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, Q4 2025
Institutional positions in Gossamer Bio, Inc. as of Dec 31, 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
- 195
- +35 vs. Q3 2025
- Shares held
- 185.0M
- +5.10M (+2.8%) vs. Q3 2025
- Total value
- $573.4M
- +$100.3M (+21.2%) vs. Q3 2025
- New holders
- 49
- 69 more added
- Sold out
- 14
- 49 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Gossamer Bio, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Commonwealth Equity Services, LLC | 78,756 | $244.1K | 0.00% | +36,085+84.6% | Added |
| CAPROCK Group, Inc. | 80,000 | $248.0K | 0.01% | +80,000 | New |
| VARCOV Co. | 83,868 | $260.0K | 0.10% | +83,868 | New |
| Intech Investment Management LLC | 85,582 | $265.3K | 0.00% | −15,265−15.1% | Reduced |
| MetLife Investment Management | 85,645 | $265.5K | 0.00% | −15,868−15.6% | Reduced |
| Susquehanna International Group, LLP | 88,455 | $274.2K | 0.00% | +88,455 | New |
| Sequoia Financial Advisors, LLC | 88,467 | $274.2K | 0.00% | −29,033−24.7% | Reduced |
| BNP Paribas Arbitrage, SA | 89,489 | $277.4K | 0.00% | −6,914−7.2% | Reduced |
| Lighthouse Investment Partners, LLC | 92,500 | $286.8K | 0.01% | +92,500 | New |
| HB Wealth Management, LLC | 95,924 | $297.4K | 0.00% | +1,176+1.2% | Added |
| EntryPoint Capital, LLC | 105,085 | $325.8K | 0.13% | +53,821+105.0% | Added |
| Victory Capital Management Inc | 105,554 | $327.2K | 0.00% | +328+0.3% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 107,467 | $333.5K | 0.00% | +20,193+23.1% | Added |
| Susquehanna Portfolio Strategies, LLC | 111,350 | $345.2K | 0.01% | +92,450+489.2% | Added |
| Price T Rowe Associates Inc | 113,138 | $351.0K | 0.00% | +12,480+12.4% | Added |
| Profund Advisors LLC | 116,503 | $361.2K | 0.01% | +116,503 | New |
| Brevan Howard Capital Management LP | 127,299 | $394.6K | 0.01% | +113,206+803.3% | Added |
| Prelude Capital Management, LLC | 136,200 | $422.2K | 0.03% | 00.0% | Unchanged |
| Birchview Capital, LP | 138,176 | $428.3K | 0.25% | 00.0% | Unchanged |
| Panagora Asset Management Inc | 147,296 | $456.6K | 0.00% | +117,397+392.6% | Added |
| Merit Financial Group, LLC | 155,178 | $481.1K | 0.00% | +20,490+15.2% | Added |
| Jane Street Group, LLC | 155,591 | $482.3K | 0.00% | −546,474−77.8% | Reduced |
| Russell Investments Group, Ltd. | 171,071 | $530.3K | 0.00% | −513,978−75.0% | Reduced |
| Bridgeway Capital Management, LLC | 176,000 | $545.6K | 0.01% | −159,900−47.6% | Reduced |
| Alliancebernstein L.P. | 190,220 | $589.7K | 0.00% | +91,540+92.8% | Added |
| D. E. Shaw & Co., Inc. | 198,709 | $616.0K | 0.00% | −50,109−20.1% | Reduced |
| Stonepine Capital Management, LLC | 204,770 | $634.8K | 0.50% | 00.0% | Unchanged |
| Atom Investors LP | 205,639 | $637.5K | 0.05% | +73,087+55.1% | Added |
| ADAR1 Capital Management, LLC | 212,531 | $658.8K | 0.05% | 00.0% | Unchanged |
