OMEROS CORP (OMER) — Institutional Holders, Q2 2026
177 institutional investment managers reported a OMER position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $433.4M. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
OMER in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- UBS Group AGAdded · +807,653 sh+$7.7M
- BlackRockAdded · +735,007 sh+$7.0M
- Rock Springs Capital ManagementNew · +718,499 sh+$6.8M
- Rubric Capital ManagementNew · +656,874 sh+$6.2M
- Invesco Ltd.Added · +571,142 sh+$5.4M
Biggest sellers
- Polar Asset Management PartnersSold out · -200,000 sh-$1.9M
- Jump FinancialSold out · -195,824 sh-$1.9M
- Itau Unibanco Holding S.A.Sold out · -180,000 sh-$1.7M
- DIMENSIONAL FUND ADVISORSSold out · -179,594 sh-$1.7M
- Prosight ManagementSold out · -174,800 sh-$1.7M
OMER 13F holders ranked 1–100 of 177
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | BlackRock#1 · 6,044,633 sh | 6,044,633 | $57.5M | <0.01% | +13.8% |
| 2 | INGALLS & SNYDER#2 · 3,659,523 sh | 3,659,523 | $34.8M | 0.95% | +2.8% |
| 3 | D. E. Shaw#3 · 18,380,000 sh | 18,380,000 | $34.7M | 0.02% | +36.6% |
| 4 | UBS Group AG#4 · 3,148,384 sh | 3,148,384 | $29.9M | <0.01% | +34.5% |
| 5 | VANGUARD CAPITAL MANAGEMENT#5 · 3,072,050 sh | 3,072,050 | $29.2M | <0.01% | +3.0% |
| 6 | STATE STREET#6 · 2,319,906 sh | 2,319,906 | $22.1M | <0.01% | +20.9% |
| 7 | DeepCurrents Investment Group#7 · 9,883,971 sh | 9,883,971 | $18.6M | 0.56% | -37.7% |
| 8 | GEODE CAPITAL MANAGEMENT#8 · 1,914,460 sh | 1,914,460 | $18.2M | <0.01% | +9.3% |
| 9 | WHITEBOX ADVISORS#9 · 9,533,000 sh | 9,533,000 | $17.7M | 0.23% | -47.1% |
| 10 | STIFEL FINANCIAL#10 · 1,836,925 sh | 1,836,925 | $17.5M | 0.01% | +0.3% |
| 11 | Affinity Asset Advisors#11 · 6,525,000 sh | 6,525,000 | $12.2M | 0.55% | 0.0% |
| 12 | Clutterbuck Capital Management#12 · 4,619,000 sh | 4,619,000 | $12.0M | 6.81% | +3.4% |
| 13 | VANGUARD PORTFOLIO MANAGEMENT#13 · 962,828 sh | 962,828 | $9.2M | <0.01% | +34.0% |
| 14 | Invesco Ltd.#14 · 751,771 sh | 751,771 | $7.1M | <0.01% | +316.2% |
| 15 | NORTHERN#15 · 727,348 sh | 727,348 | $6.9M | <0.01% | +29.0% |
| 16 | Rock Springs Capital Management#16 · 718,499 sh | 718,499 | $6.8M | 0.33% | New |
| 17 | Corient Private Wealth#17 · 659,730 sh | 659,730 | $6.3M | <0.01% | -17.7% |
| 18 | Rubric Capital Management#18 · 656,874 sh | 656,874 | $6.2M | 0.06% | New |
| 19 | CHARLES SCHWAB INVESTMENT MANAGEMENT#19 · 604,633 sh | 604,633 | $5.8M | <0.01% | +3.8% |
| 20 | BANK OF MONTREAL#20 · 568,424 sh | 568,424 | $5.4M | <0.01% | 0.0% |
| 21 | VANGUARD FIDUCIARY#21 · 491,173 sh | 491,173 | $4.7M | <0.01% | -0.2% |
| 22 | FEDERATED HERMES#22 · 478,290 sh | 478,290 | $4.5M | <0.01% | New |
