Omeros Corp
OMER- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001285819
In the last 90 days, Omeros Corp insiders filed 0 open-market purchases and 6 sales; 171 institutions reported holding it in 13F filings for Q2 2026, worth $343.0M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Omeros Corp as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 162
- +15 vs. Q4 2025
- Shares held
- 30.8M
- +2.57M (+9.1%) vs. Q4 2025
- Total value
- $326.2M
- −$158.9M (−32.8%) vs. Q4 2025
- New holders
- 37
- 63 more added
- Sold out
- 22
- 40 more reduced
4 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting OMER on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 171 | $343.0M |
| Q1 2026 | 162 | $326.2M |
| Q4 2025 | 151 | $570.3M |
| Q3 2025 | 133 | $134.7M |
| Q2 2025 | 128 | $87.3M |
| Q1 2025 | 137 | $226.7M |
| Q4 2024 | 128 | $262.3M |
| Q3 2024 | 108 | $99.3M |
| Q2 2024 | 104 | $101.4M |
| Q1 2024 | 99 | $87.8M |
| Q4 2023 | 97 | $81.7M |
| Q3 2023 | 100 | $78.9M |
| Q2 2023 | 103 | $142.8M |
| Q1 2023 | 91 | $94.9M |
| Q4 2022 | 98 | $44.4M |
| Q3 2022 | 94 | $64.7M |
| Q2 2022 | 102 | $66.0M |
| Q1 2022 | 129 | $173.2M |
| Q4 2021 | 139 | $202.2M |
| Q3 2021 | 142 | $417.7M |
| Q2 2021 | 152 | $478.4M |
| Q1 2021 | 152 | $618.6M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Omeros Corp; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Nomura Holdings Inc | 38,237 | $403.8K | 0.00% | −616,784−94.2% | Reduced |
| Optimize Financial Inc | 38,407 | $405.6K | 0.20% | +38,407 | New |
| Group One Trading, L.P. | 38,604 | $407.7K | 0.01% | −94,665−71.0% | Reduced |
| MetLife Investment Management | 38,634 | $408.0K | 0.00% | +2,434+6.7% | Added |
| JPMorgan Chase & Co | 41,720 | $409.3K | 0.00% | +4,529+12.2% | Added |
| Axq Capital, LP | 38,815 | $409.9K | 0.05% | +9,664+33.2% | Added |
| Fifth Third Bancorp | 39,000 | $411.8K | 0.00% | +38,000+3,800.0% | Added |
| Vanguard Global Advisers, LLC | 41,121 | $434.2K | 0.00% | +41,121 | New |
| Barclays PLC | 44,922 | $474.4K | 0.00% | −75,568−62.7% | Reduced |
| Colony Group, LLC | 47,582 | $502.5K | 0.00% | +16,548+53.3% | Added |
| Newbridge Financial Services Group, Inc. | 47,710 | $503.8K | 0.08% | +13,400+39.1% | Added |
| Headlands Technologies LLC | 49,926 | $527.2K | 0.06% | +49,926 | New |
| Brevan Howard Capital Management LP | 51,163 | $540.3K | 0.01% | −13,794−21.2% | Reduced |
| Coldstream Capital Management Inc | 54,130 | $571.6K | 0.01% | +525+1.0% | Added |
| Deutsche Bank AG | 55,030 | $581.1K | 0.00% | +6,336+13.0% | Added |
| BNP Paribas Arbitrage, SA | 56,908 | $600.9K | 0.00% | +40,557+248.0% | Added |
| MML Investors Services, LLC | 57,675 | $609.0K | 0.00% | −20,200−25.9% | Reduced |
| Mindset Wealth Management, LLC | 59,500 | $628.3K | 0.17% | +7,500+14.4% | Added |
| Quantinno Capital Management LP | 61,541 | $649.9K | 0.00% | +36,467+145.4% | Added |
| American Financial Group Inc | 64,113 | $677.0K | 0.25% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 71,168 | $751.5K | 0.00% | −683,831−90.6% | Reduced |
| Marshall Wace, LLP | 83,682 | $883.7K | 0.00% | +83,682 | New |
| Cambridge Investment Research Advisors, Inc. | 88,568 | $935.0K | 0.00% | +6,925+8.5% | Added |
| Susquehanna Portfolio Strategies, LLC | 92,759 | $979.5K | 0.01% | 00.0% | Unchanged |
| Rhumbline Advisers | 102,818 | $1.09M | 0.00% | +2,713+2.7% | Added |
| Price T Rowe Associates Inc | 107,293 | $1.13M | 0.00% | +11,548+12.1% | Added |
| Alliancebernstein L.P. | 66,990 | $1.15M | 0.00% | −6,500−8.8% | Reduced |
| HighTower Advisors, LLC | 110,630 | $1.17M | 0.00% | +6,571+6.3% | Added |
| Ancora Advisors, LLC | 115,000 | $1.21M | 0.03% | +55,750+94.1% | Added |
| Ameriprise Financial Inc | 117,948 | $1.25M | 0.00% | +944+0.8% | Added |
| Wells Fargo & Company | 118,343 | $1.25M | 0.00% | −46,937−28.4% | Reduced |
| Jane Street Group, LLC | 145,307 | $1.53M | 0.00% | −318,315−68.7% | Reduced |
