X0101 24F-2NT LIVE 798244 XXXXXXXX false N-1A MFS Series Trust I 111 Huntington Avenue Boston MA X1 02199 MFS U.S. GOVERNMENT CASH RESERVE FUND S000000762 A C000002179 B C000002182 C C000002183 R1 C000002184 R2 C000002186 R3 C000002187 R4 C000002188 R6 C000206004 I C000206005 MFS CORE EQUITY FUND S000000763 A C000002190 R4 C000002191 B C000002192 C C000002193 I C000002194 R1 C000002196 R2 C000002198 R3 C000002199 R6 C000124424 MFS NEW DISCOVERY FUND S000000765 A C000002210 R4 C000002211 B C000002215 C C000002216 I C000002217 R1 C000002219 R2 C000002221 R3 C000002222 R6 C000075013 MFS RESEARCH INTERNATIONAL FUND S000000766 A C000002223 R4 C000002224 B C000002228 C C000002229 I C000002230 R1 C000002232 R2 C000002234 R3 C000002235 R6 C000034436 MFS TECHNOLOGY FUND S000000768 A C000002249 R4 C000002250 B C000002251 C C000002252 I C000002253 R1 C000002255 R2 C000002257 R3 C000002258 R6 C000124425 MFS VALUE FUND S000000769 A C000002259 R4 C000002260 B C000002264 C C000002265 I C000002266 R1 C000002268 R2 C000002270 R3 C000002271 R6 C000033014 MFS LOW VOLATILITY EQUITY FUND S000042701 A C000132013 B C000132014 C C000132015 I C000132016 R1 C000132017 R2 C000132018 R3 C000132019 R4 C000132020 R6 C000132021 MFS LOW VOLATILITY GLOBAL EQUITY FUND S000042702 A C000132022 B C000132023 C C000132024 I C000132025 R1 C000132026 R2 C000132027 R3 C000132028 R4 C000132029 R6 C000132030 811-4777 033-07638 08/31/2024 false false 15397474406.00 19962881443.00 837127457.00 20800008900.00 0.00 (5402534494.00) 0.0001531 0.00 0 0.00 David L. DiLorenzo David L. DiLorenzo President 11/05/2024