| 23 | TWO SIGMA INVESTMENTS#23 · 402,662 sh | 402,662 | $3.8M | <0.01% | +40.6% |
| 24 | MORGAN STANLEY#24 · 394,459 sh | 394,459 | $3.8M | <0.01% | +24.1% |
| 25 | MILLENNIUM MANAGEMENT#25 · 343,839 sh | 343,839 | $3.3M | <0.01% | -16.3% |
| 26 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#26 · 325,194 sh | 325,194 | $3.1M | <0.01% | -33.0% |
| 27 | Badgley Phelps Wealth Managers#27 · 263,556 sh | 263,556 | $2.5M | — | 0.0% |
| 28 | WELLINGTON MANAGEMENT GROUP LLP#28 · 204,541 sh | 204,541 | $1.9M | <0.01% | +9.2% |
| 29 | Bank of New York Mellon#29 · 195,990 sh | 195,990 | $1.9M | <0.01% | +17.9% |
| 30 | BANK OF AMERICA#30 · 194,140 sh | 194,140 | $1.8M | <0.01% | -5.2% |
| 31 | Nuveen#31 · 169,952 sh | 169,952 | $1.6M | <0.01% | +10.2% |
| 32 | Ancora Advisors#32 · 168,750 sh | 168,750 | $1.6M | 0.03% | +46.7% |
| 33 | GOLDMAN SACHS GROUP#33 · 157,008 sh | 157,008 | $1.5M | <0.01% | -22.6% |
| 34 | WELLS FARGO & COMPANY#34 · 156,889 sh | 156,889 | $1.5M | <0.01% | +32.6% |
| 35 | Swiss National Bank#35 · 137,300 sh | 137,300 | $1.3M | <0.01% | New |
| 36 | Virtus Investment Advisers#36 · 133,129 sh | 133,129 | $1.3M | 0.29% | +395.5% |
| 37 | Caption Management#37 · 130,000 sh | 130,000 | $1.2M | <0.01% | New |
| 38 | PRICE T ROWE ASSOCIATES#38 · 129,550 sh | 129,550 | $1.2M | <0.01% | +20.7% |
| 39 | MML INVESTORS SERVICES#39 · 118,175 sh | 118,175 | $1.1M | <0.01% | +104.9% |
| 40 | AMERIPRISE FINANCIAL#40 · 117,456 sh | 117,456 | $1.1M | <0.01% | -0.4% |
| 41 | HighTower Advisors#41 · 115,368 sh | 115,368 | $1.1M | <0.01% | +4.3% |
| 42 | RHUMBLINE ADVISERS#42 · 110,271 sh | 110,271 | $1.0M | <0.01% | +7.2% |
| 43 | Brevan Howard Capital Management#43 · 98,047 sh | 98,047 | $932.4K | <0.01% | +91.6% |
| 44 | Cambridge Investment Research Advisors#44 · 92,403 sh | 92,403 | $879.0K | <0.01% | +4.3% |
| 45 | CITADEL ADVISORS#45 · 85,594 sh | 85,594 | $814.0K | <0.01% | -67.1% |
| 46 | COLDSTREAM CAPITAL MANAGEMENT#46 · 84,743 sh | 84,743 | $805.9K | 0.01% | +56.6% |
| 47 | Quantinno Capital Management#47 · 83,786 sh | 83,786 | $796.8K | <0.01% | +36.1% |
| 48 | BALYASNY ASSET MANAGEMENT L.P.#48 · 83,558 sh | 83,558 | $794.6K | <0.01% | +187.3% |
| 49 | Optimize Financial#49 · 76,548 sh | 76,548 | $728.0K | 0.13% | +99.3% |
| 50 | JUPITER ASSET MANAGEMENT LTD#50 · 76,186 sh | 76,186 | $724.5K | <0.01% | New |
| 51 | DEUTSCHE BANK AG\#51 · 75,053 sh | 75,053 | $713.8K | <0.01% | +36.4% |
| 52 | ALLIANCEBERNSTEIN L.P.#52 · 66,990 sh | 66,990 | $707.4K | <0.01% | 0.0% |
| 53 | CITIGROUP#53 · 72,829 sh | 72,829 | $692.6K | <0.01% | +136.5% |
| 54 | MINDSET WEALTH MANAGEMENT#54 · 70,600 sh | 70,600 | $671.4K | — | +18.7% |
| 55 | AMERICAN FINANCIAL GROUP#55 · 64,113 sh | 64,113 | $609.7K | 0.21% | 0.0% |
