Company: NMZ
Filing Date: 2025-06-26
Form Type: NPORT-P
Source: 0001752724-25-157164
Chunk: 2439

Company: NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
Filing Date: 2025-06-26
Form: NPORT-P
Chunk 2439
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 if the Fund is the cash borrower and posts collateral.   | Repurchase         
 Reverse repurchase |

b. Counterparty.

| i.	Cleared by central counterparty? [Y/N] If  Y, provide the name of the central counterparty. | Yes 
 No  |

ii. If N, provide the name and LEI (if any) of counterparty.

| c. Tri-party?       | Yes 
 No  |
| d. Repurchase rate. |     |
| e. Maturity date.   |     |

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

NPORT-P: Part E: Explanatory Notes (if any)

| The Fund may provide any information it believes would be helpful in 
 understanding the information reported in response to any Item of    
 this Form. The Fund may also explain any assumptions that it made in 
 responding to any Item of this Form. To the extent responses relate  
 to a particular Item, provide the Item number(s), as applicable.     |

| Note Item | C.5.a |

| Explanatory Notes | The International Organization for Standardization (ISO) country code included within Part C.5. of this filing may differ from that used for other purposes, such as for fund portfolio compliance purposes and for financial reporting purposes (i.e. the preparation of the fund's schedule of investments included within Part F of Form N-PORT and Form N-CSR. |

| Note Item | B.1.a |

| Explanatory Notes | On September 18, 2024, Vistra Corp. (Vistra) and Nuveen agreed to terms for the sale of the Vistra Vision interest. In exchange for its membership interest in Vistra Vision, the Fund will receive a series of payments from Vistra through December 31, 2026. The resulting receivable, net of transaction costs, has been discounted to reflect these future payments. As of April 30, 2025, the net receivable for the sale of Vistra Vision was $27,114,023. |

NPORT-P: Signatures

The Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

| Registrant:    | Nuve