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, Q4 2025
Institutional positions in Omeros Corp as of Dec 31, 2025. 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
- 151
- +20 vs. Q3 2025
- Shares held
- 33.2M
- +422.9K (+1.3%) vs. Q3 2025
- Total value
- $570.3M
- +$435.7M (+323.9%) vs. Q3 2025
- New holders
- 33
- 61 more added
- Sold out
- 13
- 35 more reduced
2 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Omeros Corp; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rafferty Asset Management, LLC | 12,226 | $210.0K | 0.00% | +12,226 | New |
| Voya Investment Management LLC | 11,405 | $195.9K | 0.00% | +216+1.9% | Added |
| National Asset Management, Inc. | 11,369 | $195.3K | 0.01% | +609+5.7% | Added |
| Sowell Financial Services LLC | 10,650 | $182.9K | 0.01% | +200+1.9% | Added |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 10,500 | $180.3K | 0.00% | −30,000−74.1% | Reduced |
| Abel Hall, LLC | 10,240 | $175.9K | 0.04% | +10,240 | New |
| Caitong International Asset Management Co., Ltd | 9,276 | $159.3K | 0.04% | +9,276 | New |
| Advisor Group Holdings, Inc. | 7,547 | $129.7K | 0.00% | +1,938+34.6% | Added |
| Quantbot Technologies LP | 7,220 | $124.0K | 0.00% | +7,220 | New |
| Farther Finance Advisors, LLC | 7,106 | $122.0K | 0.00% | +1,004+16.5% | Added |
| Legal & General Group Plc | 6,971 | $119.7K | 0.00% | −114−1.6% | Reduced |
| Vontobel Holding Ltd. | 5,450 | $93.6K | 0.00% | +5,450 | New |
| SRS Capital Advisors, Inc. | 5,255 | $90.3K | 0.00% | +1,894+56.4% | Added |
| Ameritas Investment Partners, Inc. | 5,027 | $86.3K | 0.00% | 00.0% | Unchanged |
| International Assets Investment Management, LLC | 5,000 | $85.9K | 0.01% | −10,550−67.8% | Reduced |
| California State Teachers Retirement System | 4,055 | $69.6K | 0.00% | −10.0% | Reduced |
| Parallel Advisors, LLC | 3,909 | $67.1K | 0.00% | +750+23.7% | Added |
| Optiver Holding B.V. | 3,747 | $64.4K | 0.00% | +3,209+596.5% | Added |
| Mirae Asset Global Investments Co., Ltd. | 3,445 | $59.2K | 0.00% | +814+30.9% | Added |
| Amalgamated Bank | 2,069 | $36.0K | 0.00% | +17+0.8% | Added |
| Tower Research Capital LLC (TRC) | 1,916 | $32.9K | 0.00% | −1,512−44.1% | Reduced |
| Strategic Investment Solutions, Inc. | 1,827 | $31.4K | 0.01% | +2+0.1% | Added |
| Truvestments Capital LLC | 1,682 | $28.9K | 0.01% | 00.0% | Unchanged |
| State of Wyoming | 1,433 | $24.6K | 0.00% | +1,433 | New |
| GF Fund Management Co. Ltd. | 1,392 | $23.9K | 0.00% | −72−4.9% | Reduced |
| CWM, LLC | 1,232 | $21.0K | 0.00% | −28−2.2% | Reduced |
| Fifth Third Bancorp | 1,000 | $17.2K | 0.00% | 00.0% | Unchanged |
| Plante Moran Financial Advisors, LLC | 1,000 | $17.2K | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 1,000 | $17.2K | 0.00% | +1,000 | New |
| Capital Analysts, LLC | 1,000 | $17.0K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 901 | $15.5K | 0.00% | +256+39.7% | Added |
| Nisa Investment Advisors, LLC | 804 | $13.8K | 0.00% | −870−52.0% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 765 | $13.1K | 0.00% | −235−23.5% | Reduced |
| Northwestern Mutual Wealth Management Co | 500 | $8.59K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 377 | $6.47K | 0.00% | −297−44.1% | Reduced |
| Massmutual Trust Co FSB | 360 | $6.18K | 0.00% | +236+190.3% | Added |
| Pandora Wealth, Inc. | 330 | $5.67K | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 300 | $5.15K | 0.00% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 231 | $3.97K | 0.00% | +231 | New |
| SBI Securities Co., Ltd. | 208 | $3.57K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 195 | $3.35K | 0.00% | +195 | New |
| Daiwa Securities Group Inc. | 191 | $3.00K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 151 | $2.59K | 0.00% | +1+0.7% | Added |
| EverSource Wealth Advisors, LLC | 115 | $1.98K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 107 | $1.84K | 0.00% | +107 | New |
| Rothschild Investment LLC | 60 | $1.03K | 0.00% | +60 | New |
| Rocky Mountain Advisers, LLC | 50 | $859 | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 44 | $756 | 0.00% | −13−22.8% | Reduced |
| Parkside Financial Bank & Trust | 40 | $687 | 0.00% | +40 | New |
| IFP Advisors, Inc | 26 | $447 | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 11 | $189 | 0.00% | 00.0% | Unchanged |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −464,178−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −344,500−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −155,496−100.0% | Sold out |
| DeepCurrents Investment Group LLC | 0 | $0 | 0.00% | −120,918−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −53,266−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −49,197−100.0% | Sold out |
| State of Wisconsin Investment Board | 0 | $0 | 0.00% | −33,678−100.0% | Sold out |
| Brighton Jones LLC | 0 | $0 | 0.00% | −31,539−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −21,533−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −10,004−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −1,369−100.0% | Sold out |
| US Bancorp | 0 | $0 | 0.00% | −50−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −26−100.0% | Sold out |
| Wolverine Trading, LLC | – | – | – | – | Not filed |
| SPC Financial, Inc. | – | – | – | – | Not filed |