Company: NMZ
Filing Date: 2025-07-07
Form Type: N-CSRS
Source: 0001193125-25-156000
Chunk: 17

Company: NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
Filing Date: 2025-07-07
Form: N-CSRS
Chunk 17
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iliated investments                                     |     |     |            — |   |     |     |            — |   |     |     |    (479,512 | ) |     |      |           — |   |     |      |           — |   |
| Net change in unrealized appreciation (depreciation)       |     |     | (146,167,989 | ) |     |     | (141,684,673 | ) |     |     | (60,870,339 | ) |     |      | (31,774,479 | ) |     |      | (26,176,197 | ) |
| Net realized and unrealized gain (loss)                    |     |     | (158,880,107 | ) |     |     | (142,214,259 | ) |     |     | (69,330,661 | ) |     |      | (33,942,643 | ) |     |      | (27,938,589 | ) |
| Net increase (decrease) in net assets applicable to common 
 shares from operations                                     |     | $   |  (98,621,843 | ) |     | $   |  (84,441,043 | ) |     | $   | (36,901,033 | ) |     | $    | (18,075,699 | ) |     | $    | (13,619,879 | ) |

See Notes to Financial Statements 177

Statement of Changes in Net Assets

| OPERATIONS                                                     |     | NVG              
 Unaudited        
 Six Months Ended 
 4/30/25          |               |   |     | Year Ended 
 10/31/24   |               |   |     | NZF              
 Unaudited        
 Six Months Ended 
 4/30/25          |               |   |     | Year Ended 
 10/31/24   |               |   |
|:---------------------------------------------------------------|:----|:-----------------|--------------:|:--|:----|:-----------|--------------:|:--|:----|:-----------------|--------------:|:--|:----|:-----------|--------------:|:--|
| Net investment income (loss)                                   |     | $                |    60,258,264 |   |     | $          |   111,107,092 |   |     | $                |    57,773,216 |   |