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 |
|---|---|---|---|---|---|
| NEA Management Company, LLC | 18,093,034 | $47.6M | 2.61% | 00.0% | Unchanged |
| Octagon Capital Advisors LP | 17,050,000 | $44.8M | 7.00% | −1,300,000−7.1% | Reduced |
| BlackRock, Inc. | 13,846,054 | $36.4M | 0.00% | +1,703,458+14.0% | Added |
| Vanguard Group Inc | 12,009,773 | $31.6M | 0.00% | +598,981+5.2% | Added |
| ARCH Venture Management, LLC | 8,055,916 | $21.2M | 4.30% | 00.0% | Unchanged |
| Samsara BioCapital, LLC | 6,130,268 | $16.1M | 2.10% | 00.0% | Unchanged |
| Palo Alto Investors LP | 5,464,349 | $14.4M | 2.66% | −274,664−4.8% | Reduced |
| Siren, L.L.C. | 5,208,968 | $13.7M | 0.54% | 00.0% | Unchanged |
| 683 Capital Management, LLC | 5,059,200 | $13.3M | 1.21% | −1,280,800−20.2% | Reduced |
| Acadian Asset Management LLC | 5,012,969 | $13.2M | 0.02% | −2,133,053−29.8% | Reduced |
| HHLR Advisors, Ltd.SuperinvestorHHLR Advisors (Hillhouse) | 4,974,041 | $13.1M | 0.32% | 00.0% | Unchanged |
| Silverarc Capital Management, LLC | 4,779,082 | $12.6M | 1.82% | −367,700−7.1% | Reduced |
| Geode Capital Management, LLC | 4,689,531 | $12.3M | 0.00% | +134,451+3.0% | Added |
| FMR LLC | 4,085,346 | $10.7M | 0.00% | −3,229,979−44.2% | Reduced |
| State Street Corp | 3,883,667 | $10.2M | 0.00% | +1,402,261+56.5% | Added |
| Perceptive Advisors LLC | 3,812,797 | $10.0M | 0.29% | +3,812,797 | New |
| Millennium Management LLC | 3,619,329 | $9.52M | 0.01% | +3,123,081+629.3% | Added |
| Rock Springs Capital Management LP | 3,266,960 | $8.59M | 0.50% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 2,980,188 | $7.84M | 0.01% | +247,894+9.1% | Added |
| Bank of America Corp | 2,881,904 | $7.58M | 0.00% | +2,814,824+4,196.2% | Added |
| UBS Group AG | 2,770,046 | $7.29M | 0.00% | +2,457,304+785.7% | Added |
| Opaleye Management Inc. | 2,725,000 | $7.17M | 1.01% | −820,000−23.1% | Reduced |
| Two Sigma Investments, LP | 2,287,251 | $6.02M | 0.01% | +542,124+31.1% | Added |
| Citadel Advisors LLC | 2,284,216 | $6.01M | 0.00% | +1,516,655+197.6% | Added |
| Alyeska Investment Group, L.P. | 1,909,087 | $5.02M | 0.02% | −2,550,000−57.2% | Reduced |
| Two Sigma Advisers, LP | 1,870,100 | $4.92M | 0.01% | +197,900+11.8% | Added |
| Charles Schwab Investment Management Inc | 1,729,634 | $4.55M | 0.00% | +108,215+6.7% | Added |
| Northern Trust Corp | 1,495,403 | $3.93M | 0.00% | −24,723−1.6% | Reduced |
| MB Generational Wealth, LLC | 1,414,824 | $3.72M | 2.36% | +1,414,824 | New |
| Jacobs Levy Equity Management, Inc | 1,408,118 | $3.70M | 0.01% | +316,554+29.0% | Added |
| Monaco Asset Management SAM | 1,379,416 | $3.63M | 1.35% | −2,170,584−61.1% | Reduced |
| Colony Group, LLC | 1,325,198 | $3.49M | 0.01% | +175,198+15.2% | Added |
