Who Owns OMEROS (OMER)? -- Institutional Holders (2026-06-30)

197 institutions reported holding $511.1M of OMEROS (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.

RankInstitutionValueSharesChange
1BlackRock, Inc.$57.5M6.0MAdded
2VANGUARD GROUP INC$44.2M4.6MAdded
3INGALLS & SNYDER LLC$34.8M3.7MAdded
4D. E. Shaw & Co., Inc.$34.7M0Added
5UBS Group AG$29.9M3.1MAdded
6Affinity Asset Advisors, LLC$25.6M1.4MAdded
7STATE STREET CORP$22.1M2.3MAdded
8SUSQUEHANNA INTERNATIONAL GROUP, LLP$21.1M2.2MAdded
9DeepCurrents Investment Group LLC$18.6M19,971Trimmed
10GEODE CAPITAL MANAGEMENT, LLC$18.2M1.9MAdded
11WHITEBOX ADVISORS LLC$17.7M0Trimmed
12STIFEL FINANCIAL CORP$17.5M1.8MAdded
13Context Capital Management, LLC$16.3M0Trimmed
14Clutterbuck Capital Management LLC$12.0M4.6MAdded
15CITADEL ADVISORS LLC$7.9M829,994Added
16Invesco Ltd.$7.1M751,771Added
17NORTHERN TRUST CORP$6.9M727,348Added
18Rock Springs Capital Management LP$6.8M718,499New
19Corient Private Wealth LLC$6.3M659,730Trimmed
20Rubric Capital Management LP$6.2M656,874New
21Caption Management, LLC$5.8M614,500New
22Sixth Street Partners Management Company, L.P.$5.8M604,633New
23CHARLES SCHWAB INVESTMENT MANAGEMENT INC$5.8M604,633Added
24BANK OF MONTREAL /CAN/$5.4M568,424Trimmed
25FEDERATED HERMES, INC.$4.5M478,290New

Source: SEC Form 13F filings · as of 2026-06-30