 6.25 0.0126
2020-05-08 2020-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 10,300 0 0.00 128 -12.33 0.0157
2020-02-10 2019-12-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 10,300 0 0.00 146 0.00 0.0147
2019-11-06 2019-09-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 10,300 10,300 146 0.0177
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.