1 institutions reported holding $518,914 of MFS SER TR IV MID CAP GROWTH I (OTCIX) in SEC 13F filings for 2026-03-31. Largest institutional holders: NORTHSTAR ASSET MANAGEMENT Co ($518,914). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | NORTHSTAR ASSET MANAGEMENT Co | $518,914 | 19,844 | Hold |
Source: SEC Form 13F filings · as of 2026-03-31