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, Q3 2025
Institutional positions in Gossamer Bio, Inc. as of Sep 30, 2025. 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
- 164
- +41 vs. Q2 2025
- Shares held
- 180.1M
- +3.30M (+1.9%) vs. Q2 2025
- Total value
- $473.7M
- +$255.7M (+117.3%) vs. Q2 2025
- New holders
- 56
- 49 more added
- Sold out
- 15
- 44 more reduced
1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Gossamer Bio, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Lazard Asset Management LLC | 41,700 | $109.7K | 0.00% | −25,662−38.1% | Reduced |
| Letko, Brosseau & Associates Inc | 39,400 | $103.6K | 0.00% | +39,400 | New |
| DLD Asset Management, LP | 37,543 | $98.7K | 0.01% | +37,543 | New |
| Voya Investment Management LLC | 36,510 | $96.0K | 0.00% | −17,918−32.9% | Reduced |
| Bank of Nova Scotia | 35,000 | $92.0K | 0.00% | +35,000 | New |
| ProShare Advisors LLC | 32,475 | $85.4K | 0.00% | −6,471−16.6% | Reduced |
| Sivia Capital Partners, LLC | 31,142 | $81.9K | 0.02% | +1,124+3.7% | Added |
| Citigroup Inc | 30,015 | $78.9K | 0.00% | −37,419−55.5% | Reduced |
| Panagora Asset Management Inc | 29,899 | $78.6K | 0.00% | +29,899 | New |
| Gerber, LLC | 28,249 | $74.3K | 0.05% | +28,249 | New |
| Advisor Group Holdings, Inc. | 28,275 | $70.1K | 0.00% | +126+0.4% | Added |
| HSBC Holdings PLC | 25,969 | $68.2K | 0.00% | +7,903+43.7% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 25,449 | $66.9K | 0.00% | +25,449 | New |
| CWM, LLC | 25,017 | $66.0K | 0.00% | +25,017 | New |
| Clearstead Advisors, LLC | 23,884 | $62.8K | 0.00% | +334+1.4% | Added |
| Cerity Partners LLC | 22,839 | $60.1K | 0.00% | +9,078+66.0% | Added |
| Mariner, LLC | 22,469 | $59.1K | 0.00% | +22,469 | New |
| Caitong International Asset Management Co., Ltd | 21,637 | $56.9K | 0.04% | +21,637 | New |
| SG Americas Securities, LLC | 21,195 | $56.0K | 0.00% | +21,195 | New |
| Legal & General Group Plc | 20,891 | $54.8K | 0.00% | −268−1.3% | Reduced |
| CIBC Bancorp USA Inc. | 20,246 | $53.2K | 0.00% | +20,246 | New |
| CI Private Wealth, LLC | 20,006 | $52.6K | 0.00% | −3,673,677−99.5% | Reduced |
| Evernest Financial Advisors, LLC | 20,000 | $52.6K | 0.01% | +20,000 | New |
| HighTower Advisors, LLC | 19,501 | $51.3K | 0.00% | +19,501 | New |
| Voleon Capital Management LP | 19,500 | $51.3K | 0.00% | +19,500 | New |
| Fullcircle Wealth LLC | 22,100 | $50.8K | 0.02% | +22,100 | New |
| Susquehanna Portfolio Strategies, LLC | 18,900 | $49.7K | 0.00% | +18,900 | New |
| Creative Planning | 18,655 | $49.1K | 0.00% | +18,655 | New |
| Wealth Enhancement Advisory Services, LLC | 19,197 | $48.0K | 0.00% | +19,197 | New |
| Drive Wealth Management, LLC | 18,200 | $47.9K | 0.01% | −7,274−28.6% | Reduced |
| Jones Financial Companies LLLP | 17,360 | $46.9K | 0.00% | +10,027+136.7% | Added |
| JustInvest LLC | 16,719 | $44.0K | 0.00% | +231+1.4% | Added |
| Two Sigma Securities, LLC | 16,337 | $43.0K | 0.01% | +16,337 | New |
| Kestra Advisory Services, LLC | 16,000 | $42.1K | 0.00% | +16,000 | New |
| Ameritas Investment Partners, Inc. | 15,867 | $41.7K | 0.00% | −3,524−18.2% | Reduced |
| Mercer Global Advisors Inc | 15,744 | $41.4K | 0.00% | +15,744 | New |