| Nuveen, LLC | 154,201 | $1.63M | 0.00% | +1,014+0.7% | Added |
| Bank of New York Mellon Corp | 166,246 | $1.76M | 0.00% | +464+0.3% | Added |
| Prosight Management, LP | 174,800 | $1.85M | 0.30% | +174,800 | New |
| Dimensional Fund Advisors LP | 179,594 | $1.90M | 0.00% | +82,646+85.2% | Added |
| Invesco Ltd. | 180,629 | $1.91M | 0.00% | +25,847+16.7% | Added |
| Wellington Management Group LLP | 187,300 | $1.98M | 0.00% | −15,317−7.6% | Reduced |
| Jump Financial, LLC | 195,824 | $2.07M | 0.03% | −32,176−14.1% | Reduced |
| Polar Asset Management Partners Inc. | 200,000 | $2.11M | 0.05% | +131,200+190.7% | Added |
| Goldman Sachs Group Inc | 202,893 | $2.14M | 0.00% | −24,401−10.7% | Reduced |
| Bank of America Corp | 204,805 | $2.16M | 0.00% | +89,997+78.4% | Added |
| Citadel Advisors LLC | 260,048 | $2.75M | 0.00% | +19,696+8.2% | Added |
| Badgley Phelps Wealth Managers, LLC | 263,556 | $2.78M | 0.06% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 286,474 | $3.03M | 0.00% | −238,283−45.4% | Reduced |
| Clutterbuck Capital Management LLC | 300,000 | $3.17M | 1.93% | +150,000+100.0% | Added |
| Morgan Stanley | 317,892 | $3.36M | 0.00% | −68,260−17.7% | Reduced |
| Millennium Management LLC | 410,609 | $4.34M | 0.00% | −31,202−7.1% | Reduced |
| Susquehanna International Group, LLP | 485,030 | $5.12M | 0.01% | −256,865−34.6% | Reduced |
| Vanguard Fiduciary Trust Co | 492,345 | $5.20M | 0.00% | +492,345 | New |
| Northern Trust Corp | 563,867 | $5.95M | 0.00% | +37,135+7.1% | Added |
| Bank of Montreal | 568,426 | $6.00M | 0.00% | −33,217−5.5% | Reduced |
| Charles Schwab Investment Management Inc | 582,512 | $6.15M | 0.00% | −10,710−1.8% | Reduced |
| Vanguard Portfolio Management LLC | 718,675 | $7.59M | 0.00% | +718,675 | New |
| CI Private Wealth, LLC | 801,411 | $8.46M | 0.01% | +113,386+16.5% | Added |
| Geode Capital Management, LLC | 1,752,323 | $18.5M | 0.00% | +120,973+7.4% | Added |
| Stifel Financial Corp | 1,831,585 | $19.3M | 0.02% | +21,819+1.2% | Added |
| State Street Corp | 1,919,575 | $20.3M | 0.00% | +346,049+22.0% | Added |
| UBS Group AG | 2,340,731 | $24.7M | 0.00% | +117,749+5.3% | Added |
| Vanguard Capital Management LLC | 2,983,259 | $31.5M | 0.00% | +2,983,259 | New |
| Ingalls & Snyder LLC | 3,559,423 | $37.6M | 1.33% | +110,724+3.2% | Added |
| BlackRock, Inc. | 5,309,626 | $56.1M | 0.00% | +247,188+4.9% | Added |
| EAM Investors, LLC | 0 | $0 | 0.00% | −207,480−100.0% | Sold out |
| Itau Unibanco Holding S.A. | 0 | $0 | 0.00% | −180,000−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −82,597−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −76,100−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −63,493−100.0% | Sold out |
| Cypress Capital Group | 0 | $0 | 0.00% | −42,000−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −27,099−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −20,082−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −18,825−100.0% | Sold out |
| AlphaCore Capital LLC | 0 | $0 | 0.00% | −17,647−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −30,920−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −13,222−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −12,667−100.0% | Sold out |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 0 | $0 | 0.00% | −10,500−100.0% | Sold out |
| Abel Hall, LLC | 0 | $0 | 0.00% | −10,240−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −5,255−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −2,069−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −1,433−100.0% | Sold out |
| Daiwa Securities Group Inc. | 0 | $0 | 0.00% | −191−100.0% | Sold out |
| Rocky Mountain Advisers, LLC | 0 | $0 | 0.00% | −50−100.0% | Sold out |
| Parkside Financial Bank & Trust | 0 | $0 | 0.00% | −40−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Kotler Kevin | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| Pandora Wealth, Inc. | – | – | – | – | Not filed |