OMER
Omeros Corp
$10.37
-0.13 (-1.24%)
At close · Jul 15
Market Cap
$670.56M
Shares
72,375,355
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
The Jun 30, 2026 filing window is
still open — showing the latest known positions. Funds that have not filed yet
carry their prior-quarter positions; a fund that filed without this stock counts
as sold out.
Holders: 160
Total Value: $335,951,980
Total Shares: 31,819,899
Showing 1–100
of 170 holdings by value
· page 1 of 2
Institutional Ownership Trend
26 quarters
Holder Concentration
Across 160 13F filersTop Holder
16.7%
of institutional value
Top 5
50.6%
of institutional value
Top 10
71.1%
of institutional value
HHI
700
Broadly held
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. | $56,069,646 | 16.69% | 5,309,626 | Shares | Sole | 2026-05-13 | ||||
| Mid INGALLS & SNYDER LLC | $37,587,506 | 11.19% | 3,559,423 | Shares | Other | 2026-05-13 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $31,503,215 | 9.38% | 2,983,259 | Shares | Defined | 2026-05-15 | ||||
| Mega UBS Group AG | $24,718,118 | 7.36% | 2,340,731 | Shares | Defined | 2026-05-05 | ||||
| Mega STATE STREET CORP | $20,270,712 | 6.03% | 1,919,575 | Shares | Defined | 2026-05-15 | ||||
| Large STIFEL FINANCIAL CORP | $19,341,536 | 5.76% | 1,831,585 | Shares | Defined | 2026-05-12 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $18,504,530 | 5.51% | 1,752,323 | Shares | Defined | 2026-05-15 | ||||
| Large Corient Private Wealth LLC | $8,462,900 | 2.52% | 801,411 | Shares | Sole | 2026-05-15 | ||||
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $6,151,326 | 1.83% | 582,512 | Shares | Sole | 2026-05-15 | ||||
| Mega BANK OF MONTREAL /CAN/ Bank | $6,002,578 | 1.79% | 568,426 | Shares | Defined | 2026-05-13 | ||||
| Mega NORTHERN TRUST CORP Bank | $5,954,434 | 1.77% | 563,867 | Shares | Defined | 2026-05-14 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $5,439,456 | 1.62% | 515,100 | Call | Other | 2026-05-15 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $5,199,163 | 1.55% | 492,345 | Shares | Defined | 2026-05-08 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $5,121,916 | 1.52% | 485,030 | Shares | Other | 2026-05-15 | ||||
| Mega MILLENNIUM MANAGEMENT LLC | $4,336,031 | 1.29% | 410,609 | Shares | Sole | 2026-05-15 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $4,266,240 | 1.27% | 404,000 | Put | Other | 2026-05-15 | ||||
| Mega MORGAN STANLEY | $3,356,936 | 1.00% | 317,892 | Shares | Defined | 2026-05-15 | ||||
| Small Clutterbuck Capital Management LLC | $3,168,000 | 0.94% | 300,000 | Shares | Other | 2026-05-14 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $3,025,165 | 0.90% | 286,474 | Shares | Sole | 2026-05-15 | ||||
| Mid Badgley Phelps Wealth Managers, LLC | $2,783,151 | 0.83% | 263,556 | Shares | Sole | 2026-04-15 | ||||
| Mega CITADEL ADVISORS LLC | $2,746,106 | 0.82% | 260,048 | Shares | Defined | 2026-05-15 | ||||
| Mega CITADEL ADVISORS LLC | $2,474,208 | 0.74% | 234,300 | Put | Defined | 2026-05-15 | ||||
| Mega CITADEL ADVISORS LLC | $2,321,088 | 0.69% | 219,800 | Call | Defined | 2026-05-15 | ||||
| Mega BANK OF AMERICA CORP /DE/ Bank | $2,162,740 | 0.64% | 204,805 | Shares | Defined | 2026-05-18 | ||||
| Mega GOLDMAN SACHS GROUP INC | $2,142,550 | 0.64% | 202,893 | Shares | Defined | 2026-05-15 | ||||
| Mid Polar Asset Management Partners Inc. | $2,112,000 | 0.63% | 200,000 | Shares | Sole | 2026-05-15 | ||||
| Mid Jump Financial, LLC | $2,067,901 | 0.62% | 195,824 | Shares | Defined | 2026-05-14 | ||||
| Mega WELLINGTON MANAGEMENT GROUP LLP | $1,977,887 | 0.59% | 187,300 | Shares | Defined | 2026-05-15 | ||||
