OmerosOMER
13F holders, Q3 2025 (September 30)133holders +6
14new positions
9sold out
5famous investors
$4.10avg. 13F price*
At the end of Q3 2025, 133 institutions reported holding Omeros Corp. (OMER) in their 13F filings, up 6 from Q2 2025. 14 opened new positions and 9 sold out. The largest holders were BlackRock, Inc. ($18.3M), Ingalls & Snyder LLC ($16.8M) and Vanguard Group Inc. ($13.7M). 5 famous investors held it, including David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Omeros Corp.
- CUSIP
- 682143102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 14 | $6.6M |
| Exits | 9 | $532K |
All 13F filers, Q2 2025 → Q3 2025: 5,692,596 shares bought and 1,948,425 shares sold, net +3,744,171 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 133 holders
| BlackRock, Inc. | 0.00% | Add +9.9% | 4,452,156 | $18.3M |
| Ingalls & Snyder LLC | 0.55% | Add +3.1% | 4,106,598 | $16.8M |
| Vanguard Group Inc. | 0.00% | Add +1.9% | 3,346,958 | $13.7M |
| Morgan Stanley | 0.00% | Add +46.8% | 1,989,734 | $8.2M |
| Stifel Financial Corp. | 0.01% | Add +19.0% | 1,812,275 | $7.4M |
| Geode Capital Management, LLC | 0.00% | Add +12.1% | 1,535,371 | $6.3M |
| Polar Asset Management Partners Inc. | 0.18% | New | 1,498,586 | $6.1M |
| State Street Corp. | 0.00% | Add +3.3% | 1,239,728 | $5.1M |
| D. E. Shaw & Co. | 0.00% | Reduce -39.0% | 1,005,235 | $4.1M |
| Two Sigma Investments, LP | 0.01% | Add +39.3% | 933,314 | $3.8M |
| UBS Group AG | 0.00% | Reduce -18.4% | 709,089 | $2.9M |
| Corient Private Wealth LP | 0.00% | Add +14.7% | 608,762 | $2.5M |
| Two Sigma Advisers, LP | 0.00% | Add +36.8% | 578,200 | $2.4M |
| Bank of Montreal | 0.00% | Reduce -1.4% | 563,095 | $2.3M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +15.4% | 553,467 | $2.3M |
| Royal Bank of Canada | 0.00% | Add +7.9% | 543,676 | $2.2M |
| Northern Trust Corp. | 0.00% | Add +10.5% | 535,695 | $2.2M |
| Marshall Wace, LLP | 0.00% | Reduce -37.4% | 464,178 | $1.9M |
| JPMorgan Chase & Co. | 0.00% | Add +1201.1% | 416,153 | $1.7M |
| Millennium Management | 0.00% | Add +49.1% | 401,814 | $1.6M |
| Citadel Advisors | 0.00% | Add +149.3% | 393,228 | $1.6M |
| Renaissance Technologies | 0.00% | Reduce -10.0% | 344,500 | $1.4M |
| Goldman Sachs Group Inc. | 0.00% | Add +32.3% | 336,087 | $1.4M |
| Jane Street Group, LLC | 0.00% | Add +229.2% | 281,087 | $1.2M |
| Bank of America Corp. | 0.00% | Add +9.8% | 275,418 | $1.1M |
| Badgley Phelps Wealth Managers, LLC | 0.02% | Add +117.0% | 263,556 | $1.1M |
| Wellington Management Group LLP | 0.00% | Add +19.0% | 194,447 | $797K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | Add +20.4% | 171,088 | $701K |
| Bank of New York Mellon Corp | 0.00% | Add +9.8% | 162,345 | $666K |
| Squarepoint Ops LLC | 0.00% | Add +75.8% | 155,496 | $638K |
| NFSG Corp | 0.08% | Add +44.0% | 134,510 | $551K |
| Wells Fargo & Company | 0.00% | Add +9.6% | 134,104 | $550K |
| Barclays PLC | 0.00% | Add +5.7% | 131,948 | $541K |
| Brevan Howard Capital Management LP | 0.01% | Add +22.9% | 129,393 | $531K |
| Invesco Ltd. | 0.00% | Add +4.6% | 122,075 | $501K |
| DeepCurrents Investment Group LLC | 1.09% | Reduce -77.1% | 120,918 | $496K |
| Ameriprise Financial Inc. | 0.00% | No change | 116,536 | $478K |
| Susquehanna International Group, LLP | 0.00% | Reduce -4.8% | 110,579 | $453K |
| Rhumbline Advisers | 0.00% | Add +7.1% | 105,873 | $434K |
| Group One Trading LLC | 0.01% | Reduce -17.4% | 98,297 | $403K |
| HighTower Advisors, LLC | 0.00% | Add +37.6% | 95,184 | $390K |
| T. Rowe Price Associates Inc. | 0.00% | Add +16.6% | 89,528 | $368K |
| BNP Paribas Financial Markets | 0.00% | Add +248.7% | 88,117 | $361K |
| Nuveen, LLC | 0.00% | No change | 87,618 | $359K |
| Alliancebernstein L.P. | 0.00% | No change | 67,590 | $277K |
| American Financial Group Inc. | 0.10% | No change | 64,113 | $263K |
