OmerosOMER
13F holders, Q1 2026 (March 31)162holders +11
32new positions
20sold out
4famous investors
$10.58avg. 13F price*
At the end of Q1 2026, 162 institutions reported holding Omeros Corp. (OMER) in their 13F filings, up 11 from Q4 2025. 32 opened new positions and 20 sold out. The largest holders were BlackRock, Inc. ($56.1M), Ingalls & Snyder LLC ($37.6M) and Vanguard Capital Management LLC ($31.5M). 4 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Omeros Corp.
- CUSIP
- 682143102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 32 | $6.8M |
| Exits | 20 | $11.5M |
All 13F filers, Q4 2025 → Q1 2026: 2,596,409 shares bought and 4,100,490 shares sold, net −1,504,081 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 162 holders
| BlackRock, Inc. | 0.00% | Add +4.9% | 5,309,626 | $56.1M |
| Ingalls & Snyder LLC | 1.34% | Add +3.2% | 3,559,423 | $37.6M |
| Vanguard Capital Management LLC | 0.00% | — | 2,983,259 | $31.5M |
| UBS Group AG | 0.00% | Add +5.3% | 2,340,731 | $24.7M |
| State Street Corp. | 0.00% | Add +22.0% | 1,919,575 | $20.3M |
| Stifel Financial Corp. | 0.02% | Add +1.2% | 1,831,585 | $19.3M |
| Geode Capital Management, LLC | 0.00% | Add +7.4% | 1,752,323 | $18.5M |
| Corient Private Wealth LP | 0.01% | Add +16.5% | 801,411 | $8.5M |
| Vanguard Portfolio Management LLC | 0.00% | — | 718,675 | $7.6M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -1.8% | 582,512 | $6.2M |
| Bank of Montreal | 0.00% | Reduce -5.5% | 568,426 | $6.0M |
| Northern Trust Corp. | 0.00% | Add +7.0% | 563,867 | $6.0M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 492,345 | $5.2M |
| Susquehanna International Group, LLP | 0.01% | Reduce -34.6% | 485,030 | $5.1M |
| Millennium Management | 0.00% | Reduce -7.1% | 410,609 | $4.3M |
| Morgan Stanley | 0.00% | Reduce -17.7% | 317,892 | $3.4M |
| Clutterbuck Capital Management LLC | 1.93% | Add +100.0% | 300,000 | $3.2M |
| Two Sigma Investments, LP | 0.00% | Reduce -45.4% | 286,474 | $3.0M |
| Badgley Phelps Wealth Managers, LLC | 0.06% | No change | 263,556 | $2.8M |
| Citadel Advisors | 0.00% | Add +8.2% | 260,048 | $2.7M |
| Bank of America Corp. | 0.00% | Add +78.4% | 204,805 | $2.2M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -10.7% | 202,893 | $2.1M |
| Polar Asset Management Partners Inc. | 0.07% | Add +190.7% | 200,000 | $2.1M |
| Jump Financial, LLC | 0.03% | Reduce -14.1% | 195,824 | $2.1M |
| Wellington Management Group LLP | 0.00% | Reduce -7.6% | 187,300 | $2.0M |
| Invesco Ltd. | 0.00% | Add +16.7% | 180,629 | $1.9M |
| Dimensional Fund Advisors LP | 0.00% | Add +85.3% | 179,594 | $1.9M |
| Prosight Management, LP | 0.30% | New | 174,800 | $1.8M |
| Bank of New York Mellon Corp | 0.00% | Add +0.3% | 166,246 | $1.8M |
| Nuveen, LLC | 0.00% | Add +0.7% | 154,201 | $1.6M |
| Jane Street Group, LLC | 0.00% | Reduce -68.7% | 145,307 | $1.5M |
| Wells Fargo & Company | 0.00% | Reduce -28.4% | 118,343 | $1.2M |
| Ameriprise Financial Inc. | 0.00% | Add +0.8% | 117,948 | $1.2M |
| Ancora Advisors LLC | 0.03% | Add +94.1% | 115,000 | $1.2M |
| HighTower Advisors, LLC | 0.00% | Add +6.3% | 110,630 | $1.2M |
| Alliancebernstein L.P. | 0.00% | Reduce -8.8% | 66,990 | $1.2M |
| T. Rowe Price Associates Inc. | 0.00% | Add +12.1% | 107,293 | $1.1M |
| Rhumbline Advisers | 0.00% | Add +2.7% | 102,818 | $1.1M |
| Susquehanna Portfolio Strategies, LLC | 0.01% | No change | 92,759 | $980K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Add +8.5% | 88,568 | $935K |
| Marshall Wace, LLP | 0.00% | New | 83,682 | $884K |
| D. E. Shaw & Co. | 0.00% | Reduce -90.6% | 71,168 | $752K |
| American Financial Group Inc. | 0.25% | No change | 64,113 | $677K |
| Quantinno Capital Management LP | 0.00% | Add +145.4% | 61,541 | $650K |
| Mindset Wealth Management, LLC | 0.17% | Add +14.4% | 59,500 | $628K |
