OmerosOMER
13F holders, Q2 2026 (June 30)171holders +9
32new positions
25sold out
3famous investors
$9.51avg. 13F price*
At the end of Q2 2026, 171 institutions reported holding Omeros Corp. (OMER) in their 13F filings, up 9 from Q1 2026. 32 opened new positions and 25 sold out. The largest holders were BlackRock, Inc. ($57.5M), Ingalls & Snyder LLC ($34.8M) and UBS Group AG ($29.9M). 3 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Omeros Corp.
- CUSIP
- 682143102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 32 | $24.0M |
| Exits | 25 | $12.2M |
All 13F filers, Q1 2026 → Q2 2026: 7,207,691 shares bought and 2,095,453 shares sold, net +5,112,238 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 171 holders
| BlackRock, Inc. | 0.00% | Add +13.8% | 6,044,633 | $57.5M |
| Ingalls & Snyder LLC | 0.95% | Add +2.8% | 3,659,523 | $34.8M |
| UBS Group AG | 0.00% | Add +34.5% | 3,148,384 | $29.9M |
| Vanguard Capital Management LLC | 0.00% | Add +3.0% | 3,072,050 | $29.2M |
| State Street Corp. | 0.00% | Add +20.9% | 2,319,906 | $22.1M |
| Geode Capital Management, LLC | 0.00% | Add +9.3% | 1,914,460 | $18.2M |
| Stifel Financial Corp. | 0.01% | Add +0.3% | 1,836,925 | $17.5M |
| Vanguard Portfolio Management LLC | 0.00% | Add +34.0% | 962,828 | $9.2M |
| Invesco Ltd. | 0.00% | Add +316.2% | 751,771 | $7.1M |
| Northern Trust Corp. | 0.00% | Add +29.0% | 727,348 | $6.9M |
| Rock Springs Capital Management LP | 0.33% | New | 718,499 | $6.8M |
| Corient Private Wealth LP | 0.01% | Reduce -17.7% | 659,730 | $6.3M |
| Rubric Capital Management LP | 0.06% | New | 656,874 | $6.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +3.8% | 604,633 | $5.8M |
| Bank of Montreal | 0.00% | Reduce 0.0% | 568,424 | $5.4M |
| Vanguard Fiduciary Trust Co. | 0.00% | Reduce -0.2% | 491,173 | $4.7M |
| Federated Hermes, Inc. | 0.01% | New | 478,290 | $4.5M |
| Clutterbuck Capital Management LLC | 2.46% | Add +50.0% | 450,000 | $4.3M |
| Two Sigma Investments, LP | 0.00% | Add +40.6% | 402,662 | $3.8M |
| Morgan Stanley | 0.00% | Add +24.1% | 394,459 | $3.8M |
| Millennium Management | 0.00% | Reduce -16.3% | 343,839 | $3.3M |
| Susquehanna International Group, LLP | 0.00% | Reduce -33.0% | 325,194 | $3.1M |
| Badgley Phelps Wealth Managers, LLC | 0.04% | No change | 263,556 | $2.5M |
| Wellington Management Group LLP | 0.00% | Add +9.2% | 204,541 | $1.9M |
| Bank of New York Mellon Corp | 0.00% | Add +17.9% | 195,990 | $1.9M |
| Bank of America Corp. | 0.00% | Reduce -5.2% | 194,140 | $1.8M |
| Nuveen, LLC | 0.00% | Add +10.2% | 169,952 | $1.6M |
| Ancora Advisors LLC | 0.03% | Add +46.7% | 168,750 | $1.6M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -22.6% | 157,008 | $1.5M |
| Wells Fargo & Company | 0.00% | Add +32.6% | 156,889 | $1.5M |
| Swiss National Bank | 0.00% | New | 137,300 | $1.3M |
| Virtus Investment Advisers, LLC | 0.29% | Add +395.6% | 133,129 | $1.3M |
| Caption Management, LLC | 0.05% | New | 130,000 | $1.2M |
| T. Rowe Price Associates Inc. | 0.00% | Add +20.7% | 129,550 | $1.2M |
| MML Investors Services, LLC | 0.00% | Add +104.9% | 118,175 | $1.1M |
| Ameriprise Financial Inc. | 0.00% | Reduce -0.4% | 117,456 | $1.1M |
| HighTower Advisors, LLC | 0.00% | Add +4.3% | 115,368 | $1.1M |
| Rhumbline Advisers | 0.00% | Add +7.3% | 110,271 | $1.0M |
| Brevan Howard Capital Management LP | 0.01% | Add +91.6% | 98,047 | $932K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Add +4.3% | 92,403 | $879K |
| Citadel Advisors | 0.00% | Reduce -67.1% | 85,594 | $814K |
| Coldstream Capital Management Inc. | 0.01% | Add +56.5% | 84,743 | $806K |
| Quantinno Capital Management LP | 0.00% | Add +36.1% | 83,786 | $797K |
| Balyasny Asset Management L.P. | 0.00% | Add +187.3% | 83,558 | $795K |
| Jupiter Asset Management Ltd. | 0.00% | New | 76,186 | $725K |
