OMER — OMEROS CORP
Reported value held$264.14M
Funds holding (latest)37
SectorHealth Care
Funds holding (Q2 2026)27
Institutional value$191.60M · 35.01M sh
New / Add / Cut / Exit1 / 21 / 5 / 3
Top-5 / Top-10 concentration77.4% / 91.7%
Institutional holdings change
Accumulating +153.0%
(+21.17M sh)
Institutional value change
Up +32.1%
As of Q2 2026, 27 SEC-registered investment managers reported holding OMER (OMEROS CORP) in their latest 13F filings, with a combined reported value of $191.60M across 35.01M shares. That is +153.0% by share count (+21.17M shares) versus the previous quarter, while reported value moved +32.1%. Ownership is concentrated: the five largest holders account for 77.4% of reported value and the top ten for 91.7%.
Compared with the prior quarter, 1 opened new positions, 21 added to existing stakes, 5 trimmed, 3 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
OMER is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 27 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 6.04M | $57.48M | 0.00% | Add |
| D. E. Shaw & Co history | 18.38M | $34.69M | 0.02% | Add |
| UBS Group AG history | 3.15M | $29.94M | 0.00% | Add |
| Geode Capital Management history | 1.91M | $18.21M | 0.00% | Add |
| Citadel Advisors history | 829.99K | $7.89M | 0.00% | Add |
| Invesco Ltd history | 751.77K | $7.15M | 0.00% | Add |
| Northern Trust Corp history | 727.35K | $6.92M | 0.00% | Add |
| Charles Schwab Investment Management history | 604.63K | $5.75M | 0.00% | Add |
| Two Sigma Investments history | 402.66K | $3.83M | 0.00% | Add |
| Morgan Stanley history | 394.46K | $3.75M | 0.00% | Add |
| Millennium Management history | 343.84K | $3.27M | 0.00% | Reduce |
| Wellington Management Group history | 204.54K | $1.95M | 0.00% | Add |
| BNY Mellon history | 195.99K | $1.86M | 0.00% | Add |
| Bank of America Corp history | 194.14K | $1.85M | 0.00% | Reduce |
| Goldman Sachs Group history | 157.01K | $1.49M | 0.00% | Reduce |
| Wells Fargo & Co history | 156.89K | $1.49M | 0.00% | Add |
| Balyasny Asset Management history | 83.56K | $794.64K | 0.00% | Add |
| Deutsche Bank AG history | 75.05K | $713.75K | 0.00% | Add |
| Citigroup Inc history | 72.83K | $692.60K | 0.00% | Add |
| Legal & General Investment Management America history | 44.69K | $424.96K | 0.00% | Add |
| JPMorgan Chase & Co history | 42.25K | $418.67K | 0.00% | New |
| Prudential Financial history | 42.38K | $403.08K | 0.00% | Add |
| AQR Capital Management history | 29.73K | $282.69K | 0.00% | Reduce |
| Manulife Financial history | 18.96K | $180.36K | 0.00% | Add |
| Fidelity Management & Research (FMR) history | 15.64K | $148.76K | 0.00% | Reduce |
| PNC Financial Services history | 410 | $3.90K | 0.00% | Add |
| T. Rowe Price Associates history | 129.55K | $1.23K | 0.00% | Add |
Q1 2026 — 29 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 5.31M | $56.07M | 0.00% | Add |
| UBS Group AG history | 2.34M | $24.72M | 0.00% | Add |
| Geode Capital Management history | 1.75M | $18.51M | 0.00% | Add |
| Citadel Advisors history | 714.15K | $7.54M | 0.00% | Reduce |
| Charles Schwab Investment Management history | 582.51K | $6.15M | 0.00% | Reduce |
| Northern Trust Corp history | 563.87K | $5.95M | 0.00% | Add |
| Millennium Management history | 410.61K | $4.34M | 0.00% | Reduce |
| Morgan Stanley history | 317.89K | $3.36M | 0.00% | Reduce |
