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 |
|---|---|---|---|---|---|
| Covestor Ltd | 10 | $0 | 0.00% | +10 | New |
| Transamerica Financial Advisors, Inc. | 5 | $52 | 0.00% | +5 | New |
| Essential Partners LLC | 11 | $116 | 0.00% | 00.0% | Unchanged |
| MAI Capital Management | 13 | $138 | 0.00% | +13 | New |
| Keating Financial Advisory Services, Inc. | 18 | $190 | 0.00% | +18 | New |
| IFP Advisors, Inc | 26 | $275 | 0.00% | 00.0% | Unchanged |
| Stone House Investment Management, LLC | 39 | $412 | 0.00% | +39 | New |
| Twin Peaks Wealth Advisors, LLC | 41 | $433 | 0.00% | +41 | New |
| Rothschild Investment LLC | 45 | $475 | 0.00% | −15−25.0% | Reduced |
| GAMMA Investing LLC | 128 | $1.35K | 0.00% | +21+19.6% | Added |
| EverSource Wealth Advisors, LLC | 130 | $1.37K | 0.00% | +15+13.0% | Added |
| CDKV Holdings LLC | 155 | $1.64K | 0.00% | +155 | New |
| SBI Securities Co., Ltd. | 208 | $2.20K | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 300 | $3.17K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 377 | $3.98K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 497 | $5.25K | 0.00% | +453+1,029.5% | Added |
| Northwestern Mutual Wealth Management Co | 500 | $5.28K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 508 | $5.36K | 0.00% | +357+236.4% | Added |
| UBS Asset Management Americas Inc | 547 | $5.78K | 0.00% | +316+136.8% | Added |
| Massmutual Trust Co FSB | 583 | $6.16K | 0.00% | +223+61.9% | Added |
| Bear Mountain Capital, Inc. | 485 | $6.53K | 0.00% | +485 | New |
| Sterling Capital Management LLC | 669 | $7.07K | 0.00% | −232−25.7% | Reduced |
| Philadelphia Investment Partners, LLC | 729 | $7.70K | 0.01% | +729 | New |
| Parallel Advisors, LLC | 750 | $7.92K | 0.00% | −3,159−80.8% | Reduced |
| Royal Bank of Canada | 800 | $8.00K | 0.00% | −497,599−99.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 793 | $8.37K | 0.00% | +28+3.7% | Added |
| Truvestments Capital LLC | 946 | $9.99K | 0.00% | −736−43.8% | Reduced |
| Rockefeller Capital Management L.P. | 975 | $10.3K | 0.00% | +780+400.0% | Added |
| Plante Moran Financial Advisors, LLC | 1,000 | $10.6K | 0.00% | 00.0% | Unchanged |
| Capital Analysts, LLC | 1,000 | $11.0K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 1,193 | $12.3K | 0.00% | +1,193 | New |
| Pinnacle Wealth Planning Services, Inc. | 1,231 | $13.0K | 0.00% | +1,231 | New |
| GWM Advisors LLC | 1,300 | $13.7K | 0.00% | +300+30.0% | Added |
| CWM, LLC | 1,412 | $14.9K | 0.00% | +180+14.6% | Added |
| Steward Partners Investment Advisory, LLC | 1,500 | $15.8K | 0.00% | +1,500 | New |
| GF Fund Management Co. Ltd. | 1,583 | $16.7K | 0.00% | +191+13.7% | Added |
| Strategic Investment Solutions, Inc. | 1,827 | $19.3K | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 3,191 | $33.7K | 0.01% | −6,085−65.6% | Reduced |
| Nisa Investment Advisors, LLC | 3,425 | $36.2K | 0.00% | +2,621+326.0% | Added |
| Assetmark, Inc | 3,600 | $38.0K | 0.00% | +3,600 | New |
| Quantbot Technologies LP | 3,650 | $38.5K | 0.00% | −3,570−49.4% | Reduced |
| Optiver Holding B.V. | 3,681 | $38.9K | 0.00% | −66−1.8% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 3,698 | $39.1K | 0.00% | +253+7.3% | Added |
| California State Teachers Retirement System | 3,752 | $39.6K | 0.00% | −303−7.5% | Reduced |
| Ameritas Investment Partners, Inc. | 5,027 | $53.1K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 5,103 | $53.9K | 0.00% | +5,103 | New |
| Legal & General Group Plc | 6,068 | $64.1K | 0.00% | −903−13.0% | Reduced |
| Walleye Trading LLC | 6,430 | $67.9K | 0.00% | −63,223−90.8% | Reduced |
| International Assets Investment Management, LLC | 5,800 | $70.1K | 0.00% | +800+16.0% | Added |
| Atlantic Union Bankshares Corp | 7,000 | $73.9K | 0.00% | +7,000 | New |
| Farther Finance Advisors, LLC | 7,106 | $85.8K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 8,351 | $88.2K | 0.00% | +804+10.7% | Added |