| Xponance, Inc. | 14,822 | $39.0K | 0.00% | +145+1.0% | Added |
| Principal Financial Group Inc | 14,578 | $38.3K | 0.00% | +1,070+7.9% | Added |
| Brevan Howard Capital Management LP | 14,093 | $37.1K | 0.00% | +14,093 | New |
| Brighton Jones LLC | 13,754 | $36.2K | 0.00% | +13,754 | New |
| Tower Research Capital LLC (TRC) | 12,948 | $34.1K | 0.00% | +10,699+475.7% | Added |
| Wolverine Trading, LLC | 11,793 | $33.3K | 0.00% | +11,793 | New |
| California State Teachers Retirement System | 11,859 | $31.2K | 0.00% | +9+0.1% | Added |
| SRS Capital Advisors, Inc. | 10,859 | $28.6K | 0.00% | +10,859 | New |
| Rialto Wealth Management, LLC | 10,752 | $28.3K | 0.01% | 00.0% | Unchanged |
| GTS Securities LLC | 10,627 | $27.9K | 0.00% | +10,627 | New |
| MML Investors Services, LLC | 10,360 | $27.2K | 0.00% | +10,360 | New |
| Ciovacco Capital Management LLC | 10,204 | $26.8K | 0.01% | +10,204 | New |
| Rockefeller Capital Management L.P. | 10,200 | $26.8K | 0.00% | +10,200 | New |
| Texas Yale Capital Corp. | 10,000 | $26.3K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 6,486 | $17.0K | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 5,196 | $13.7K | 0.00% | +4,243+445.2% | Added |
| Essential Partners LLC | 1,477 | $3.88K | 0.00% | +1,477 | New |
| Steward Partners Investment Advisory, LLC | 1,000 | $2.63K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 991 | $2.61K | 0.00% | +991 | New |
| Federation des caisses Desjardins du Quebec | 750 | $1.97K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 468 | $1.23K | 0.00% | +468 | New |
| Sterling Capital Management LLC | 460 | $1.21K | 0.00% | +1+0.2% | Added |
| The PNC Financial Services Group, Inc. | 289 | $760 | 0.00% | +289 | New |
| True Wealth Design, LLC | 207 | $545 | 0.00% | +207 | New |
| IFP Advisors, Inc | 159 | $418 | 0.00% | +159 | New |
| Farther Finance Advisors, LLC | 70 | $184 | 0.00% | +70 | New |
| Morton Brown Family Wealth, LLC | 25 | $66 | 0.00% | 00.0% | Unchanged |
| Capital Advisors, Ltd. LLC | 17 | $0 | 0.00% | 00.0% | Unchanged |
| Laurion Capital Management LP | 0 | $0 | 0.00% | −1,343,772−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −897,388−100.0% | Sold out |
| DAFNA Capital Management LLC | 0 | $0 | 0.00% | −849,921−100.0% | Sold out |
| Highbridge Capital Management LLC | 0 | $0 | 0.00% | −497,694−100.0% | Sold out |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −434,049−100.0% | Sold out |
| Opti Capital Management, LP | 0 | $0 | 0.00% | – | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −382,677−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −105,175−100.0% | Sold out |
| Diametric Capital, LP | 0 | $0 | 0.00% | −89,382−100.0% | Sold out |
| Silvercrest Asset Management Group LLC | 0 | $0 | 0.00% | −26,158−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −25,480−100.0% | Sold out |
| US Bancorp | 0 | $0 | 0.00% | −24,100−100.0% | Sold out |
| Banco BTG Pactual S.A. | 0 | $0 | 0.00% | −22,009−100.0% | Sold out |
| Dauntless Investment Group, LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −270−100.0% | Sold out |
| CIBC World Markets Corp | – | – | – | – | Not filed |