Company: NMZ
Filing Date: 2025-01-06
Form Type: N-CSR
Source: 0001193125-25-002222
Chunk: 52

Company: NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
Filing Date: 2025-01-06
Form: N-CSR
Chunk 52
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.0%. |

| AMT | Alternative Minimum Tax |

| PIK | Payment-in-kind(“PIK”) security. Depending on the terms of the security, income may be received in the form of cash, securities, or a combination of both. The PIK rate shown, where applicable, represents the annualized rate of the last PIK payment made by the issuer as of the end of the reporting period. |

| UB | Underlying bond of an inverse floating rate trust reflected as a financing transaction. Inverse floating rate trust is a Recourse Trust unless otherwise noted. |

See Notes to Financial Statements 153 Portfolio of Investments October 31, 2024 NDMO

| PRINCIPAL  |     |        |     | DESCRIPTION                                                                                                                                                                         
 LONG-TERM INVESTMENTS - 137.9% (99.0% of Total Investments)                                                                                                                         
 CORPORATE BONDS - 1.5% (1.1% of Total Investments)                                                                                                                                  
 HEALTH CARE EQUIPMENT & SERVICES - 1.4% (1.0% of Total Investments)                                                                                                                 |     |   RATE |     | MATURITY |     |   |      VALUE |
|:-----------|:----|:-------|:----|:------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:----|-------:|:----|:---------|:----|:--|-----------:|
| $2,750,000 |     |        |     | Care New England Health System                                                                                                                                                      |     | 5.500% |     | 09/01/26 |     | $ |  2,670,082 |
| 3,000,000  |     |        |     | Toledo Hospital/The                                                                                                                                                                 |     |  6.015 |     | 11/15/48 |     |   |  2,649,330 |
| 4,363,000  |     |        |     | Toledo Hospital/The                                                                                                                                                                 |     |  5.325 |     | 11/15/28 |     |   |  4,250,827 |
|            |     |        |     | TOTAL HEALTH CARE EQUIPMENT & SERVICES                                                                                                                                              |     |        |     |          |     |   |  9,570,239 |
|            |     |        |     | REAL ESTATE MANAGEMENT & DEVELOPMENT - 0.1% (0.1% of Total Investments)                                                                                                             |     |        |