Company: NMZ
Filing Date: 2025-01-06
Form Type: N-CSR
Source: 0001193125-25-002222
Chunk: 57

Company: NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
Filing Date: 2025-01-06
Form: N-CSR
Chunk 57
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 containing sufficient U.S. Government or U.S. Government agency securities, which ensure the timely payment of principal and interest. |

| (h) | Senior loans generally pay interest at rates which are periodically adjusted by reference to a base short-term, floating lending rate (Reference Rate) plus an assigned fixed rate (Spread). These floating lending rates are generally (i) the lending rate referenced by the Secured Overnight Financing Rate (“SOFR”), or (ii) the prime rate offered by one or more major United States banks. Senior loans may be considered restricted in that the Fund ordinarily is contractually obligated to receive approval from the agent bank and/or borrower prior to the disposition of a senior loan. The rate shown is the coupon as of the end of the reporting period. |

174

| (i) | Senior loans generally are subject to mandatory and/or optional prepayment. Because of these mandatory prepayment conditions and because there may be significant economic incentives for a borrower to prepay, prepayments of senior loans may occur. As a result, the actual remaining maturity of senior loans held may be substantially less than the stated maturities shown. |

| (j) | Senior loan received as part of the bondholder funding agreement during June 2023 for Pennsylvania Economic Development Financing Authority, Exempt Facilities Revenue Bonds, KDC Agribusiness Fairless Hills LLC Project, Series 2021A, 10.000%, 12/01/31. |

| (k) | Investment has a maturity of greater than one year, but has variable rate and/or demand features which qualify it as a short-term investment. The rate disclosed, as well as the reference rate and spread, where applicable, is that in effect as of the end of the reporting period. This rate changes periodically based on market conditions or a specified market index. |

| (l) | MFP Shares, Net as a percentage of Total Investments is 26.1%. |

| AMT |     | Alternative Minimum Tax                                                                                                                                         |
| 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 175 Statement of Assets and Liabilities

| October 31, 2024                                                |     |   |           NVG |   |     |   |           NZF |   |     |   |           NMZ |   |     |   |          NMCO |   |     |   |         NDM