Who Owns OMEROS CORP (OMER)? -- Institutional Holders (2026-06-30)
195 institutions reported holding $509.9M of OMEROS CORP (OMER) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($57.5M), VANGUARD GROUP INC ($44.2M), INGALLS & SNYDER LLC ($34.8M), D. E. Shaw & Co., Inc. ($34.7M), UBS Group AG ($29.9M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | BlackRock, Inc. | $57.5M | 6.0M | Added |
| 2 | VANGUARD GROUP INC | $44.2M | 4.6M | Added |
| 3 | INGALLS & SNYDER LLC | $34.8M | 3.7M | Added |
| 4 | D. E. Shaw & Co., Inc. | $34.7M | 0 | Added |
| 5 | UBS Group AG | $29.9M | 3.1M | Added |
| 6 | Affinity Asset Advisors, LLC | $25.6M | 1.4M | Added |
| 7 | STATE STREET CORP | $22.1M | 2.3M | Added |
| 8 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $21.1M | 2.2M | Added |
| 9 | DeepCurrents Investment Group LLC | $18.6M | 19,971 | Trimmed |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | $18.2M | 1.9M | Added |
| 11 | WHITEBOX ADVISORS LLC | $17.7M | 0 | Trimmed |
| 12 | STIFEL FINANCIAL CORP | $17.5M | 1.8M | Added |
| 13 | Context Capital Management, LLC | $16.3M | 0 | Trimmed |
| 14 | Clutterbuck Capital Management LLC | $12.0M | 4.6M | Added |
| 15 | CITADEL ADVISORS LLC | $7.9M | 829,994 | Added |
| 16 | Invesco Ltd. | $7.1M | 751,771 | Added |
| 17 | NORTHERN TRUST CORP | $6.9M | 727,348 | Added |
| 18 | Rock Springs Capital Management LP | $6.8M | 718,499 | New |
| 19 | Corient Private Wealth LLC | $6.3M | 659,730 | Trimmed |
| 20 | Rubric Capital Management LP | $6.2M | 656,874 | New |
| 21 | Caption Management, LLC | $5.8M | 614,500 | New |
| 22 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $5.8M | 604,633 | Added |
| 23 | Sixth Street Partners Management Company, L.P. | $5.8M | 604,633 | New |
| 24 | BANK OF MONTREAL /CAN/ | $5.4M | 568,424 | Trimmed |
| 25 | FEDERATED HERMES, INC. | $4.5M | 478,290 | New |
Source: SEC Form 13F filings · as of 2026-06-30