Security record · archived quarter
OMER
Omeros Corporation · Healthcare · Biotechnology
78Tracked holders
+7Δ holders
23.56MShares held
$249.21MReported value
+9New positions
−2Exits
Momentum inputs (comparable managers):
holder breadth +9.9% ·
share flow -19.2% ·
net new positions +9.0%
· formula
Ownership fragmentation: more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 2 | +1 | 33.71K | $644,171 | +1 | n/a |
| Q2 2026 | 75 | -1 | 26.88M | $255.76M | +8 | −9 |
| Q1 2026 | 78 | +7 | 23.56M | $249.21M | +9 | −2 |
| Q4 2025 | 71 | -2 | 30.19M | $466.97M | n/a | −2 |
| Q3 2025 | 17 | 0 | 17.59M | $72.13M | n/a | n/a |
| Q2 2025 | 14 | +1 | 14.04M | $42.12M | +1 | n/a |
| Q1 2025 | 10 | +1 | 6.15M | $50.54M | +1 | n/a |
| Q4 2024 | 9 | 0 | 4.83M | $47.77M | +1 | −1 |
| Q3 2024 | 8 | +1 | 3.34M | $13.26M | +1 | n/a |
| Q2 2024 | 7 | n/a | 3.21M | $13.02M | n/a | n/a |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 5.31M | +4.9% | $56.07M | 0.0% | ▲ Add | 4 | SEC ↗ ×10 |
| 2 | Vanguard Capital Management Llc | 2.98M | n/a | $31.50M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | UBS Group AG | 2.34M | +5.3% | $24.72M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 4 | State Street Global Advisors ✦ (passive) | 1.92M | +22.0% | $20.27M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 5 | Stifel Financial Corp | 1.83M | +1.2% | $19.34M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 6 | Geode Capital Management ✦ (passive) | 1.75M | +7.4% | $18.51M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 7 | Corient Private Wealth LP | 801.41K | -41.7% | $8.46M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 8 | Charles Schwab Investment… | 582.51K | -1.8% | $6.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 9 | Bank Of Montreal /Can/ | 568.43K | -5.5% | $6.00M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 10 | Northern Trust Corp | 563.87K | +7.0% | $5.95M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 11 | Susquehanna International Group, Llp | 485.03K | -34.6% | $5.12M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | Millennium Management ✦ | 410.61K | -7.1% | $4.34M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 13 | Morgan Stanley ✦ | 317.89K | -17.7% | $3.36M | 0.0% | ▼ Trim | 3 | SEC ↗ ×7 |
| 14 | Two Sigma Investments ✦ | 286.47K | -45.4% | $3.03M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 15 | Citadel Advisors ✦ | 260.05K | +8.2% | $2.75M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 16 | Bank Of America Corp /De/ | 204.81K | +78.4% | $2.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 17 | Goldman Sachs Group ✦ | 202.89K | -10.7% | $2.14M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 18 | Wellington Management ✦ | 187.30K | -7.6% | $1.98M | 0.0% | ▼ Trim | 5 | SEC ↗ ×3 |
| 19 | Invesco Ltd. | 180.63K | +16.7% | $1.91M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 20 | Dimensional Fund Advisors Lp | 179.59K | +85.2% | $1.90M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 21 | Bank of New York Mellon Corp | 166.25K | +0.3% | $1.76M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 22 | Nuveen, LLC | 154.20K | +0.7% | $1.63M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 23 | Jane Street Group, Llc | 145.31K | -68.7% | $1.53M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 24 | Wells Fargo & Company/Mn | 118.34K | -28.4% | $1.25M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 25 | Ameriprise Financial Inc | 117.95K | +0.8% | $1.25M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 26 | HighTower Advisors, LLC | 110.63K | +6.3% | $1.17M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 27 | Alliancebernstein L.P. | 66.99K | -8.8% | $1.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 28 | T. Rowe Price ✦ | 107.29K | +12.1% | $1.13M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 29 | Rhumbline Advisers | 102.82K | +2.7% | $1.09M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 30 | Marshall Wace ✦ | 83.68K | New | $883,682 | 0.0% | New | 1 | SEC ↗ ×2 |
| 31 | D. E. Shaw & Co. ✦ | 71.17K | -90.6% | $751,534 | 0.0% | ▼ Trim | 8 | SEC ↗ ×3 |
| 32 | Quantinno Capital Management LP | 61.54K | +145.4% | $649,873 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 33 | Mml Investors Services, Llc | 57.67K | -25.9% | $609,048 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 34 | Bnp Paribas Financial Markets | 56.91K | +248.0% | $600,948 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 35 | Deutsche Bank Ag\ | 55.03K | +13.0% | $581,117 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 36 | Focus Partners Wealth | 47.58K | -98.5% | $502,467 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 37 | Barclays Plc | 44.92K | -62.7% | $474,377 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 38 | Fifth Third Bancorp | 39.00K | +3800.0% | $411,840 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 39 | JPMorgan Chase ✦ | 41.72K | +12.2% | $409,273 | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 40 | Group One Trading Llc | 38.60K | -71.0% | $407,658 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 41 | Nomura Holdings Inc | 38.24K | -94.2% | $403,783 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 42 | Simplex Trading, Llc | 37.53K | -69.7% | $396,274 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 43 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 31.70K | +3.6% | $334,763 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 44 | Cerity Partners LLC | 31.59K | +3.7% | $333,548 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 45 | Citigroup Inc | 30.79K | +12.0% | $325,143 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 46 | AQR Capital Management ✦ | 30.18K | +32.1% | $318,679 | 0.0% | ▲ Add | 8 | SEC ↗ ×6 |