| 56 | STATE OF WISCONSIN INVESTMENT BOARD#56 · 60,339 sh | 60,339 | $573.8K | <0.01% | +411.4% |
| 57 | GROUP ONE TRADING, L.P.#57 · 58,697 sh | 58,697 | $558.2K | <0.01% | +52.0% |
| 58 | Vanguard Global Advisers#58 · 56,019 sh | 56,019 | $532.7K | <0.01% | +36.2% |
| 59 | Squarepoint Ops#59 · 55,030 sh | 55,030 | $523.3K | <0.01% | New |
| 60 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#60 · 53,362 sh | 53,362 | $507.5K | <0.01% | +9655.4% |
| 61 | VANGUARD ASSET MANAGEMENT, Ltd#61 · 47,769 sh | 47,769 | $454.3K | <0.01% | New |
| 62 | BARCLAYS PLC#62 · 47,157 sh | 47,157 | $448.5K | <0.01% | +5.0% |
| 63 | Newbridge Financial Services Group#63 · 46,210 sh | 46,210 | $439.5K | — | -3.1% |
| 64 | Headlands Technologies#64 · 45,401 sh | 45,401 | $431.8K | 0.05% | -9.1% |
| 65 | Legal & General Group Plc#65 · 44,686 sh | 44,686 | $425.0K | <0.01% | +636.4% |
| 66 | JPMORGAN CHASE#66 · 42,247 sh | 42,247 | $418.7K | 0.00% | +1.3% |
| 67 | MetLife Investment Management#67 · 43,510 sh | 43,510 | $413.8K | <0.01% | +12.6% |
| 68 | Zurcher Kantonalbank (Zurich Cantonalbank)#68 · 42,841 sh | 42,841 | $407.4K | <0.01% | +5302.4% |
| 69 | PRUDENTIAL FINANCIAL#69 · 42,385 sh | 42,385 | $403.1K | <0.01% | +228.4% |
| 70 | Susquehanna Portfolio Strategies#70 · 41,755 sh | 41,755 | $397.1K | <0.01% | -55.0% |
| 71 | INTERNATIONAL ASSETS INVESTMENT MANAGEMENT#71 · 40,400 sh | 40,400 | $380.2K | 0.02% | +596.6% |
| 72 | FIFTH THIRD BANCORP#72 · 39,000 sh | 39,000 | $370.9K | <0.01% | 0.0% |
| 73 | Sound Capital Solutions#73 · 38,274 sh | 38,274 | $364.0K | 0.09% | — |
| 74 | Cerity Partners#74 · 37,188 sh | 37,188 | $353.7K | <0.01% | +17.7% |
| 75 | MIRAE ASSET GLOBAL ETFS Ltd.#75 · 33,217 sh | 33,217 | $315.9K | <0.01% | +4.8% |
| 76 | LPL Financial#76 · 33,033 sh | 33,033 | $314.1K | <0.01% | +68.5% |
| 77 | Diametric Capital#77 · 33,010 sh | 33,010 | $313.9K | 0.03% | +12.6% |
| 78 | COMPASS FINANCIAL MANAGEMENT#78 · 32,815 sh | 32,815 | $312.1K | 0.04% | — |
| 79 | Focus Partners Wealth#79 · 31,723 sh | 31,723 | $301.7K | <0.01% | -33.3% |
| 80 | BRIGHTON JONES#80 · 31,597 sh | 31,597 | $300.5K | <0.01% | -0.9% |
| 81 | Avantax Planning Partners#81 · 31,100 sh | 31,100 | $295.8K | <0.01% | +47.4% |
| 82 | Jupiter Topco#82 · 30,500 sh | 30,500 | $290.2K | <0.01% | — |
| 83 | Russell Investments Group, Ltd.#83 · 30,282 sh | 30,282 | $288.0K | <0.01% | +116.3% |
| 84 | AQR CAPITAL MANAGEMENT#84 · 29,726 sh | 29,726 | $282.7K | <0.01% | -1.5% |
| 85 | BRIDGEWAY CAPITAL MANAGEMENT#85 · 27,000 sh | 27,000 | $256.8K | <0.01% | 0.0% |
| 86 | Merit Financial Group#86 · 26,840 sh | 26,840 | $255.2K | <0.01% | -0.6% |
| 87 | PROFUND ADVISORS#87 · 26,319 sh | 26,319 | $250.3K | <0.01% | +27.5% |
