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 |
|---|---|---|---|---|---|
| Rafferty Asset Management, LLC | 12,298 | $129.9K | 0.00% | +72+0.6% | Added |
| DeepCurrents Investment Group LLC | 12,130 | $128.1K | 0.01% | +12,130 | New |
| State of Wisconsin Investment Board | 11,799 | $124.6K | 0.00% | +11,799 | New |
| Voya Investment Management LLC | 11,523 | $121.7K | 0.00% | +118+1.0% | Added |
| Sowell Financial Services LLC | 10,650 | $112.5K | 0.00% | 00.0% | Unchanged |
| LMR Partners LLP | 10,634 | $112.3K | 0.00% | +10,634 | New |
| National Asset Management, Inc. | 11,369 | $111.5K | 0.01% | 00.0% | Unchanged |
| Raymond James Financial Inc | 10,276 | $108.5K | 0.00% | −1,966−16.1% | Reduced |
| Leonteq Securities AG | 10,000 | $105.6K | 0.01% | +10,000 | New |
| Tower Research Capital LLC (TRC) | 8,411 | $88.8K | 0.00% | +6,495+339.0% | Added |
| Advisor Group Holdings, Inc. | 8,351 | $88.2K | 0.00% | +804+10.7% | Added |
| Farther Finance Advisors, LLC | 7,106 | $85.8K | 0.00% | 00.0% | Unchanged |
| Atlantic Union Bankshares Corp | 7,000 | $73.9K | 0.00% | +7,000 | New |
| International Assets Investment Management, LLC | 5,800 | $70.1K | 0.00% | +800+16.0% | Added |
| Walleye Trading LLC | 6,430 | $67.9K | 0.00% | −63,223−90.8% | Reduced |
| Legal & General Group Plc | 6,068 | $64.1K | 0.00% | −903−13.0% | Reduced |
| US Bancorp | 5,103 | $53.9K | 0.00% | +5,103 | New |
| Ameritas Investment Partners, Inc. | 5,027 | $53.1K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 3,752 | $39.6K | 0.00% | −303−7.5% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 3,698 | $39.1K | 0.00% | +253+7.3% | Added |
| Optiver Holding B.V. | 3,681 | $38.9K | 0.00% | −66−1.8% | Reduced |
| Quantbot Technologies LP | 3,650 | $38.5K | 0.00% | −3,570−49.4% | Reduced |
| Assetmark, Inc | 3,600 | $38.0K | 0.00% | +3,600 | New |
| Nisa Investment Advisors, LLC | 3,425 | $36.2K | 0.00% | +2,621+326.0% | Added |
| Caitong International Asset Management Co., Ltd | 3,191 | $33.7K | 0.01% | −6,085−65.6% | Reduced |
| Strategic Investment Solutions, Inc. | 1,827 | $19.3K | 0.00% | 00.0% | Unchanged |
| GF Fund Management Co. Ltd. | 1,583 | $16.7K | 0.00% | +191+13.7% | Added |
| Steward Partners Investment Advisory, LLC | 1,500 | $15.8K | 0.00% | +1,500 | New |
| CWM, LLC | 1,412 | $14.9K | 0.00% | +180+14.6% | Added |
| GWM Advisors LLC | 1,300 | $13.7K | 0.00% | +300+30.0% | Added |
| Pinnacle Wealth Planning Services, Inc. | 1,231 | $13.0K | 0.00% | +1,231 | New |
| Jones Financial Companies LLLP | 1,193 | $12.3K | 0.00% | +1,193 | New |
| Capital Analysts, LLC | 1,000 | $11.0K | 0.00% | 00.0% | Unchanged |
| Plante Moran Financial Advisors, LLC | 1,000 | $10.6K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 975 | $10.3K | 0.00% | +780+400.0% | Added |
| Truvestments Capital LLC | 946 | $9.99K | 0.00% | −736−43.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 793 | $8.37K | 0.00% | +28+3.7% | Added |
| Royal Bank of Canada | 800 | $8.00K | 0.00% | −497,599−99.8% | Reduced |
| Parallel Advisors, LLC | 750 | $7.92K | 0.00% | −3,159−80.8% | Reduced |
| Philadelphia Investment Partners, LLC | 729 | $7.70K | 0.01% | +729 | New |
| Sterling Capital Management LLC | 669 | $7.07K | 0.00% | −232−25.7% | Reduced |
| Bear Mountain Capital, Inc. | 485 | $6.53K | 0.00% | +485 | New |
| Massmutual Trust Co FSB | 583 | $6.16K | 0.00% | +223+61.9% | Added |
| UBS Asset Management Americas Inc | 547 | $5.78K | 0.00% | +316+136.8% | Added |
| Larson Financial Group LLC | 508 | $5.36K | 0.00% | +357+236.4% | Added |
| Northwestern Mutual Wealth Management Co | 500 | $5.28K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 497 | $5.25K | 0.00% | +453+1,029.5% | Added |
| The PNC Financial Services Group, Inc. | 377 | $3.98K | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 300 | $3.17K | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 208 | $2.20K | 0.00% | 00.0% | Unchanged |
| CDKV Holdings LLC | 155 | $1.64K | 0.00% | +155 | New |
| EverSource Wealth Advisors, LLC | 130 | $1.37K | 0.00% | +15+13.0% | Added |
| GAMMA Investing LLC | 128 | $1.35K | 0.00% | +21+19.6% | Added |
| Rothschild Investment LLC | 45 | $475 | 0.00% | −15−25.0% | Reduced |
| Twin Peaks Wealth Advisors, LLC | 41 | $433 | 0.00% | +41 | New |
| Stone House Investment Management, LLC | 39 | $412 | 0.00% | +39 | New |
| IFP Advisors, Inc | 26 | $275 | 0.00% | 00.0% | Unchanged |
| Keating Financial Advisory Services, Inc. | 18 | $190 | 0.00% | +18 | New |
| MAI Capital Management | 13 | $138 | 0.00% | +13 | New |
| Essential Partners LLC | 11 | $116 | 0.00% | 00.0% | Unchanged |
| Transamerica Financial Advisors, Inc. | 5 | $52 | 0.00% | +5 | New |
| Covestor Ltd | 10 | $0 | 0.00% | +10 | New |
| 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 |