| MML Investors Services, LLC | 0.00% | Reduce -25.9% | 57,675 | $609K |
| BNP Paribas Financial Markets | 0.00% | Add +248.0% | 56,908 | $601K |
| Deutsche Bank AG | 0.00% | Add +13.0% | 55,030 | $581K |
| Coldstream Capital Management Inc. | 0.01% | Add +1.0% | 54,130 | $572K |
| Brevan Howard Capital Management LP | 0.01% | Reduce -21.2% | 51,163 | $540K |
| Headlands Technologies LLC | 0.06% | New | 49,926 | $527K |
| NFSG Corp | 0.08% | Add +39.1% | 47,710 | $504K |
| Focus Partners Wealth | 0.00% | Add +53.3% | 47,582 | $502K |
| Barclays PLC | 0.00% | Reduce -62.7% | 44,922 | $474K |
| Vanguard Global Advisers, LLC | 0.00% | — | 41,121 | $434K |
| Fifth Third Bancorp | 0.00% | Add +3800.0% | 39,000 | $412K |
| Axq Capital, LP | 0.05% | Add +33.1% | 38,815 | $410K |
| JPMorgan Chase & Co. | 0.00% | Add +12.2% | 41,720 | $409K |
| MetLife Investment Management, LLC | 0.00% | Add +6.7% | 38,634 | $408K |
| Group One Trading LLC | 0.01% | Reduce -71.0% | 38,604 | $408K |
| Optimize Financial Inc. | 0.20% | New | 38,407 | $406K |
| Nomura Holdings Inc. | 0.00% | Reduce -94.2% | 38,237 | $404K |
| Simplex Trading, LLC | 0.01% | Reduce -69.7% | 37,526 | $396K |
| Walleye Capital LLC | 0.00% | Reduce -68.6% | 34,533 | $365K |
| Acadian Asset Management LLC | 0.00% | New | 32,778 | $345K |
| Brighton Jones LLC | 0.01% | New | 31,880 | $337K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +3.6% | 31,701 | $335K |
| Cerity Partners LLC | 0.00% | Add +3.7% | 31,586 | $334K |
| Citigroup Inc. | 0.00% | Add +12.0% | 30,790 | $325K |
| AQR Capital Management | 0.00% | Add +32.1% | 30,178 | $319K |
| Diametric Capital, LP | 0.08% | New | 29,322 | $310K |
| Balyasny Asset Management L.P. | 0.00% | New | 29,083 | $307K |
| Vontobel Holding Ltd. | 0.00% | Add +422.0% | 28,450 | $300K |
| Bridgeway Capital Management, LLC | 0.01% | Reduce -52.4% | 27,000 | $285K |
| Merit Financial Group, LLC | 0.00% | New | 26,993 | $285K |
| Virtus Investment Advisers, LLC | 0.08% | Add +2.5% | 26,865 | $284K |
| Gsa Capital Partners LLP | 0.02% | New | 23,967 | $253K |
| Farallon Capital Management, L.L.C. | 0.00% | No change | 23,000 | $243K |
| Stordahl Capital Management, Inc. | 0.05% | No change | 22,860 | $241K |
| Harbour Investments, Inc. | 0.00% | Add +0.9% | 22,025 | $233K |
| Avantax Planning Partners, Inc. | 0.01% | Add +59.9% | 21,100 | $223K |
| Creative Planning | 0.00% | Add +24.4% | 21,047 | $222K |
| New York State Common Retirement Fund | 0.00% | No change | 20,713 | $219K |
| Profund Advisors LLC | 0.01% | Add +44.1% | 20,647 | $218K |
| LPL Financial LLC | 0.00% | New | 19,608 | $207K |
| China Universal Asset Management Co., Ltd. | 0.02% | Add +14.7% | 18,982 | $200K |
| FMR LLC | 0.00% | Add +3.4% | 18,677 | $197K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -7.0% | 18,454 | $195K |
| Intech Investment Management LLC | 0.00% | Reduce -39.0% | 18,276 | $193K |
| Apella Capital, LLC | 0.00% | No change | 14,288 | $192K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Reduce -44.9% | 17,475 | $190K |
| Breakwater Investment Management | 0.07% | No change | 17,048 | $180K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 16,360 | $173K |
| XTX Topco Ltd | 0.00% | New | 15,251 | $161K |
| nVerses Capital, LLC | 0.14% | New | 14,404 | $152K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -0.1% | 13,998 | $148K |
| Canada Pension Plan Investment Board | 0.00% | Reduce -35.9% | 13,900 | $147K |
| Sei Investments Co. | 0.00% | Reduce -58.5% | 13,171 | $139K |
| ProShare Advisors LLC | 0.00% | Reduce -13.5% | 13,118 | $139K |
| Prudential Financial Inc. | 0.00% | New | 12,905 | $136K |
"% of holder's portfolio" is OMER's weight in each manager's 13F, not the share of Omeros Corp. the manager owns.