Company: CIF
Filing Date: 2025-01-27
Form Type: N-CSR
Source: 0001683863-25-000338
Chunk: 6

Company: MFS INTERMEDIATE HIGH INCOME FUND
Filing Date: 2025-01-27
Form: N-CSR
Chunk 6
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 in the inside cover page of this Annual Report for additional details regarding the policy and related implications for the fund and shareholders. Respectfully, Portfolio Manager(s)
David Cole and Michael Skatrud

| (d) | Duration is a measure of how much a bond’s price is likely to fluctuate with general changes in interest rates, e.g., if rates rise 1.00%, a bond with a 5-year duration is 
 likely to lose about 5.00% of its value.                                                                                                                                    |

| (r) | Securities rated “BBB”, “Baa”, or higher are considered investment grade; securities rated “BB”, “Ba”, or below are considered                                                                                         
 non-investment grade. Ratings are assigned to underlying securities utilizing ratings from Moody's, Fitch, and Standard & Poor's and applying the following hierarchy: If all three agencies provide a rating, the     
 middle rating (after dropping the highest and lowest ratings) is assigned; if two of the three agencies rate a security, the lower of the two is assigned. If none of the 3 rating agencies above assign a rating, but 
 the security is rated by DBRS Morningstar, then the DBRS Morningstar rating is assigned. If none of the 4 rating agencies listed above rate the security, but the security is rated by the Kroll Bond Rating Agency    
 (KBRA), then the KBRA rating is assigned. Ratings are shown in the S&P and Fitch scale (e.g., AAA). For securities that are not rated by any of the rating agencies, the security is considered Not Rated.             |

| (y) | A yield curve graphically depicts the yields of different maturity bonds of the same credit quality and type; a normal yield curve is upward sloping, with short-term rates lower than 
 long-term rates.                                                                                                                                                                       |

The views expressed in this report are those of the portfolio manager(s) only through the end of the period of the report as stated on the cover and do not necessarily reflect the views of MFS or any other person in the MFS organization. These views are subject to change at any time based on market or other conditions, and MFS disclaims any responsibility to update such views. These

4

Management Review - continued

views may not be relied upon as investment advice
or an indication of trading intent on behalf of any MFS portfolio. References to specific securities are not recommendations of such securities, and may not be representative of any MFS portfolio’s current or
future investments.