| 47 | Balyasny Asset Management L.P. | 29.08K | New | $307,116 | 0.0% | New | 1 | SEC ↗ |
| 48 | Creative Planning | 21.05K | +24.4% | $222,256 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 49 | New York State Common Retirement… | 20.71K | 0.0% | $218,729 | 0.0% | Held | 2 | SEC ↗ |
| 50 | LPL Financial LLC | 19.61K | New | $207,060 | 0.0% | New | 1 | SEC ↗ |
| 51 | Fidelity (FMR) ✦ | 18.68K | +3.4% | $197,225 | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 52 | Manufacturers Life Insurance… | 18.45K | -7.0% | $194,874 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 53 | Wealth Enhancement Advisory… | 17.48K | -44.9% | $190,478 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 54 | Russell Investments Group, Ltd. | 14.00K | -0.1% | $147,818 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 55 | Canada Pension Plan Investment Board | 13.90K | -35.9% | $146,784 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 56 | Sei Investments Co | 13.17K | -58.5% | $139,100 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 57 | ProShare Advisors LLC | 13.12K | -13.5% | $138,526 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 58 | Prudential Financial Inc | 12.90K | New | $136,277 | 0.0% | New | 1 | SEC ↗ |
| 59 | State Of Wisconsin Investment Board | 11.80K | New | $124,597 | 0.0% | New | 1 | SEC ↗ |
| 60 | Voya Investment Management Llc | 11.52K | +1.0% | $121,683 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 61 | LMR Partners LLP | 10.63K | New | $112,295 | 0.0% | New | 1 | SEC ↗ |
| 62 | Raymond James Financial Inc | 10.28K | -16.1% | $108,514 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 63 | Osaic Holdings, Inc. | 8.35K | +10.7% | $88,185 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 64 | Walleye Trading LLC | 6.43K | -90.8% | $67,901 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 65 | Legal & General Group Plc | 6.07K | -12.9% | $64,078 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 66 | Us Bancorp \De\ | 5.10K | New | $53,888 | 0.0% | New | 1 | SEC ↗ |
| 67 | California State Teachers… | 3.75K | -7.5% | $39,621 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 68 | Mirae Asset Global Investments Co.… | 3.70K | +7.3% | $39,051 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 69 | Optiver Holding B.V. | 3.68K | -1.8% | $38,871 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 70 | Assetmark, Inc | 3.60K | New | $38,016 | 0.0% | New | 1 | SEC ↗ |
| 71 | Cwm, Llc | 1.41K | +14.6% | $14,911 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | Jones Financial Companies Lllp | 1.19K | New | $12,331 | 0.0% | New | 1 | SEC ↗ ×2 |
| 73 | Rockefeller Capital Management L.P. | 975 | +400.0% | $10,296 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 74 | Zurcher Kantonalbank (Zurich… | 793 | +3.7% | $8,374 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 75 | Royal Bank Of Canada | 800 | -99.8% | $8,000 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 76 | UBS AM, a distinct business unit of… | 547 | +136.8% | $5,776 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 77 | Northwestern Mutual Wealth… | 500 | 0.0% | $5,280 | 0.0% | Held | 2 | SEC ↗ |
| 78 | Pnc Financial Services Group, Inc. | 377 | 0.0% | $3,982 | 0.0% | Held | 2 | SEC ↗ ×3 |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Marshall Wace | $883,682 | 0.0% |
| Balyasny Asset Management L.P. | $307,116 | 0.0% |
| LPL Financial LLC | $207,060 | 0.0% |
| Prudential Financial Inc | $136,277 | 0.0% |
| State Of Wisconsin Investment… | $124,597 | 0.0% |
| LMR Partners LLP | $112,295 | 0.0% |
| Us Bancorp \De\ | $53,888 | 0.0% |
| Assetmark, Inc | $38,016 | 0.0% |
| Jones Financial Companies Lllp | $12,331 | 0.0% |
Exited
| Man Group plc | $465,425 | was 0.0% |
| Daiwa Securities Group Inc. | $3,000 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1 holders, 4.17M shares, $8.90M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Sep 23
Borges David J.
Officer · 10.00K sh · $209,500
Sep 22
Borges David J.
Officer · 10.00K sh · $209,500
Aug 31
Cancelmo Peter B
Officer · 25.00K sh · $463,540
Aug 28
Cancelmo Peter B
Officer · 25.00K sh · $466,128
Aug 27
HANISH ARNOLD C
Director · 5.00K sh · $94,381
Aug 27
HANISH ARNOLD C
Director · 5.00K sh · $95,080
Aug 26
HANISH ARNOLD C
Director · 5.00K sh · $92,632
Aug 24
Borges David J.
Officer · 906 sh · $17,305
Aug 21
Borges David J.
Officer · 10.00K sh · $189,500
Aug 20
Cable Thomas J.
Director · 15.00K sh · $276,772
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Jul 29
SC 13G/A: BlackRock, Inc.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2026 ·
Methodology ·
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