| Mega Invesco Ltd. | $1,907,440 | 0.57% | 180,629 | Shares | Defined | 2026-05-12 | ||||
| Mega DIMENSIONAL FUND ADVISORS LP | $1,896,511 | 0.56% | 179,594 | Shares | Sole | 2026-05-07 | ||||
| Small Prosight Management, LP | $1,845,888 | 0.55% | 174,800 | Shares | Sole | 2026-05-15 | ||||
| Mega Bank of New York Mellon Corp Bank | $1,755,556 | 0.52% | 166,246 | Shares | Defined | 2026-05-05 | ||||
| Mega Nuveen, LLC | $1,628,362 | 0.48% | 154,201 | Shares | Defined | 2026-04-30 | ||||
| Mega JANE STREET GROUP, LLC | $1,534,441 | 0.46% | 145,307 | Shares | Defined | 2026-05-12 | ||||
| Mega JANE STREET GROUP, LLC | $1,293,600 | 0.39% | 122,500 | Call | Defined | 2026-05-12 | ||||
| Mega WELLS FARGO & COMPANY/MN | $1,249,701 | 0.37% | 118,343 | Shares | Defined | 2026-05-11 | ||||
| Mega AMERIPRISE FINANCIAL INC | $1,245,530 | 0.37% | 117,948 | Shares | Defined | 2026-05-15 | ||||
| Mid Ancora Advisors LLC | $1,214,400 | 0.36% | 115,000 | Shares | Other | 2026-05-15 | ||||
| Large HighTower Advisors, LLC | $1,168,252 | 0.35% | 110,630 | Shares | Sole | 2026-05-05 | ||||
| Mega PRICE T ROWE ASSOCIATES INC /MD/ | $1,133,014 | 0.34% | 107,293 | Shares | Defined | 2026-05-15 | ||||
| Mega RHUMBLINE ADVISERS | $1,085,758 | 0.32% | 102,818 | Shares | Sole | 2026-05-12 | ||||
| Mid Susquehanna Portfolio Strategies, LLC | $979,535 | 0.29% | 92,759 | Shares | Sole | 2026-05-15 | ||||
| Large Cambridge Investment Research Advisors, Inc. | $935,278 | 0.28% | 88,568 | Shares | Sole | 2026-04-30 | ||||
| Mega JANE STREET GROUP, LLC | $887,040 | 0.26% | 84,000 | Put | Defined | 2026-05-12 | ||||
| Large MARSHALL WACE, LLP | $883,681 | 0.26% | 83,682 | Shares | Other | 2026-05-15 | ||||
| Large Walleye Capital LLC | $863,808 | 0.26% | 81,800 | Put | Sole | 2026-05-13 | ||||
| Mega D. E. Shaw & Co., Inc. | $751,533 | 0.22% | 71,168 | Shares | Defined | 2026-05-15 | ||||
| Mega ALLIANCEBERNSTEIN L.P. | $707,414 | 0.21% | 66,990 | Shares | Defined | 2026-05-15 | ||||
| Small AMERICAN FINANCIAL GROUP INC | $677,033 | 0.20% | 64,113 | Shares | Defined | 2026-05-13 | ||||
| Large Quantinno Capital Management LP | $649,872 | 0.19% | 61,541 | Shares | Sole | 2026-05-15 | ||||
| Small MINDSET WEALTH MANAGEMENT, LLC | $628,320 | 0.19% | 59,500 | Shares | Sole | 2026-04-22 | ||||
| Large MML INVESTORS SERVICES, LLC | $609,048 | 0.18% | 57,675 | Shares | Defined | 2026-05-04 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $600,948 | 0.18% | 56,908 | Shares | Defined | 2026-05-12 | ||||
| Mega DEUTSCHE BANK AG\ Bank | $581,116 | 0.17% | 55,030 | Shares | Defined | 2026-05-06 | ||||
| Mid COLDSTREAM CAPITAL MANAGEMENT INC | $571,612 | 0.17% | 54,130 | Shares | Sole | 2026-05-08 | ||||
| Mid Brevan Howard Capital Management LP | $540,281 | 0.16% | 51,163 | Shares | Defined | 2026-05-15 | ||||
| Small Headlands Technologies LLC | $527,218 | 0.16% | 49,926 | Shares | Sole | 2026-05-13 | ||||
| Small NFSG Corp | $503,817 | 0.15% | 47,710 | Shares | Sole | 2026-05-05 | ||||
| Large Focus Partners Wealth | $502,465 | 0.15% | 47,582 | Shares | Sole | 2026-05-15 | ||||
| Mega BARCLAYS PLC | $474,375 | 0.14% | 44,922 | Shares | Defined | 2026-05-15 | ||||
| Mega JPMORGAN CHASE & CO | $440,561 | 0.13% | 41,720 | Shares | Defined | 2026-05-13 | ||||
| Mega Vanguard Global Advisers, LLC | $434,237 | 0.13% | 41,121 | Shares | Defined | 2026-05-08 | ||||
| Large FIFTH THIRD BANCORP Bank | $411,840 | 0.12% | 39,000 | Shares | Defined | 2026-05-01 | ||||
| Small AXQ CAPITAL, LP | $409,886 | 0.12% | 38,815 | Shares | Sole | 2026-05-13 | ||||