| California State Teachers Retirement System | 0.00% | Add +1918.4% | 75,730 | $720K |
| Deutsche Bank AG | 0.00% | Add +36.4% | 75,053 | $714K |
| Alliancebernstein L.P. | 0.00% | No change | 66,990 | $707K |
| Citigroup Inc. | 0.00% | Add +136.5% | 72,829 | $693K |
| Mindset Wealth Management, LLC | 0.13% | Add +18.7% | 70,600 | $671K |
| American Financial Group Inc. | 0.21% | No change | 64,113 | $610K |
| State of Wisconsin Investment Board | 0.00% | Add +411.4% | 60,339 | $574K |
| Group One Trading LLC | 0.02% | Add +52.0% | 58,697 | $558K |
| Vanguard Global Advisers, LLC | 0.00% | Add +36.2% | 56,019 | $533K |
| Squarepoint Ops LLC | 0.00% | New | 55,030 | $523K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +9655.4% | 53,362 | $507K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | New | 47,769 | $454K |
| Barclays PLC | 0.00% | Add +5.0% | 47,157 | $448K |
| NFSG Corp | 0.05% | Reduce -3.1% | 46,210 | $439K |
| Headlands Technologies LLC | 0.05% | Reduce -9.1% | 45,401 | $432K |
| Legal & General Group Plc | 0.00% | Add +636.4% | 44,686 | $425K |
| JPMorgan Chase & Co. | 0.00% | Add +1.3% | 42,247 | $419K |
| MetLife Investment Management, LLC | 0.00% | Add +12.6% | 43,510 | $414K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Add +5302.4% | 42,841 | $407K |
| Prudential Financial Inc. | 0.00% | Add +228.4% | 42,385 | $403K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | Reduce -55.0% | 41,755 | $397K |
| International Assets Investment Management, LLC | 0.02% | Add +596.5% | 40,400 | $380K |
| Fifth Third Bancorp | 0.00% | No change | 39,000 | $371K |
| Optimize Financial Inc. | 0.13% | Reduce -0.3% | 38,274 | $364K |
| Sound Capital Solutions LLC | 0.09% | — | 38,274 | $364K |
| Cerity Partners LLC | 0.00% | Add +17.7% | 37,188 | $354K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +4.8% | 33,217 | $316K |
| LPL Financial LLC | 0.00% | Add +68.5% | 33,033 | $314K |
| Diametric Capital, LP | 0.03% | Add +12.6% | 33,010 | $314K |
| Compass Financial Management LLC | 0.04% | — | 32,815 | $312K |
| Focus Partners Wealth | 0.00% | Reduce -33.3% | 31,723 | $302K |
| Brighton Jones LLC | 0.01% | Reduce -0.9% | 31,597 | $300K |
| Avantax Planning Partners, Inc. | 0.01% | Add +47.4% | 31,100 | $296K |
| Jupiter Topco LLC | 0.00% | — | 30,500 | $290K |
| Russell Investments Group, Ltd. | 0.00% | Add +116.3% | 30,282 | $288K |
| AQR Capital Management | 0.00% | Reduce -1.5% | 29,726 | $283K |
| Bridgeway Capital Management, LLC | 0.00% | No change | 27,000 | $257K |
| Merit Financial Group, LLC | 0.00% | Reduce -0.6% | 26,840 | $255K |
| Profund Advisors LLC | 0.01% | Add +27.5% | 26,319 | $250K |
| Atom Investors LP | 0.02% | New | 23,945 | $228K |
| Creative Planning | 0.00% | Add +10.6% | 23,282 | $221K |
| Axq Capital, LP | 0.02% | Reduce -40.1% | 23,246 | $221K |
| Harbour Investments, Inc. | 0.00% | Add +5.1% | 23,139 | $220K |
| Stordahl Capital Management, Inc. | 0.04% | No change | 22,860 | $217K |
| State of New Jersey Common Pension Fund D | 0.00% | New | 22,115 | $210K |
| Intech Investment Management LLC | 0.00% | Add +19.7% | 21,869 | $208K |
| New York State Common Retirement Fund | 0.00% | No change | 20,713 | $197K |
| Jane Street Group, LLC | 0.00% | Reduce -86.1% | 20,166 | $192K |
| DeepCurrents Investment Group LLC | 0.24% | Add +64.6% | 19,971 | $190K |
| Rafferty Asset Management, LLC | 0.00% | Add +58.4% | 19,474 | $185K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +17.8% | 19,265 | $183K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +2.8% | 18,965 | $180K |
| Arizona State Retirement System | 0.00% | New | 18,873 | $179K |
| Pictet Asset Management Holding SA | 0.00% | New | 18,029 | $171K |
| Vanguard Investments Australia, Ltd. | 0.00% | New | 17,295 | $164K |
"% of holder's portfolio" is OMER's weight in each manager's 13F, not the share of Omeros Corp. the manager owns.