| Rhumbline Advisers | 214,869 | $666.1K | 0.00% | −10,191−4.5% | Reduced |
| Squarepoint Ops LLC | 221,591 | $686.9K | 0.00% | +221,591 | New |
| SEI Investments Co | 228,896 | $709.6K | 0.00% | +167,710+274.1% | Added |
| Jain Global LLC | 278,189 | $862.4K | 0.01% | −776,167−73.6% | Reduced |
| EAM Investors, LLC | 278,422 | $863.1K | 0.10% | 00.0% | Unchanged |
| Smith, Moore & Co. | 280,000 | $868.0K | 0.07% | 00.0% | Unchanged |
| Mackenzie Financial Corp | 306,453 | $954.3K | 0.00% | −2,597−0.8% | Reduced |
| Nuveen, LLC | 308,522 | $956.4K | 0.00% | −768,613−71.4% | Reduced |
| Monaco Asset Management SAM | 309,211 | $958.6K | 0.28% | −1,070,205−77.6% | Reduced |
| Rafferty Asset Management, LLC | 312,804 | $969.7K | 0.00% | +312,804 | New |
| Algert Global LLC | 332,336 | $1.03M | 0.02% | +332,336 | New |
| LPL Financial LLC | 358,917 | $1.11M | 0.00% | +220,591+159.5% | Added |
| Wells Fargo & Company | 361,921 | $1.12M | 0.00% | +245,254+210.2% | Added |
| JPMorgan Chase & Co | 428,903 | $1.33M | 0.00% | +234,534+120.7% | Added |
| Bank of New York Mellon Corp | 447,901 | $1.39M | 0.00% | −310−0.1% | Reduced |
| Exome Asset Management LLC | 451,699 | $1.40M | 0.69% | 00.0% | Unchanged |
| XTX Topco Ltd | 456,329 | $1.41M | 0.04% | +181,547+66.1% | Added |
| Invesco Ltd. | 478,909 | $1.48M | 0.00% | +126,823+36.0% | Added |
| Silverback Asset Management LLC | 500,000 | $1.55M | 0.23% | 00.0% | Unchanged |
| Connor, Clark & Lunn Investment Management Ltd. | 528,053 | $1.64M | 0.00% | +502,604+1,974.9% | Added |
| Qube Research & Technologies Ltd | 540,567 | $1.68M | 0.00% | +331,778+158.9% | Added |
| Platinum Investment Management Ltd | 561,951 | $1.74M | 0.40% | −202,214−26.5% | Reduced |
| Barclays PLC | 576,533 | $1.79M | 0.00% | +304,827+112.2% | Added |
| Wellington Management Group LLP | 601,323 | $1.86M | 0.00% | −40,392−6.3% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 652,977 | $2.02M | 0.07% | +652,977 | New |
| Renaissance Technologies LLC | 658,888 | $2.04M | 0.00% | −2,321,300−77.9% | Reduced |
| Citadel Advisors LLC | 704,787 | $2.18M | 0.00% | −1,579,429−69.1% | Reduced |
| Arrowstreet Capital, Limited Partnership | 750,308 | $2.33M | 0.00% | +114,911+18.1% | Added |
| Alyeska Investment Group, L.P. | 909,087 | $2.82M | 0.01% | −1,000,000−52.4% | Reduced |
| Morgan Stanley | 918,888 | $2.85M | 0.00% | +352,469+62.2% | Added |
| HRT Financial LP | 956,879 | $2.97M | 0.01% | +956,879 | New |
| Monashee Investment Management LLC | 1,000,000 | $3.10M | 1.75% | +1,000,000 | New |
| Integral Health Asset Management, LLC | 1,000,000 | $3.10M | 0.16% | +1,000,000 | New |
| Walleye Capital LLC | 1,077,032 | $3.34M | 0.02% | +531,353+97.4% | Added |
| AQR Capital Management LLC | 1,119,240 | $3.47M | 0.00% | +472,625+73.1% | Added |
| Deutsche Bank AG | 1,284,335 | $3.98M | 0.00% | +5,414+0.4% | Added |
