Nuveen Municipal High Income Opportunity Fund
US ˙ NYSE ˙ US6706821039

SecurityNMZ / Nuveen Municipal High Income Opportunity Fund
InstitutionSmith, Moore & Co.
Latest Disclosed Ownership42,799 shares
Latest Disclosed Value $ 444,257
Smith, Moore & Co. reports 45.51% decrease in ownership of NMZ / Nuveen Municipal High Income Opportunity Fund

On May 5, 2026 - Smith, Moore & Co. filed a 13F-HR form disclosing ownership of 42,799 shares of Nuveen Municipal High Income Opportunity Fund (US:NMZ) valued at $444,254 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 78,545 shares of Nuveen Municipal High Income Opportunity Fund. This represents a change in shares of -45.51% during the quarter. The current value of the position is $436,550 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-05 2026-03-31 13F NUVEEN MUN HIGH INCOME OPPORTU COM CEF 670682103 42,799 -35,746 -45.51 444 -44.50 0.0323
2026-01-23 2025-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 78,545 -1,748 -2.18 800 -5.88 0.0605
2025-11-12 2025-09-30 13F NUVEEN MUN HIGH INCOME OPPOR OM 670682103 80,293 10,382 14.85 850 17.40 0.0651
2025-08-13 2025-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 69,911 10,240 17.16 725 11.21 0.0608
2025-05-15 2025-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 59,671 893 1.52 651 2.52 0.0603
2025-02-13 2024-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 58,778 18,557 46.14 635 35.68 0.0581
2024-11-12 2024-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 40,221 16,120 66.89 469 80.00 0.0448
2024-08-14 2024-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 24,101 24,101 260 0.0268
2024-02-13 2023-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 0 -21,206 -100.00 0 -100.00
2023-11-15 2023-09-30 13F/A-1 NUVEEN MUN HIGH INCOME OPPOR COM 670682103 21,206 -24,329 -53.43 197 -59.25 0.0260
2023-11-14 2023-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 45,535 0 481 0.0613
2023-08-11 2023-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 45,535 -3,068 -6.31 481 -8.21 0.0613
2023-05-12 2023-03-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 48,603 100 0.21 525 4.59 0.0714
2023-02-13 2022-12-31 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 48,503 4,433 10.06 502 10.60 0.0696
2022-11-14 2022-09-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 44,070 -347 -0.78 453 -12.88 0.0687
2022-08-12 2022-06-30 13F NUVEEN MUN HIGH INCOME OPPOR COM 670682103 44,417 44,417 520 0.0802
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.