Nuveen Municipal High Income Opportunity Fund
US ˙ NYSE ˙ US6706821039

SecurityNMZ / Nuveen Municipal High Income Opportunity Fund
InstitutionLPL Financial LLC
Latest Disclosed Ownership764,071 shares
Latest Disclosed Value $ 7,931,052
LPL Financial LLC reports 4.52% increase in ownership of NMZ / Nuveen Municipal High Income Opportunity Fund

On May 6, 2026 - LPL Financial LLC filed a 13F-HR form disclosing ownership of 764,071 shares of Nuveen Municipal High Income Opportunity Fund (US:NMZ) valued at $7,931,057 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 731,023 shares of Nuveen Municipal High Income Opportunity Fund. This represents a change in shares of 4.52% during the quarter. The current value of the position is $7,824,087 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)
2026-05-06 2026-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 764,071 33,048 4.52 7,931 6.47 0.0021
2026-02-11 2025-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 731,023 128,087 21.24 7,449 16.66 0.0020
2025-11-12 2025-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 602,936 132,285 28.11 6,385 30.84 0.0019
2025-08-12 2025-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 470,651 95,527 25.47 4,881 19.26 0.0016
2025-05-07 2025-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 375,124 -18,651 -4.74 4,093 -3.85 0.0016
2025-02-11 2024-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 393,775 2,550 0.65 4,257 -6.69 0.0017
2024-11-08 2024-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 391,225 39,615 11.27 4,562 20.25 0.0020
2024-08-07 2024-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 351,610 2,653 0.76 3,794 2.96 0.0019
2024-05-10 2024-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 348,957 59,840 20.70 3,685 28.99 0.0020
2024-02-14 2023-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 289,117 -88,264 -23.39 2,856 -18.45 0.0017
2023-11-13 2023-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 377,381 15,942 4.41 3,502 -8.32 0.0025
2023-07-31 2023-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 361,439 -15,350 -4.07 3,820 -6.12 0.0027
2023-05-10 2023-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 376,789 -12,698 -3.26 4,069 1.04 0.0032
2023-02-07 2022-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 389,487 86,666 28.62 4,027 29.36 0.0034
2022-11-14 2022-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 302,821 43,178 16.63 3,113 2.47 0.0030
2022-08-12 2022-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 259,643 22,461 9.47 3,038 -1.56 0.0029
2022-05-16 2022-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 237,182 96,692 68.82 3,086 45.29 0.0027
2022-02-14 2021-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 140,490 2,983 2.17 2,124 4.63 0.0018
2021-11-15 2021-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 137,507 19,921 16.94 2,030 12.15 0.0019
2021-08-13 2021-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 117,586 3,653 3.21 1,810 10.10 0.0018
2021-05-14 2021-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 113,933 -9,955 -8.04 1,644 -7.95 0.0019
2021-02-12 2020-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 123,888 -3,866 -3.03 1,786 3.66 0.0023
2020-11-09 2020-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 127,754 13,757 12.07 1,723 14.56 0.0027
2020-08-13 2020-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 113,997 31,281 37.82 1,504 46.02 0.0026
2020-05-14 2020-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 82,716 -4,621 -5.29 1,030 -16.87 0.0022
2020-02-14 2019-12-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 87,337 7,602 9.53 1,239 8.78 0.0023
2019-11-13 2019-09-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 79,735 11,741 17.27 1,139 20.02 0.0023
2019-08-09 2019-06-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 67,994 17,514 34.69 949 38.95 0.0020
2019-05-08 2019-03-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 50,480 7,607 17.74 683 36.87 0.0016
2019-02-07 2018-12-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 42,873 1,296 3.12 499 -4.41 0.0013
2018-11-14 2018-09-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 41,577 380 0.92 522 0.00 0.0013
2018-08-14 2018-06-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 41,197 -16,356 -28.42 522 -27.40 0.0014
2018-05-15 2018-03-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 57,553 32,729 131.84 719 112.72 0.0020
2018-02-14 2017-12-31 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 24,824 12,658 104.04 338 103.61 0.0010
2017-11-14 2017-09-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 12,166 23 0.19 166 1.84 0.0006
2017-08-14 2017-06-30 13F NUVEEN MUN HIGH INCOME OPP F COM 670682103 12,143 -58,450 -82.80 163 -82.44 0.0006
2017-05-15 2017-03-31 13F NUVEEN MUNICIPAL COM 670682103 70,593 -11,780 -14.30 928 -12.37 0.0063
2017-02-13 2016-12-31 13F NUVEEN MUNICIPAL COM 670682103 82,373 -77,049 -48.33 1,059 -53.61 0.0081
2016-11-16 2016-09-30 13F NUVEEN MUNICIPAL COM 670682103 159,422 -14,882 -8.54 2,283 -13.03 0.0217
2016-08-15 2016-06-30 13F NUVEEN MUNICIPAL COM 670682103 174,304 -187,978 -51.89 2,625 -48.50 0.0222
2016-05-16 2016-03-31 13F NUVEEN MUNICIPAL COM 670682103 362,282 138,371 61.80 5,097 63.79 0.0142
2016-02-12 2015-12-31 13F NUVEEN MUNICIPAL COM 670682103 223,911 115,496 106.53 3,112 113.59 0.0086
2015-11-13 2015-09-30 13F NUVEEN MUNICIPAL COM 670682103 108,415 6,559 6.44 1,457 8.98 0.0080
2015-08-14 2015-06-30 13F NUVEEN MUNICIPAL COM 670682103 101,856 -40 -0.04 1,337 -5.18 0.0068
2015-05-14 2015-03-31 13F NUVEEN MUNICIPAL COM 670682103 101,896 -12,464 -10.90 1,410 -7.96 0.0072
2015-02-13 2014-12-31 13F NUVEEN MUNICIPAL HIGH COM 670682103 114,360 19,272 20.27 1,532 23.35 0.0084
2014-11-10 2014-09-30 13F NUVEEN MUNICIPAL HIGH COM 670682103 95,088 5,614 6.27 1,242 4.72 0.0074
2014-08-05 2014-06-30 13F/A-1 NUVEEN MUNICIPAL HIGH COM 670682103 89,474 -16,360 -15.46 1,186 -11.89 0.0069
2014-08-05 2014-06-30 13F NUVEEN MUNICIPAL HIGH COM 670682103 89,474 1,693
2014-05-12 2014-03-31 13F NUVEEN MUNICIPAL HIGH COM 670682103 105,834 13,766 14.95 1,346 21.81 0.0083
2014-02-13 2013-12-31 13F NUVEEN MUNICIPAL HIGH COM 670682103 92,068 -8,093 -8.08 1,105 -4.08 0.0069
2013-11-04 2013-09-30 13F NUVEEN MUNICIPAL HIGH COM 670682103 100,161 -14,198 -12.42 1,152 -20.55 0.0077
2013-08-15 2013-06-30 13F NUVEEN MUNICIPAL HIGH COM 670682103 114,359 114,359 1,450 0.0104
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.