MFS SERIES TRUST XII (CIK 1330967) is an SEC-registered fund company with 12 reporting fund series and $5.2B in net assets as of 2026-04-30.
| Series | Net assets |
|---|---|
| MFS Lifetime 2040 Fund | $834.3M |
| MFS Lifetime 2030 Fund | $688.3M |
| MFS Lifetime 2035 Fund | $639.9M |
| MFS Lifetime 2050 Fund | $621.1M |
| MFS Lifetime 2045 Fund | $562.8M |
| MFS Lifetime Income Fund | $502.7M |
| MFS Lifetime 2055 Fund | $453.1M |
| MFS Lifetime 2025 Fund | $286.5M |
| MFS Lifetime 2060 Fund | $272.3M |
| MFS Lifetime 2020 Fund | $269.6M |
| MFS Lifetime 2065 Fund | $52.4M |
| MFS Core Bond Fund | $33.8M |