Gossamer Bio, Inc.
GOSS- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001728117
No open-market purchases or sales by Gossamer Bio, Inc. insiders were filed in the last 90 days; 170 institutions reported holding it in 13F filings for Q2 2026, worth $60.8M in total; HHLR Advisors (Hillhouse) is the only superinvestor holding it.
13F holders, Q1 2026
Institutional positions in Gossamer Bio, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 185
- −7 vs. Q4 2025
- Shares held
- 169.8M
- −2.28M (−1.3%) vs. Q4 2025
- Total value
- $56.3M
- −$477.1M (−89.4%) vs. Q4 2025
- New holders
- 47
- 72 more added
- Sold out
- 54
- 48 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting GOSS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 170 | $60.8M |
| Q1 2026 | 185 | $56.3M |
| Q4 2025 | 195 | $573.4M |
| Q3 2025 | 164 | $473.7M |
| Q2 2025 | 124 | $218.0M |
| Q1 2025 | 119 | $186.9M |
| Q4 2024 | 105 | $155.0M |
| Q3 2024 | 100 | $172.6M |
| Q2 2024 | 94 | $164.7M |
| Q1 2024 | 109 | $233.5M |
| Q4 2023 | 98 | $192.0M |
| Q3 2023 | 96 | $171.2M |
| Q2 2023 | 99 | $74.4M |
| Q1 2023 | 111 | $97.9M |
| Q4 2022 | 120 | $225.1M |
| Q3 2022 | 160 | $1.02B |
| Q2 2022 | 129 | $533.2M |
| Q1 2022 | 141 | $519.8M |
| Q4 2021 | 133 | $664.9M |
| Q3 2021 | 128 | $687.7M |
| Q2 2021 | 115 | $431.1M |
| Q1 2021 | 123 | $501.9M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Gossamer Bio, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Algert Global LLC | 0 | $0 | 0.00% | −332,336−100.0% | Sold out |
| Rafferty Asset Management, LLC | 0 | $0 | 0.00% | −312,804−100.0% | Sold out |
| Monaco Asset Management SAM | 0 | $0 | 0.00% | −309,211−100.0% | Sold out |
| EAM Investors, LLC | 0 | $0 | 0.00% | −278,422−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −278,189−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −205,639−100.0% | Sold out |
| Stonepine Capital Management, LLC | 0 | $0 | 0.00% | −204,770−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −155,591−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −136,200−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −127,299−100.0% | Sold out |
| Profund Advisors LLC | 0 | $0 | 0.00% | −116,503−100.0% | Sold out |
| Susquehanna Portfolio Strategies, LLC | 0 | $0 | 0.00% | −111,350−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −105,085−100.0% | Sold out |
| HB Wealth Management, LLC | 0 | $0 | 0.00% | −95,924−100.0% | Sold out |
| Lighthouse Investment Partners, LLC | 0 | $0 | 0.00% | −92,500−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −85,645−100.0% | Sold out |
| VARCOV Co. | 0 | $0 | 0.00% | −83,868−100.0% | Sold out |
| Voleon Capital Management LP | 0 | $0 | 0.00% | −60,235−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −56,668−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −51,129−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −36,467−100.0% | Sold out |
| Mangrove Partners | 0 | $0 | 0.00% | −30,747−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −27,091−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −27,056−100.0% | Sold out |
| State of Wisconsin Investment Board | 0 | $0 | 0.00% | −26,304−100.0% | Sold out |
| Nomura Holdings Inc | 0 | $0 | 0.00% | −16,000−100.0% | Sold out |
| Eaton Financial Holdings Company, LLC | 0 | $0 | 0.00% | −14,199−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −14,180−100.0% | Sold out |
| O'Shaughnessy Asset Management, LLC | 0 | $0 | 0.00% | −13,107−100.0% | Sold out |
| Ciovacco Capital Management LLC | 0 | $0 | 0.00% | −10,204−100.0% | Sold out |
| Soltis Investment Advisors LLC | 0 | $0 | 0.00% | −10,099−100.0% | Sold out |
| Texas Yale Capital Corp. | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −6,037−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −4,098−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −2,100−100.0% | Sold out |
| Daiwa Securities Group Inc. | 0 | $0 | 0.00% | −771−100.0% | Sold out |
| GAMMA Investing LLC | 0 | $0 | 0.00% | −468−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| Capital Advisors, Ltd. LLC | 0 | $0 | 0.00% | −17−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Sherbrooke Park Advisers LLC | – | – | – | – | Not filed |
| CIBC World Markets Corp | – | – | – | – | Not filed |