| Two Sigma Investments history | 286.47K | $3.03M | 0.00% | Reduce |
| Bank of America Corp history | 204.81K | $2.16M | 0.00% | Add |
| Goldman Sachs Group history | 202.89K | $2.14M | 0.00% | Reduce |
| Wellington Management Group history | 187.30K | $1.98M | 0.00% | Reduce |
| Invesco Ltd history | 180.63K | $1.91M | 0.00% | Add |
| BNY Mellon history | 166.25K | $1.76M | 0.00% | Hold |
| Wells Fargo & Co history | 118.34K | $1.25M | 0.00% | Reduce |
| Marshall Wace history | 83.68K | $883.68K | 0.00% | New |
| D. E. Shaw & Co history | 71.17K | $751.53K | 0.00% | Reduce |
| Deutsche Bank AG history | 55.03K | $581.12K | 0.00% | Add |
| Citigroup Inc history | 30.79K | $325.14K | 0.00% | Add |
| AQR Capital Management history | 30.18K | $318.68K | 0.00% | Add |
| Balyasny Asset Management history | 29.08K | $307.12K | 0.00% | New |
| Farallon Capital Management history | 23.00K | $242.88K | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 18.68K | $197.22K | 0.00% | Add |
| Manulife Financial history | 18.45K | $194.87K | 0.00% | Reduce |
| CPP Investments history | 13.90K | $146.78K | 0.00% | Reduce |
| Prudential Financial history | 12.90K | $136.28K | 0.00% | New |
| Legal & General Investment Management America history | 6.07K | $64.08K | 0.00% | Reduce |
| PNC Financial Services history | 377 | $3.98K | 0.00% | Hold |
| T. Rowe Price Associates history | 107.29K | $1.13K | 0.00% | Add |
Q4 2025 — 28 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 5.06M | $86.95M | 0.00% | Add |
| Vanguard Group history | 4.01M | $68.93M | 0.00% | Add |
| UBS Group AG history | 2.22M | $38.18M | 0.01% | Add |
| Geode Capital Management history | 1.63M | $28.03M | 0.00% | Add |
| Citadel Advisors history | 1.04M | $17.92M | 0.00% | Add |
| D. E. Shaw & Co history | 755.00K | $12.97M | 0.01% | Reduce |
| Charles Schwab Investment Management history | 593.22K | $10.19M | 0.00% | Add |
| Northern Trust Corp history | 526.73K | $9.05M | 0.00% | Reduce |
| Two Sigma Investments history | 524.76K | $9.01M | 0.01% | Reduce |
| Millennium Management history | 441.81K | $7.59M | 0.00% | Add |
| Morgan Stanley history | 386.15K | $6.63M | 0.00% | Reduce |
| Goldman Sachs Group history | 227.29K | $3.90M | 0.00% | Reduce |
| Wellington Management Group history | 202.62K | $3.48M | 0.00% | Add |
| BNY Mellon history | 165.78K | $2.85M | 0.00% | Add |
| Wells Fargo & Co history | 165.28K | $2.84M | 0.00% | Add |
| Invesco Ltd history | 154.78K | $2.66M | 0.00% | Add |
| Deutsche Bank AG history | 48.69K | $836.56K | 0.00% | Add |
| JPMorgan Chase & Co history | 37.19K | $638.75K | 0.00% | Reduce |
| Citigroup Inc history | 27.49K | $472.12K | 0.00% | Add |
| Farallon Capital Management history | 23.00K | $395.02K | 0.00% | New |
| AQR Capital Management history | 22.84K | $392.24K | 0.00% | Add |
| CPP Investments history | 21.70K | $372.70K | 0.00% | New |
| Manulife Financial history | 19.85K | $340.92K | 0.00% | Hold |
| Fidelity Management & Research (FMR) history | 18.07K | $310.32K | 0.00% | Add |
| Legal & General Investment Management America history | 6.97K | $119.73K | 0.00% | Reduce |
| Bank of America Corp history | 15.00K | $14.96K | 0.00% | Hold |
| PNC Financial Services history | 377 | $6.47K | 0.00% | Reduce |
| T. Rowe Price Associates history | 95.75K | $1.64K | 0.00% | Add |
Q3 2025 — 28 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 4.45M | $18.25M | 0.00% | Add |
