MFS SERIES TRUST I registered fund series on Form 485APOS, filed 2015-10-29. Featured series: MFS U.S. Government Cash Reserve Fund.
| Series | Class | Ticker | New |
|---|---|---|---|
| MFS U.S. Government Cash Reserve Fund | A | MSRXX | — |
| MFS U.S. Government Cash Reserve Fund | 529B | MRBXX | — |
| MFS U.S. Government Cash Reserve Fund | 529C | MRCXX | — |
| MFS U.S. Government Cash Reserve Fund | B | MCRXX | — |
| MFS U.S. Government Cash Reserve Fund | C | MCCXX | — |
| MFS U.S. Government Cash Reserve Fund | R1 | CRVXX | — |
| MFS U.S. Government Cash Reserve Fund | R2 | CRMXX | — |
| MFS U.S. Government Cash Reserve Fund | R3 | CRJXX | — |
| MFS U.S. Government Cash Reserve Fund | R4 | CRKXX | — |
| MFS U.S. Government Cash Reserve Fund | 529A | MACXX | — |
The funds investment objective is to seek current income consistent with preservation of capital and liquidity.