Company: NMZ
Filing Date: 2025-07-07
Form Type: N-CSRS
Source: 0001193125-25-156000
Chunk: 21

Company: NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
Filing Date: 2025-07-07
Form: N-CSRS
Chunk 21
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 2.98%(e) |
| 10/31/24   |     |     |                          2.65 |     |     3.11 |
| 10/31/23   |     |     |                          2.59 |     |     3.12 |
| 10/31/22   |     |     |                          0.93 |     |     1.21 |
| 10/31/21   |     |     |                          0.36 |     |     0.72 |
| 10/31/20   |     |     |                          0.66 |     |     0.10 |

| (d) | Unaudited. |

| (e) | Annualized. |

| (f) | Value rounded to zero. |

See Notes to Financial Statements 185

Financial Highlights (continuted) The following data is for a common share outstanding for each fiscal year end unless otherwise noted:

|             |     |                  |        |     | Investment Operations   |       |     |                      |         |     |       |         |     |      |         |     | Less Distributions to 
 Common Shareholders   |     |                |       |     |           |       |     |       |         |     | Common Share   |      |     |                |      |     |               |        |     |               |
|             |     | Common           
 Share Net Asset  
 Value, Beginning 
 of Period        |        |     | Net                     
 Investment Income (NII) 
 (Loss)(a)               |       |     | Net                  
 Realized/ Unrealized 
 Gain (Loss)          |         |     | Total |         |     | From 
 NII  |         |     |                       |     | From Net       
 Realized Gains |       |     | Return of 
 Capital   |       |     | Total |         |     | Shelf          
 Offering Costs |      |     | Premium        
 per Share      
 Sold through   
 Shelf Offering |      |     | Net Asset     
 Value, End of 
 Period        |        |     |         Share 
 Price, End of 
        Period |
| NDMO        |     |                  |        |     |                         |       |     |                      |         |     |       |         |     |      |         |     |                       |     |                |       |     |           |       |     |       |         |