| Vanguard Group history | 3.35M | $13.72M | 0.00% | Add |
| Morgan Stanley history | 1.99M | $8.16M | 0.00% | Add |
| Geode Capital Management history | 1.54M | $6.30M | 0.00% | Add |
| D. E. Shaw & Co history | 1.01M | $4.12M | 0.00% | Reduce |
| Two Sigma Investments history | 933.31K | $3.83M | 0.01% | Add |
| Citadel Advisors history | 799.83K | $3.28M | 0.00% | Add |
| UBS Group AG history | 709.09K | $2.91M | 0.00% | Reduce |
| Charles Schwab Investment Management history | 553.47K | $2.27M | 0.00% | Add |
| Northern Trust Corp history | 535.70K | $2.20M | 0.00% | Add |
| Marshall Wace history | 464.18K | $1.90M | 0.00% | Reduce |
| JPMorgan Chase & Co history | 416.15K | $1.71M | 0.00% | Add |
| Millennium Management history | 401.81K | $1.65M | 0.00% | Add |
| Renaissance Technologies history | 344.50K | $1.41M | 0.00% | Reduce |
| Goldman Sachs Group history | 336.09K | $1.38M | 0.00% | Add |
| Wellington Management Group history | 194.45K | $797.23K | 0.00% | Add |
| BNY Mellon history | 162.34K | $665.61K | 0.00% | Add |
| Wells Fargo & Co history | 134.10K | $549.83K | 0.00% | Add |
| Invesco Ltd history | 122.08K | $500.51K | 0.00% | Add |
| Deutsche Bank AG history | 40.80K | $167.29K | 0.00% | Add |
| AQR Capital Management history | 21.31K | $87.36K | 0.00% | Add |
| Manulife Financial history | 19.90K | $81.58K | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 13.19K | $54.08K | 0.00% | Add |
| Legal & General Investment Management America history | 7.08K | $29.05K | 0.00% | Add |
| Citigroup Inc history | 5.52K | $22.62K | 0.00% | Reduce |
| Bank of America Corp history | 15.00K | $13.95K | 0.00% | Hold |
| PNC Financial Services history | 674 | $2.76K | 0.00% | Add |
| T. Rowe Price Associates history | 89.53K | $368 | 0.00% | Add |
Q2 2025 — 28 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 4.05M | $12.15M | 0.00% | Reduce |
| Vanguard Group history | 3.28M | $9.85M | 0.00% | Add |
| D. E. Shaw & Co history | 1.65M | $4.94M | 0.00% | Reduce |
| Geode Capital Management history | 1.37M | $4.11M | 0.00% | Hold |
| Morgan Stanley history | 1.36M | $4.07M | 0.00% | Add |
| UBS Group AG history | 868.50K | $2.61M | 0.00% | Add |
| Marshall Wace history | 741.38K | $2.22M | 0.00% | Add |
| Two Sigma Investments history | 670.22K | $2.01M | 0.00% | Add |
| Northern Trust Corp history | 484.77K | $1.45M | 0.00% | Hold |
| Charles Schwab Investment Management history | 479.68K | $1.44M | 0.00% | Add |
| Citadel Advisors history | 388.21K | $1.16M | 0.00% | Reduce |
| Renaissance Technologies history | 382.70K | $1.15M | 0.00% | New |
| Millennium Management history | 269.42K | $808.26K | 0.00% | Reduce |
| Goldman Sachs Group history | 253.96K | $761.89K | 0.00% | Add |
| Wellington Management Group history | 163.41K | $490.24K | 0.00% | Add |
| BNY Mellon history | 147.88K | $443.65K | 0.00% | Reduce |
| Wells Fargo & Co history | 122.39K | $367.16K | 0.00% | Add |
| Invesco Ltd history | 116.69K | $350.06K | 0.00% | Add |
| Deutsche Bank AG history | 35.10K | $105.29K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 31.98K | $95.95K | 0.00% | Reduce |
| Citigroup Inc history | 22.69K | $68.07K | 0.00% | Reduce |
| Manulife Financial history | 20.56K | $61.68K | 0.00% | Add |
| AQR Capital Management history | 13.86K | $41.59K | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 11.64K | $34.92K | 0.00% | Reduce |