| Northern Trust Corp | 1,416,540 | $4.39M | 0.00% | −78,863−5.3% | Reduced |
| Balyasny Asset Management LLC | 1,516,691 | $4.70M | 0.01% | +746,117+96.8% | Added |
| MB Generational Wealth, LLC | 1,605,449 | $4.98M | 2.63% | +190,625+13.5% | Added |
| Charles Schwab Investment Management Inc | 1,685,778 | $5.23M | 0.00% | −43,856−2.5% | Reduced |
| UBS Group AG | 1,771,381 | $5.49M | 0.00% | −998,665−36.1% | Reduced |
| Goldman Sachs Group Inc | 1,792,114 | $5.56M | 0.00% | +1,492,532+498.2% | Added |
| Bank of America Corp | 1,906,669 | $5.91M | 0.00% | −975,235−33.8% | Reduced |
| Silverarc Capital Management, LLC | 2,135,722 | $6.62M | 0.96% | −2,643,360−55.3% | Reduced |
| Jacobs Levy Equity Management, Inc | 2,178,033 | $6.75M | 0.03% | +769,915+54.7% | Added |
| Two Sigma Advisers, LP | 2,596,900 | $8.05M | 0.02% | +726,800+38.9% | Added |
| Opaleye Management Inc. | 2,720,000 | $8.43M | 1.11% | −5,000−0.2% | Reduced |
| Perceptive Advisors LLC | 3,139,669 | $9.73M | 0.18% | −673,128−17.7% | Reduced |
| Rock Springs Capital Management LP | 3,266,960 | $10.1M | 0.52% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 3,397,110 | $10.5M | 0.02% | +1,109,859+48.5% | Added |
| Millennium Management LLC | 3,584,288 | $11.1M | 0.01% | −35,041−1.0% | Reduced |
| CI Private Wealth, LLC | 3,845,885 | $11.9M | 0.02% | +3,825,879+19,123.7% | Added |
| FMR LLC | 4,237,590 | $13.1M | 0.00% | +152,244+3.7% | Added |
| Acadian Asset Management LLC | 4,416,903 | $13.7M | 0.02% | −596,066−11.9% | Reduced |
| Palo Alto Investors LP | 4,471,592 | $13.9M | 1.93% | −992,757−18.2% | Reduced |
| Geode Capital Management, LLC | 4,872,714 | $15.1M | 0.00% | +183,183+3.9% | Added |
| HHLR Advisors, Ltd.SuperinvestorHHLR Advisors (Hillhouse) | 4,974,041 | $15.4M | 0.50% | 00.0% | Unchanged |
| 683 Capital Management, LLC | 5,190,800 | $16.1M | 1.34% | +131,600+2.6% | Added |
| Siren, L.L.C. | 5,208,968 | $16.1M | 0.48% | 00.0% | Unchanged |
| Samsara BioCapital, LLC | 7,222,559 | $22.4M | 2.31% | +1,092,291+17.8% | Added |
| ARCH Venture Management, LLC | 8,055,916 | $25.0M | 3.83% | 00.0% | Unchanged |
| State Street Corp | 9,310,969 | $28.9M | 0.00% | +5,427,302+139.7% | Added |
| Vanguard Group Inc | 12,873,209 | $39.9M | 0.00% | +863,436+7.2% | Added |
| Octagon Capital Advisors LP | 13,915,371 | $43.1M | 5.40% | −3,134,629−18.4% | Reduced |
| BlackRock, Inc. | 17,056,878 | $52.9M | 0.00% | +3,210,824+23.2% | Added |
| NEA Management Company, LLC | 18,093,034 | $56.1M | 2.86% | 00.0% | Unchanged |
| Colony Group, LLC | 0 | $0 | 0.00% | −1,325,198−100.0% | Sold out |
| Eversept Partners, LP | 0 | $0 | 0.00% | −925,233−100.0% | Sold out |
| Tang Capital Management LLC | 0 | $0 | 0.00% | −800,000−100.0% | Sold out |
| Adage Capital Partners GP, L.L.C. | 0 | $0 | 0.00% | −726,800−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −495,153−100.0% | Sold out |