6 institutions reported holding $13.3M of COLLEGIUM PHARMACEUTICAL INC COM (COLL) in SEC 13F filings for 2026-06-30. Largest institutional holders: Assenagon Asset Management S.A. ($11.2M), EASTERN BANK ($2.0M), GAMMA Investing LLC ($104,473), Versant Capital Management, Inc ($59,223), MassMutual Private Wealth & Trust, FSB ($10,317). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Assenagon Asset Management S.A. | $11.2M | 308,917 | Trimmed |
| 2 | EASTERN BANK | $2.0M | 54,843 | Hold |
| 3 | GAMMA Investing LLC | $104,473 | 2,886 | Trimmed |
| 4 | Versant Capital Management, Inc | $59,223 | 1,636 | Added |
| 5 | MassMutual Private Wealth & Trust, FSB | $10,317 | 285 | Hold |
| 6 | Cedar Mountain Advisors, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30