| Legal & General Investment Management America history | 6.10K | $18.30K | 0.00% | Add |
| Bank of America Corp history | 15.00K | $13.90K | 0.00% | Hold |
| PNC Financial Services history | 653 | $1.96K | 0.00% | Add |
| T. Rowe Price Associates history | 76.79K | $231 | 0.00% | Add |
Q1 2025 — 29 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 4.38M | $36.03M | 0.00% | Add |
| Vanguard Group history | 3.24M | $26.61M | 0.00% | Add |
| D. E. Shaw & Co history | 14.88M | $13.54M | 0.01% | Hold |
| Geode Capital Management history | 1.37M | $11.26M | 0.00% | Add |
| Morgan Stanley history | 760.36K | $6.25M | 0.00% | Add |
| UBS Group AG history | 660.66K | $5.43M | 0.00% | Reduce |
| Marshall Wace history | 644.15K | $5.29M | 0.01% | Add |
| Northern Trust Corp history | 484.63K | $3.98M | 0.00% | Reduce |
| Charles Schwab Investment Management history | 463.88K | $3.81M | 0.00% | Reduce |
| Citadel Advisors history | 415.93K | $3.42M | 0.00% | Add |
| Millennium Management history | 315.25K | $2.59M | 0.00% | Add |
| Goldman Sachs Group history | 181.16K | $1.49M | 0.00% | Reduce |
| BNY Mellon history | 151.06K | $1.24M | 0.00% | Add |
| Wellington Management Group history | 136.00K | $1.12M | 0.00% | New |
| Two Sigma Investments history | 105.64K | $868.35K | 0.00% | Reduce |
| Invesco Ltd history | 87.04K | $715.50K | 0.00% | Add |
| Citigroup Inc history | 50.11K | $411.94K | 0.00% | Add |
| Wells Fargo & Co history | 46.21K | $379.81K | 0.00% | Add |
| Franklin Resources history | 42.58K | $349.98K | 0.00% | Add |
| Deutsche Bank AG history | 42.02K | $345.40K | 0.00% | Add |
| JPMorgan Chase & Co history | 35.78K | $294.08K | 0.00% | Add |
| AQR Capital Management history | 34.70K | $285.23K | 0.00% | Reduce |
| Manulife Financial history | 20.00K | $164.42K | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 13.34K | $109.66K | 0.00% | Reduce |
| Balyasny Asset Management history | 12.12K | $99.65K | 0.00% | New |
| Legal & General Investment Management America history | 5.46K | $44.86K | 0.00% | Hold |
| Bank of America Corp history | 15.00K | $13.72K | 0.00% | Hold |
| PNC Financial Services history | 313 | $2.57K | 0.00% | Add |
| T. Rowe Price Associates history | 75.50K | $621 | 0.00% | Add |
New Positions (Q2 2026)
- JPMorgan Chase & Co 42.25K sh · $418.67K
Fully Exited (vs previous quarter)
- Marshall Wace sold 83.68K sh · $883.68K
- Farallon Capital Management sold 23.00K sh · $242.88K
- CPP Investments sold 13.90K sh · $146.78K
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 | Q4 2023 | Q3 2023 | Q2 2023 | Q1 2023 | Q4 2022 | Q3 2022 | Q2 2022 | Q1 2022 | Q4 2021 | Q3 2021 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BlackRock Inc | 6.04M | 5.31M | 5.06M | 4.45M | 4.05M | 4.38M | 4.30M | 4.23M | — | — | — | — | — | — | — | — | — | — | — | — |
| D. E. Shaw & Co | 18.38M | 71.17K | 755.00K | 1.01M | 1.65M | 14.88M | 14.88M | 1.61M | 1.58M | 1.68M | 1.49M | 1.36M | 1.64M | 1.46M | 1.75M | 9.75M | 2.16M | 9.75M | 9.75M | 9.75M |
| UBS Group AG | 3.15M | 2.34M | 2.22M | 709.09K | 868.50K | 660.66K | 849.19K | 450.07K | 482.13K | 538.68K | 494.55K | 590.64K | 581.47K | 522.87K | 653.66K | 652.74K | 674.78K | 544.52K | 543.77K | 523.81K |
| Geode Capital Management | 1.91M | 1.75M | 1.63M | 1.54M | 1.37M | 1.37M | 1.34M | 1.34M | 1.33M | 1.38M | 1.34M | 1.28M | 1.25M | 631.89K | 605.81K | 598.55K | 631.47K | 1.11M | 1.09M | 1.07M |