| Deutsche Bank AG | 1,278,921 | $3.36M | 0.00% | −982,534−43.4% | Reduced |
| Nuveen, LLC | 1,077,135 | $2.83M | 0.00% | +830,271+336.3% | Added |
| Jain Global LLC | 1,054,356 | $2.77M | 0.04% | +1,054,356 | New |
| Royal Bank of Canada | 1,001,606 | $2.63M | 0.00% | +919,407+1,118.5% | Added |
| Eversept Partners, LP | 925,233 | $2.43M | 0.19% | −770,529−45.4% | Reduced |
| Tang Capital Management LLC | 800,000 | $2.10M | 0.08% | +800,000 | New |
| Balyasny Asset Management LLC | 770,574 | $2.03M | 0.00% | +770,574 | New |
| Platinum Investment Management Ltd | 764,165 | $2.01M | 0.13% | −619,698−44.8% | Reduced |
| Adage Capital Partners GP, L.L.C. | 726,800 | $1.91M | 0.00% | +726,800 | New |
| Jane Street Group, LLC | 702,065 | $1.85M | 0.00% | +702,065 | New |
| Russell Investments Group, Ltd. | 685,049 | $1.80M | 0.00% | +685,049 | New |
| AQR Capital Management LLC | 646,615 | $1.70M | 0.00% | +646,615 | New |
| Wellington Management Group LLP | 641,715 | $1.69M | 0.00% | +641,715 | New |
| Arrowstreet Capital, Limited Partnership | 635,397 | $1.67M | 0.00% | −482,575−43.2% | Reduced |
| Morgan Stanley | 566,419 | $1.49M | 0.00% | −252,272−30.8% | Reduced |
| Walleye Capital LLC | 545,679 | $1.44M | 0.01% | +545,679 | New |
| Silverback Asset Management LLC | 500,000 | $1.31M | 0.17% | +150,000+42.9% | Added |
| Woodline Partners LP | 495,153 | $1.30M | 0.01% | 00.0% | Unchanged |
| Exome Asset Management LLC | 451,699 | $1.19M | 0.78% | −646,300−58.9% | Reduced |
| Bank of New York Mellon Corp | 448,211 | $1.18M | 0.00% | +61,503+15.9% | Added |
| Invesco Ltd. | 352,086 | $926.0K | 0.00% | +112,841+47.2% | Added |
| Bridgeway Capital Management, LLC | 335,900 | $883.4K | 0.02% | −150,000−30.9% | Reduced |
| Mackenzie Financial Corp | 309,050 | $812.8K | 0.00% | −244,014−44.1% | Reduced |
| Goldman Sachs Group Inc | 299,582 | $787.9K | 0.00% | +138,887+86.4% | Added |
| Smith, Moore & Co. | 280,000 | $736.4K | 0.06% | −20,000−6.7% | Reduced |
| EAM Investors, LLC | 278,422 | $732.3K | 0.08% | +278,422 | New |
| XTX Topco Ltd | 274,782 | $722.7K | 0.04% | +175,806+177.6% | Added |
| Barclays PLC | 271,706 | $714.6K | 0.00% | −67,086−19.8% | Reduced |
| D. E. Shaw & Co., Inc. | 248,818 | $654.4K | 0.00% | +192,010+338.0% | Added |
| Rhumbline Advisers | 225,060 | $591.9K | 0.00% | −5,989−2.6% | Reduced |
| ADAR1 Capital Management, LLC | 212,531 | $559.0K | 0.06% | −14,697−6.5% | Reduced |
| Qube Research & Technologies Ltd | 208,789 | $549.1K | 0.00% | −40,995−16.4% | Reduced |
| Stonepine Capital Management, LLC | 204,770 | $538.5K | 0.44% | +204,770 | New |
| JPMorgan Chase & Co | 194,369 | $511.2K | 0.00% | +103,922+114.9% | Added |
| Gsa Capital Partners LLP | 190,815 | $502.0K | 0.04% | −569,633−74.9% | Reduced |