| Tower Research Capital LLC (TRC) | 8,411 | $88.8K | 0.00% | +6,495+339.0% | Added |
| Leonteq Securities AG | 10,000 | $105.6K | 0.01% | +10,000 | New |
| Raymond James Financial Inc | 10,276 | $108.5K | 0.00% | −1,966−16.1% | Reduced |
| National Asset Management, Inc. | 11,369 | $111.5K | 0.01% | 00.0% | Unchanged |
| LMR Partners LLP | 10,634 | $112.3K | 0.00% | +10,634 | New |
| Sowell Financial Services LLC | 10,650 | $112.5K | 0.00% | 00.0% | Unchanged |
| Voya Investment Management LLC | 11,523 | $121.7K | 0.00% | +118+1.0% | Added |
| State of Wisconsin Investment Board | 11,799 | $124.6K | 0.00% | +11,799 | New |
| DeepCurrents Investment Group LLC | 12,130 | $128.1K | 0.01% | +12,130 | New |
| Rafferty Asset Management, LLC | 12,298 | $129.9K | 0.00% | +72+0.6% | Added |
| Prudential Financial Inc | 12,905 | $136.3K | 0.00% | +12,905 | New |
| ProShare Advisors LLC | 13,118 | $138.5K | 0.00% | −2,053−13.5% | Reduced |
| SEI Investments Co | 13,171 | $139.1K | 0.00% | −18,595−58.5% | Reduced |
| Canada Pension Plan Investment Board | 13,900 | $146.8K | 0.00% | −7,800−35.9% | Reduced |
| Russell Investments Group, Ltd. | 13,998 | $147.8K | 0.00% | −16−0.1% | Reduced |
| nVerses Capital, LLC | 14,404 | $152.1K | 0.14% | +14,404 | New |
| XTX Topco Ltd | 15,251 | $161.1K | 0.00% | +15,251 | New |
| Police & Firemen's Retirement System of New Jersey | 16,360 | $172.8K | 0.00% | 00.0% | Unchanged |
| Breakwater Investment Management | 17,048 | $180.0K | 0.07% | 00.0% | Unchanged |
| Wealth Enhancement Advisory Services, LLC | 17,475 | $190.5K | 0.00% | −14,253−44.9% | Reduced |
| Apella Capital, LLC | 14,288 | $192.0K | 0.00% | 00.0% | Unchanged |
| Intech Investment Management LLC | 18,276 | $193.0K | 0.00% | −11,691−39.0% | Reduced |
| Manufacturers Life Insurance Company, The | 18,454 | $194.9K | 0.00% | −1,396−7.0% | Reduced |
| FMR LLC | 18,677 | $197.2K | 0.00% | +609+3.4% | Added |
| China Universal Asset Management Co., Ltd. | 18,982 | $200.4K | 0.02% | +2,429+14.7% | Added |
| LPL Financial LLC | 19,608 | $207.1K | 0.00% | +19,608 | New |
| Profund Advisors LLC | 20,647 | $218.0K | 0.01% | +6,317+44.1% | Added |
| New York State Common Retirement Fund | 20,713 | $218.7K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 21,047 | $222.3K | 0.00% | +4,131+24.4% | Added |
| Avantax Planning Partners, Inc. | 21,100 | $222.8K | 0.01% | +7,900+59.8% | Added |
| Harbour Investments, Inc. | 22,025 | $232.6K | 0.00% | +190+0.9% | Added |
| Stordahl Capital Management, Inc. | 22,860 | $241.4K | 0.05% | 00.0% | Unchanged |
| Farallon Capital Management, L.L.C. | 23,000 | $242.9K | 0.00% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 23,967 | $253.0K | 0.02% | +23,967 | New |
| Virtus Investment Advisers, Inc. | 26,865 | $283.7K | 0.08% | +653+2.5% | Added |
| Merit Financial Group, LLC | 26,993 | $285.0K | 0.00% | +26,993 | New |
| Bridgeway Capital Management, LLC | 27,000 | $285.1K | 0.01% | −29,715−52.4% | Reduced |
| Vontobel Holding Ltd. | 28,450 | $300.4K | 0.00% | +23,000+422.0% | Added |
| Balyasny Asset Management LLC | 29,083 | $307.1K | 0.00% | +29,083 | New |
| Diametric Capital, LP | 29,322 | $309.6K | 0.08% | +29,322 | New |
| AQR Capital Management LLC | 30,178 | $318.7K | 0.00% | +7,340+32.1% | Added |
| Citigroup Inc | 30,790 | $325.1K | 0.00% | +3,301+12.0% | Added |
| Cerity Partners LLC | 31,586 | $333.5K | 0.00% | +1,136+3.7% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 31,701 | $334.8K | 0.00% | +1,116+3.6% | Added |
| Brighton Jones LLC | 31,880 | $336.7K | 0.01% | +31,880 | New |
| Acadian Asset Management LLC | 32,778 | $345.0K | 0.00% | +32,778 | New |
| Walleye Capital LLC | 34,533 | $364.7K | 0.00% | −75,423−68.6% | Reduced |
| Simplex Trading, LLC | 37,526 | $396.3K | 0.01% | −86,453−69.7% | Reduced |