| Mindset Wealth Management, LLC | 0.07% | No change | 60,000 | $246K |
| MML Investors Services, LLC | 0.00% | Add +19.4% | 59,175 | $243K |
| Bridgeway Capital Management, LLC | 0.01% | Add +78.8% | 56,715 | $233K |
| Atom Investors LP | 0.02% | Add +339.0% | 53,266 | $218K |
| SG Americas Securities, LLC | 0.00% | Add +99.7% | 45,324 | $186K |
| Nomura Holdings Inc. | 0.00% | Reduce -50.6% | 43,681 | $179K |
| Cypress Capital Group | 0.02% | No change | 42,000 | $172K |
| Deutsche Bank AG | 0.00% | Add +16.3% | 40,803 | $167K |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 0.00% | No change | 40,500 | $166K |
| Brooklyn Investment Group | 0.02% | No change | 49,197 | $157K |
| Comerica Bank | 0.00% | No change | 35,000 | $144K |
| Graham Capital Management, L.P. | 0.01% | Reduce -65.7% | 34,459 | $141K |
| Apella Capital, LLC | 0.00% | No change | 14,288 | $140K |
| State of Wisconsin Investment Board | 0.00% | New | 33,678 | $138K |
| Brighton Jones LLC | 0.00% | Add +2.5% | 31,539 | $129K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +11.2% | 29,097 | $129K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -5.2% | 30,186 | $124K |
| Cerity Partners LLC | 0.00% | Add +0.2% | 28,700 | $118K |
| Wolverine Trading, LLC | 0.00% | Add +48.5% | 25,971 | $109K |
| Coldstream Capital Management Inc. | 0.00% | Reduce -3.7% | 25,830 | $106K |
| Intech Investment Management LLC | 0.00% | Reduce -24.8% | 25,643 | $105K |
| Stordahl Capital Management, Inc. | 0.02% | Reduce -30.0% | 22,860 | $94K |
| Simplex Trading, LLC | 0.00% | New | 22,220 | $91K |
| China Universal Asset Management Co., Ltd. | 0.01% | Add +86.3% | 21,929 | $90K |
| Quadrature Capital Ltd | 0.00% | New | 21,533 | $88K |
| AQR Capital Management | 0.00% | Add +53.7% | 21,306 | $87K |
| MetLife Investment Management, LLC | 0.00% | Reduce -39.7% | 20,504 | $84K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -3.2% | 19,898 | $82K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Add +18.2% | 18,219 | $75K |
| Quantinno Capital Management LP | 0.00% | New | 18,208 | $75K |
| SPC Financial, Inc. | 0.01% | No change | 17,400 | $71K |
| Breakwater Investment Management | 0.03% | No change | 17,048 | $70K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +39.6% | 16,360 | $67K |
| Walleye Capital LLC | 0.00% | Add +553.1% | 14,923 | $61K |
| Walleye Trading LLC | 0.00% | New | 13,673 | $56K |
| ProShare Advisors LLC | 0.00% | Reduce -1.6% | 13,534 | $55K |
| Harbour Investments, Inc. | 0.00% | No change | 13,469 | $55K |
| FMR LLC | 0.00% | Add +13.3% | 13,190 | $54K |
| Sei Investments Co. | 0.00% | Reduce -2.3% | 13,114 | $54K |
| New York State Common Retirement Fund | 0.00% | No change | 11,413 | $47K |
| International Assets Investment Management, LLC | 0.00% | No change | 15,550 | $46K |
| Voya Investment Management LLC | 0.00% | Reduce -29.7% | 11,189 | $46K |
| B. Riley Wealth Advisors, Inc. | 0.00% | No change | 10,760 | $44K |
| Russell Investments Group, Ltd. | 0.00% | Add +113.1% | 10,695 | $44K |
| Sowell Financial Services LLC | 0.00% | Reduce -2.8% | 10,450 | $43K |
| Avantax Planning Partners, Inc. | 0.00% | No change | 10,100 | $41K |
| Gsa Capital Partners LLP | 0.00% | Reduce -73.8% | 10,004 | $41K |
| Legal & General Group Plc | 0.00% | Add +16.1% | 7,085 | $29K |
| Farther Finance Advisors, LLC | 0.00% | Reduce -18.6% | 6,102 | $25K |
| Osaic Holdings, Inc. | 0.00% | Add +5.2% | 5,609 | $23K |
| Citigroup Inc. | 0.00% | Reduce -75.7% | 5,517 | $23K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 5,027 | $21K |
| California State Teachers Retirement System | 0.00% | Add +0.1% | 4,056 | $17K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -74.4% | 3,428 | $14K |
"% of holder's portfolio" is OMER's weight in each manager's 13F, not the share of Omeros Corp. the manager owns.