| Large MetLife Investment Management, LLC | $407,975 | 0.12% | 38,634 | Shares | Defined | 2026-05-14 | ||||
| Mid GROUP ONE TRADING LLC | $407,658 | 0.12% | 38,604 | Shares | Sole | 2026-05-13 | ||||
| Small Optimize Financial Inc | $405,577 | 0.12% | 38,407 | Shares | Sole | 2026-05-12 | ||||
| Large NOMURA HOLDINGS INC | $403,782 | 0.12% | 38,237 | Shares | Defined | 2026-05-15 | ||||
| Mid SIMPLEX TRADING, LLC | $396,274 | 0.12% | 37,526 | Shares | Sole | 2026-05-14 | ||||
| Large Walleye Capital LLC | $364,668 | 0.11% | 34,533 | Shares | Sole | 2026-05-13 | ||||
| Large ACADIAN ASSET MANAGEMENT LLC | $346,135 | 0.10% | 32,778 | Shares | Defined | 2026-05-13 | ||||
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund | $334,762 | 0.10% | 31,701 | Shares | Defined | 2026-05-15 | ||||
| Large Cerity Partners LLC | $333,548 | 0.10% | 31,586 | Shares | Sole | 2026-05-15 | ||||
| Mega CITIGROUP INC | $325,141 | 0.10% | 30,790 | Shares | Defined | 2026-05-11 | ||||
| Mega AQR CAPITAL MANAGEMENT LLC | $318,678 | 0.09% | 30,178 | Shares | Defined | 2026-05-15 | ||||
| Small Diametric Capital, LP | $309,640 | 0.09% | 29,322 | Shares | Defined | 2026-05-15 | ||||
| Large Balyasny Asset Management L.P. | $307,116 | 0.09% | 29,083 | Shares | Sole | 2026-05-15 | ||||
| Large Vontobel Holding Ltd. | $300,432 | 0.09% | 28,450 | Shares | Defined | 2026-05-08 | ||||
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC | $285,120 | 0.08% | 27,000 | Shares | Sole | 2026-05-15 | ||||
| Mid Merit Financial Group, LLC | $285,045 | 0.08% | 26,993 | Shares | Other | 2026-04-15 | ||||
| Small Virtus Investment Advisers, LLC | $283,694 | 0.08% | 26,865 | Shares | Other | 2026-05-14 | ||||
| Large Walleye Capital LLC | $260,832 | 0.08% | 24,700 | Call | Sole | 2026-05-13 | ||||
| Mid GSA CAPITAL PARTNERS LLP | $253,091 | 0.08% | 23,967 | Shares | Sole | 2026-05-08 | ||||
| Large FARALLON CAPITAL MANAGEMENT LLC | $242,880 | 0.07% | 23,000 | Shares | Other | 2026-05-15 | ||||
| Large Walleye Trading LLC | $233,376 | 0.07% | 22,100 | Put | Sole | 2026-05-11 | ||||
| Mid HARBOUR INVESTMENTS, INC. | $232,584 | 0.07% | 22,025 | Shares | Sole | 2026-05-15 | ||||
| Large Walleye Trading LLC | $228,096 | 0.07% | 21,600 | Call | Sole | 2026-05-11 | ||||
| Small Avantax Planning Partners, Inc. | $222,816 | 0.07% | 21,100 | Shares | Sole | 2026-05-04 | ||||
| Large Creative Planning | $222,256 | 0.07% | 21,047 | Shares | Sole | 2026-05-12 | ||||
| Large NEW YORK STATE COMMON RETIREMENT FUND Pension | $218,729 | 0.07% | 20,713 | Shares | Sole | 2026-05-06 | ||||
| Mid PROFUND ADVISORS LLC | $218,032 | 0.06% | 20,647 | Shares | Sole | 2026-04-27 | ||||
| Micro Stordahl Capital Management, Inc. | $217,398 | 0.06% | 22,860 | Shares | Sole | 2026-07-14 | ||||
| Mega LPL Financial LLC | $207,060 | 0.06% | 19,608 | Shares | Sole | 2026-05-06 | ||||
| Mid China Universal Asset Management Co., Ltd. | $200,449 | 0.06% | 18,982 | Shares | Sole | 2026-04-28 | ||||
| Mega FMR LLC | $197,228 | 0.06% | 18,677 | Shares | Defined | 2026-05-15 | ||||
| Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance | $194,874 | 0.06% | 18,454 | Shares | Defined | 2026-05-15 | ||||
| Mid INTECH INVESTMENT MANAGEMENT LLC | $192,994 | 0.06% | 18,276 | Shares | Sole | 2026-05-08 | ||||
| Micro Breakwater Investment Management | $180,026 | 0.05% | 17,048 | Shares | Sole | 2026-05-15 | ||||
| Large Police & Firemen's Retirement System of New Jersey Pension | $172,761 | 0.05% | 16,360 | Shares | Defined | 2026-04-29 | ||||
| Mid XTX Topco Ltd | $161,050 | 0.05% | 15,251 | Shares | Defined | 2026-05-15 | ||||
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