Company: NMZ
Filing Date: 2025-01-06
Form Type: N-CSR
Source: 0001193125-25-002222
Chunk: 56

Company: NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
Filing Date: 2025-01-06
Form: N-CSR
Chunk 56
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         |     |             |     |   |              |
|   |           |     |            |     | -Cost $936,150,313                                                                                                                                                                           |     |         |     |             |     |   |  919,909,109 |
|   |           |     |            |     | FLOATING RATE OBLIGATIONS - (4.3)%                                                                                                                                                           |     |         |     |             |     |   |  -28,135,000 |
|   |           |     |            |     | MFP SHARES, NET - (36.3)%(l)                                                                                                                                                                 |     |         |     |             |     |   | -239,656,065 |
|   |           |     |            |     | OTHER ASSETS & LIABILITIES, NET -1.4%                                                                                                                                                        |     |         |     |             |     |   |    8,513,124 |
|   |           |     |            |     | NET ASSETS APPLICABLE TO COMMON SHARES - 100%                                                                                                                                                |     |         |     |             |     | $ |  660,631,168 |

| All percentages shown in the Portfolio of Investments are based on net assets applicable to common shares unless otherwise noted. |

| (a) | For fair value measurement disclosure purposes, investment classified as Level 3. |

| (b) | Security is exempt from registration under Rule 144A of the Securities Act of 1933, as amended. These securities are deemed liquid and may be resold in transactions exempt from registration, which are normally those transactions with qualified institutional buyers. As of the end of the reporting period, the aggregate value of these securities is $268,892,004 or 29.2% of Total Investments. |

| (c) | When-issued or delayed delivery security. |

| (d) | Defaulted security. A security whose issuer has failed to fully pay principal and/or interest when due, or is under the protection of bankruptcy. |

| (e) | Step-upcoupon bond, a bond with a coupon that increases (“steps up”), usually at regular intervals, while the bond is outstanding. The rate shown is the coupon as of the end of the reporting period. |

| (f) | Investment, or portion of investment, has been pledged to collateralize the net payment obligations for investments in inverse floating rate transactions. |

| (g) | Backed by an escrow or trust