Nuveen Municipal High Income Opportunity Fund
US ˙ NYSE ˙ US6706821039

SecurityNMZ / Nuveen Municipal High Income Opportunity Fund
InstitutionCoreFirst Bank & Trust
Latest Disclosed Ownership403 shares
Latest Disclosed Value $ 4,183
CoreFirst Bank & Trust ownership in NMZ / Nuveen Municipal High Income Opportunity Fund

On June 3, 2026 - CoreFirst Bank & Trust filed a 13F-HR form disclosing ownership of 403 shares of Nuveen Municipal High Income Opportunity Fund (US:NMZ) valued at $4,183 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 403 shares of Nuveen Municipal High Income Opportunity Fund. This represents a change in shares of 0.00% during the quarter. The current value of the position is $4,127 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)
2026-06-03 2026-03-31 13F Nuveen Muni High Income Opportunity Fund Com 670682103 403 0 0.00 4 0.00 0.0022
2026-02-11 2025-12-31 13F Nuveen Muni High Income Opportunity Fund Com 670682103 403 0 0.00 4 0.00 0.0022
2025-11-13 2025-09-30 13F Nuveen Muni High Income Opportunity Fund Com 670682103 403 0 0.00 4 0.00 0.0015
2025-08-14 2025-06-30 13F Nuveen Muni High Income Opportunity Fund Com 670682103 403 403 4 0.0024
2025-04-29 2025-03-31 13F Nuveen Muni High Income Opportunity Fund Com 670682103 0 -806 -100.00 0 -100.00
2025-02-11 2024-12-31 13F Nuveen Muni High Income Opportunity Fund Com 670682103 806 0 0.00 9 -11.11 0.0052
2025-02-11 2024-09-30 13F Nuveen Muni High Income Opportunity Fund Com 670682103 806 806 9 0.0054
2024-08-14 2024-06-30 13F Nuveen Muni High Income Opportunity Fund Com 670682103 0 -806 -100.00 0 -100.00
2024-05-15 2024-03-31 13F Nuveen Muni High Income Opportunity Fund Com 670682103 806 0 0.00 9 14.29 0.0053
2024-03-18 2023-12-31 13F Nuveen Muni High Income Opportunity Fund Com 670682103 806 0 0.00 8 0.00 0.0053
2023-12-18 2023-09-30 13F Nuveen Muni High Income Opportunity Fund Com 670682103 806 0 0.00 7 -12.50 0.0053
2023-08-07 2023-06-30 13F Nuveen Muni High Income Opportunity Fund Com 670682103 806 0 0.00 9 0.00 0.0060
2023-05-15 2023-03-31 13F Nuveen Muni High Income Opportunity Fund Com 670682103 806 0 0.00 9 0.00 0.0063
2023-02-16 2022-12-31 13F Nuveen Muni High Income Opportunity Fund Com 670682103 806 -1,353 -62.67 8 -63.64 0.0063
2022-11-16 2022-09-30 13F Nuveen Muni High Income Opportunity Fund Com 670682103 2,159 0 0.00 22 -12.00 0.0190
2022-08-16 2022-06-30 13F Nuveen Muni High Income Opportunity Fund Com 670682103 2,159 -1,833 -45.92 25 -51.92 0.0197
2022-05-16 2022-03-31 13F Nuveen Muni High Income Opportunity Fund Com 670682103 3,992 0 0.00 52 -13.33 0.0356
2022-02-10 2021-12-31 13F Nuveen Muni High Income Opportunity Fund Com 670682103 3,992 0 0.00 60 1.69 0.0388
2021-11-15 2021-09-30 13F Nuveen Muni High Income Opportunity Fund Com 670682103 3,992 0 0.00 59 -3.28 0.0409
2021-08-17 2021-06-30 13F Nuveen Muni High Income Opportunity Fund Com 670682103 3,992 989 32.93 61 41.86 0.0415
2021-05-18 2021-03-31 13F Nuveen Muni High Income Opportunity Fund Com 670682103 3,003 0 0.00 43 0.00 0.0295
2021-02-16 2020-12-31 13F Nuveen Muni High Income Opportunity Fund Com 670682103 3,003 3,003 43 0.0319
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.