| 88 | Atom Investors#88 · 23,945 sh | 23,945 | $227.7K | 0.02% | New |
| 89 | Creative Planning#89 · 23,282 sh | 23,282 | $221.4K | <0.01% | +10.6% |
| 90 | AXQ CAPITAL#90 · 23,246 sh | 23,246 | $221.1K | 0.02% | -40.1% |
| 91 | HARBOUR INVESTMENTS#91 · 23,139 sh | 23,139 | $220.1K | <0.01% | +5.1% |
| 92 | Stordahl Capital Management#92 · 22,860 sh | 22,860 | $217.4K | — | 0.0% |
| 93 | State of New Jersey Common Pension Fund D#93 · 22,115 sh | 22,115 | $210.3K | <0.01% | New |
| 94 | INTECH INVESTMENT MANAGEMENT#94 · 21,869 sh | 21,869 | $208.0K | <0.01% | +19.7% |
| 95 | NEW YORK STATE COMMON RETIREMENT FUND#95 · 20,713 sh | 20,713 | $197.0K | <0.01% | 0.0% |
| 96 | JANE STREET GROUP#96 · 20,166 sh | 20,166 | $191.8K | 0.00% | -86.1% |
| 97 | Rafferty Asset Management#97 · 19,474 sh | 19,474 | $185.2K | <0.01% | +58.4% |
| 98 | Police & Firemen's Retirement System of New Jersey#98 · 19,265 sh | 19,265 | $183.2K | <0.01% | +17.8% |
| 99 | MANUFACTURERS LIFE INSURANCE COMPANY, THE#99 · 18,965 sh | 18,965 | $180.4K | <0.01% | +2.8% |
| 100 | Arizona State Retirement System#100 · 18,873 sh | 18,873 | $179.5K | <0.01% | New |
Funds that sold out of OMER in Q2 2026 (26)
Held OMER at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| Itau Unibanco Holding S.A.180,000 sh | 180,000 | $3.1M |
| Polar Asset Management Partners200,000 sh | 200,000 | $2.1M |
| Jump Financial195,824 sh | 195,824 | $2.1M |
| DIMENSIONAL FUND ADVISORS179,594 sh | 179,594 | $1.9M |
| Prosight Management174,800 sh | 174,800 | $1.8M |
| MARSHALL WACE, LLP83,682 sh | 83,682 | $883.7K |
| D. E. Shaw71,168 sh | 71,168 | $751.5K |
| NOMURA38,237 sh | 38,237 | $403.8K |
| ACADIAN ASSET MANAGEMENT32,778 sh | 32,778 | $345.0K |
| Vontobel Holding Ltd.28,450 sh | 28,450 | $300.4K |
| GSA CAPITAL PARTNERS LLP23,967 sh | 23,967 | $253.0K |
| FARALLON CAPITAL MANAGEMENT23,000 sh | 23,000 | $242.9K |
| WEALTH ENHANCEMENT ADVISORY SERVICES17,475 sh | 17,475 | $190.5K |
| XTX Topco Ltd15,251 sh | 15,251 | $161.1K |
| nVerses Capital14,404 sh | 14,404 | $152.1K |
| CANADA PENSION PLAN INVESTMENT BOARD13,900 sh | 13,900 | $146.8K |
| LMR Partners LLP10,634 sh | 10,634 | $112.3K |
| RAYMOND JAMES FINANCIAL10,276 sh | 10,276 | $108.5K |
| Leonteq Securities AG10,000 sh | 10,000 | $105.6K |
| Walleye Trading6,430 sh | 6,430 | $67.9K |
| Quantbot Technologies3,650 sh | 3,650 | $38.5K |
| ROTHSCHILD INVESTMENT45 sh | 45 | $475.00 |
| TWIN PEAKS WEALTH ADVISORS41 sh | 41 | $433.00 |
| Keating Financial Advisory Services18 sh | 18 | $190.00 |
| MAI Capital Management13 sh | 13 | $138.00 |
| Transamerica Financial Advisors5 sh | 5 | $52.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.