| Cubist Systematic Strategies, LLC | 162,785 | $428.1K | 0.01% | +162,785 | New |
| LPL Financial LLC | 138,326 | $363.8K | 0.00% | +71,326+106.5% | Added |
| Birchview Capital, LP | 138,176 | $363.4K | 0.27% | 00.0% | Unchanged |
| Prelude Capital Management, LLC | 136,200 | $358.2K | 0.03% | −237,969−63.6% | Reduced |
| Merit Financial Group, LLC | 134,688 | $354.2K | 0.00% | +134,688 | New |
| Atom Investors LP | 132,552 | $348.6K | 0.03% | −597,805−81.9% | Reduced |
| Sequoia Financial Advisors, LLC | 117,500 | $309.0K | 0.00% | −1,000−0.8% | Reduced |
| Wells Fargo & Company | 116,667 | $306.8K | 0.00% | +18,510+18.9% | Added |
| Victory Capital Management Inc | 105,226 | $276.7K | 0.00% | −735−0.7% | Reduced |
| MetLife Investment Management | 101,513 | $267.0K | 0.00% | −14,300−12.3% | Reduced |
| Intech Investment Management LLC | 100,847 | $265.2K | 0.00% | +2,544+2.6% | Added |
| Price T Rowe Associates Inc | 100,658 | $265.0K | 0.00% | +5,367+5.6% | Added |
| Alps Advisors Inc | 99,155 | $260.8K | 0.00% | −23,489−19.2% | Reduced |
| Alliancebernstein L.P. | 98,680 | $259.5K | 0.00% | +72,260+273.5% | Added |
| BNP Paribas Arbitrage, SA | 96,403 | $253.5K | 0.00% | +79,286+463.2% | Added |
| HB Wealth Management, LLC | 94,748 | $249.2K | 0.00% | +94,748 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 87,274 | $229.5K | 0.00% | −16,673−16.0% | Reduced |
| RSM US Wealth Management LLC | 85,111 | $223.8K | 0.00% | +9,000+11.8% | Added |
| Quadrature Capital Ltd | 79,709 | $209.2K | 0.00% | −16,087−16.8% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 77,440 | $204.0K | 0.00% | +58,140+301.2% | Added |
| Group One Trading, L.P. | 74,531 | $196.0K | 0.01% | −158,639−68.0% | Reduced |
| Velan Capital Investment Management LP | 70,000 | $184.1K | 0.17% | −5,000−6.7% | Reduced |
| Graham Capital Management, L.P. | 67,367 | $177.2K | 0.01% | +20,473+43.7% | Added |
| Manufacturers Life Insurance Company, The | 65,379 | $171.9K | 0.00% | −6,682−9.3% | Reduced |
| SEI Investments Co | 61,186 | $160.9K | 0.00% | +61,186 | New |
| Omers Administration Corp | 59,100 | $155.4K | 0.00% | +59,100 | New |
| Police & Firemen's Retirement System of New Jersey | 51,314 | $135.0K | 0.00% | +8,399+19.6% | Added |
| EntryPoint Capital, LLC | 51,264 | $134.8K | 0.05% | +51,264 | New |
| Prudential Financial Inc | 50,715 | $133.4K | 0.00% | +300+0.6% | Added |
| Tudor Investment Corp Et Al | 50,103 | $131.8K | 0.00% | +3,639+7.8% | Added |
| Axq Capital, LP | 46,367 | $121.9K | 0.05% | +46,367 | New |
| New York State Common Retirement Fund | 43,600 | $114.7K | 0.00% | −33,400−43.4% | Reduced |
| Commonwealth Equity Services, LLC | 42,671 | $112.0K | 0.00% | +7,400+21.0% | Added |