GOSS Gossamer Bio, Inc.
Gossamer Bio, Inc. (GOSS) Institutional Ownership
What the institutions did with GOSS last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Only 7 managers reported a position this quarter, so the percentages above describe a very small sample.
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Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| D. E. Shaw & Co., Inc. | 41.0M | 10.7% |
| 683 Capital Management, LLC | 39.2M | 10.3% |
| DeepCurrents Investment Group LLC | 37.7M | 9.9% |
| Context Capital Management, LLC | 28.9M | 7.6% |
| Worth Venture Partners, LLC | 25.0M | 6.6% |
| Kalehua Capital Management LLC | 22.3M | 5.8% |
| AQR CAPITAL MANAGEMENT LLC | 15.6M | 4.1% |
| GSA CAPITAL PARTNERS LLP | 15.0M | 3.9% |
| WOLVERINE ASSET MANAGEMENT LLC | 12.9M | 3.4% |
| RENAISSANCE TECHNOLOGIES LLC | 11.6M | 3.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 9.4M | 2.5% |
| ARCH Venture Management, LLC | 8.1M | 2.1% |
| BARCLAYS PLC | 7.8M | 2.1% |
| Octagon Capital Advisors LP | 7.8M | 2.0% |
| BlackRock, Inc. | 7.7M | 2.0% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 7.6M | 2.0% |
| TWO SIGMA INVESTMENTS, LP | 7.4M | 1.9% |
| SAMSARA BIOCAPITAL, LLC | 7.2M | 1.9% |
| Qube Research & Technologies Ltd | 7.1M | 1.9% |
| Corient Private Wealth LP | 5.6M | 1.5% |
| Siren, L.L.C. | 5.2M | 1.4% |
| HHLR ADVISORS, LTD. | 5.0M | 1.3% |
| UBS Group AG | 3.1M | 0.8% |
| Squarepoint Ops LLC | 2.6M | 0.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 2.5M | 0.7% |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.