EATON VANCE MUTUAL FUNDS TRUST 0000745463 497 2023-09-30 N-1A false 0000745463 2023-09-30 2023-09-30 0000745463 fil:S000026932Member 2023-09-30 2023-09-30

EATON VANCE TOTAL RETURN BOND FUND
(the “Fund”)
Supplement to Prospectus and Summary Prospectus dated February 1, 2024

 

Effective May 1, 2024, in accordance with regulatory changes requiring the Fund’s primary benchmark to represent the overall applicable market, the Fund’s primary benchmark is now the Bloomberg US Universal Index.

References to other benchmark indexes in the Fund’s prospectus remain in effect. These additional index(es) provide a means to compare the Fund’s average annual returns to a benchmark that Boston Management and Research believes is representative of the Fund’s investment universe.

 

May 1, 2024

43609 5.1.24

 


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