| Citadel Advisors | 829.99K | 714.15K | 1.04M | 799.83K | 388.21K | 415.93K | 330.62K | 214.71K | 209.18K | 145.66K | 205.71K | 249.74K | 167.06K | 284.05K | 393.01K | 412.60K | 709.38K | 477.22K | 215.10K | 387.75K |
| Invesco Ltd | 751.77K | 180.63K | 154.78K | 122.08K | 116.69K | 87.04K | 32.35K | 34.40K | 37.47K | 36.67K | 42.39K | 66.55K | 32.97K | — | 12.13K | — | — | 26.81K | 26.89K | 29.01K |
| Northern Trust Corp | 727.35K | 563.87K | 526.73K | 535.70K | 484.77K | 484.63K | 509.64K | 509.53K | 512.81K | 554.11K | 559.05K | 546.04K | 553.61K | 155.28K | 150.72K | 151.00K | 149.24K | 648.19K | 671.75K | 691.75K |
| Charles Schwab Investment Management | 604.63K | 582.51K | 593.22K | 553.47K | 479.68K | 463.88K | 475.53K | 485.04K | 466.58K | 504.37K | 469.17K | 490.97K | 466.08K | 336.28K | 312.41K | 308.24K | 280.87K | 456.89K | 436.37K | 429.99K |
| Two Sigma Investments | 402.66K | 286.47K | 524.76K | 933.31K | 670.22K | 105.64K | 162.99K | 149.79K | 159.45K | 54.92K | 47.60K | 153.46K | 59.80K | 59.80K | 199.24K | 98.20K | 687.90K | 226.79K | 548.32K | 221.80K |
| Morgan Stanley | 394.46K | 317.89K | 386.15K | 1.99M | 1.36M | 760.36K | 333.88K | 297.93K | 197.35K | 215.55K | 282.40K | 237.98K | 222.41K | 264.31K | 197.88K | 370.42K | 826.20K | 685.01K | 1.06M | 238.73K |
| Millennium Management | 343.84K | 410.61K | 441.81K | 401.81K | 269.42K | 315.25K | 85.67K | 58.58K | 16.97K | 26.62K | 10.62K | — | 345.86K | 334.33K | 353.39K | 505.39K | 1.22M | 423.75K | 1.17M | 192.24K |
| Wellington Management Group | 204.54K | 187.30K | 202.62K | 194.45K | 163.41K | 136.00K | — | 76.94K | — | 178.82K | — | — | — | — | 390.66K | 379.63K | 199.60K | 199.60K | 169.79K | — |
| BNY Mellon | 195.99K | 166.25K | 165.78K | 162.34K | 147.88K | 151.06K | 147.74K | 152.66K | 218.58K | 187.50K | 202.31K | 202.72K | 202.59K | 53.28K | 27.95K | 27.95K | 31.18K | 205.16K | 199.22K | 203.51K |
| Bank of America Corp | 194.14K | 204.81K | 15.00K | 15.00K | 15.00K | 15.00K | 15.00K | 15.00K | 15.00K | 15.00K | 15.00K | 15.00K | 15.00K | 88.89K | 264.36K | 210.68K | 380.68K | 194.66K | 324.93K | 154.07K |
| Goldman Sachs Group | 157.01K | 202.89K | 227.29K | 336.09K | 253.96K | 181.16K | 211.60K | 178.16K | 90.51K | 47.85K | 41.86K | 106.50K | 140.12K | 239.03K | 24.54K | 19.89K | 111.91K | 200.24K | 204.29K | 304.48K |
| Wells Fargo & Co | 156.89K | 118.34K | 165.28K | 134.10K | 122.39K | 46.21K | 33.15K | 27.90K | 27.40K | 23.78K | 21.15K | 17.50K | 27.71K | 4.03K | 4.33K | 8.02K | 10.12K | 17.37K | 38.08K | 22.88K |
| Balyasny Asset Management | 83.56K | 29.08K | — | — | — | 12.12K | — | — | — | — | — | — | — | 16.90K | — | — | 15.38K | — | — | — |
| Deutsche Bank AG | 75.05K | 55.03K | 48.69K | 40.80K | 35.10K | 42.02K | 40.05K | 28.98K | 23.79K | 28.37K | 29.46K | 29.46K | 35.11K | 20.49K | 50.49K | 55.49K | 90.49K | 163.62K | 168.10K | 782.00K |
| Citigroup Inc | 72.83K | 30.79K | 27.49K | 5.52K | 22.69K | 50.11K | 44.17K | 41.05K | 12.87K | 11.20K | 8.77K | 901 | 19.20K | 68.03K | 755 | 3.76K | 2.09K | 13.14K | 56.71K | 61.20K |
| Legal & General Investment Management America | 44.69K | 6.07K | 6.97K | 7.08K | 6.10K | 5.46K | 5.46K | 5.46K | 5.46K | 5.71K | 5.71K | 5.71K | 6.47K | — | — | — | — | 39.90K | 39.90K | 23.86K |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details