X0101 24F-2NT LIVE 783740 XXXXXXXX false N-1A MFS Series Trust X 111 Huntington Avenue Boston MA X1 02199 MFS AGGRESSIVE GROWTH ALLOCATION FUND S000002506 true MFS MODERATE ALLOCATION FUND S000002507 true MFS CONSERVATIVE ALLOCATION FUND S000002510 true MFS EMERGING MARKETS EQUITY FUND S000002512 true MFS GROWTH ALLOCATION FUND S000002514 true MFS INTERNATIONAL DIVERSIFICATION FUND S000002515 true MFS INTERNATIONAL GROWTH FUND S000002516 true MFS INTERNATIONAL INTRINSIC VALUE FUND S000002517 true MFS MANAGED WEALTH FUND S000045806 true MFS BLENDED RESEARCH GROWTH EQUITY FUND S000050658 true MFS BLENDED RESEARCH SMALL CAP EQUITY FUND S000050659 true MFS BLENDED RESEARCH VALUE EQUITY FUND S000050660 true MFS BLENDED RESEARCH MID CAP EQUITY FUND S000054892 true MFS INTERNATIONAL LARGE CAP VALUE FUND S000068882 true 811-4492 033-01657 05/31/2024 false false 22666056862.00 23643960068.00 0.00 23643960068.00 0.00 (977903206.00) 0.0001476 0.00 0 0.00 David L. DiLorenzo David L. DiLorenzo President 08/14/2024