1 institutions reported holding $7,391 of MFS RESEARCH FUND-CL A (MFRFX) in SEC 13F filings for 2026-06-30. Largest institutional holders: McMillan Office, Inc. ($7,391). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | McMillan Office, Inc. | $7,391 | 124 | Hold |
Source: SEC Form 13F filings · as of 2026-06-30