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 |
|---|---|---|---|---|---|
| Virtus Investment Advisers, Inc. | 75,746 | $24.9K | 0.01% | +1,850+2.5% | Added |
| Wells Fargo & Company | 76,264 | $25.1K | 0.00% | −285,657−78.9% | Reduced |
| Vanguard Global Advisers, LLC | 79,682 | $26.2K | 0.00% | +79,682 | New |
| Group One Trading, L.P. | 83,595 | $27.5K | 0.00% | +83,595 | New |
| Wealth Enhancement Advisory Services, LLC | 103,443 | $29.1K | 0.00% | +79,479+331.7% | Added |
| JPMorgan Chase & Co | 92,690 | $29.7K | 0.00% | −336,213−78.4% | Reduced |
| Sequoia Financial Advisors, LLC | 90,570 | $29.8K | 0.00% | +2,103+2.4% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 91,418 | $30.0K | 0.00% | −16,049−14.9% | Reduced |
| Sivia Capital Partners, LLC | 91,679 | $30.1K | 0.01% | +56,637+161.6% | Added |
| BNP Paribas Arbitrage, SA | 95,606 | $31.4K | 0.00% | +6,117+6.8% | Added |
| Quarry LP | 100,000 | $32.9K | 0.01% | +100,000 | New |
| Cerity Partners LLC | 106,519 | $35.0K | 0.00% | +74,605+233.8% | Added |
| BCV Asset Management Inc. | 106,500 | $35.0K | 0.00% | +106,500 | New |
| Victory Capital Management Inc | 107,141 | $35.2K | 0.00% | +1,587+1.5% | Added |
| Rockefeller Capital Management L.P. | 107,615 | $35.4K | 0.00% | +46,749+76.8% | Added |
| Commonwealth Equity Services, LLC | 109,978 | $36.1K | 0.00% | +31,222+39.6% | Added |
| Nine Masts Capital Ltd | 114,766 | $37.7K | 0.01% | +114,766 | New |
| HSBC Holdings PLC | 113,943 | $37.8K | 0.00% | +113,943 | New |
| Tudor Investment Corp Et Al | 115,237 | $37.9K | 0.00% | +65,237+130.5% | Added |
| Creative Planning | 125,627 | $41.3K | 0.00% | +80,016+175.4% | Added |
| SG Americas Securities, LLC | 128,568 | $42.0K | 0.00% | +54,439+73.4% | Added |
| Los Angeles Capital Management LLC | 131,216 | $43.1K | 0.00% | +131,216 | New |
| Nuveen, LLC | 132,894 | $43.7K | 0.00% | −175,628−56.9% | Reduced |
| Price T Rowe Associates Inc | 132,026 | $44.0K | 0.00% | +18,888+16.7% | Added |
| Susquehanna International Group, LLP | 135,773 | $44.6K | 0.00% | +47,318+53.5% | Added |
| Russell Investments Group, Ltd. | 145,272 | $47.7K | 0.00% | −25,799−15.1% | Reduced |
| Merit Financial Group, LLC | 154,441 | $50.7K | 0.00% | −737−0.5% | Reduced |
| Millennium Management LLC | 187,418 | $61.6K | 0.00% | −3,396,870−94.8% | Reduced |
| Mercer Global Advisors Inc | 189,328 | $62.2K | 0.00% | +165,345+689.4% | Added |
| Rhumbline Advisers | 216,396 | $71.2K | 0.00% | +1,527+0.7% | Added |
| RSM US Wealth Management LLC | 250,111 | $82.2K | 0.00% | +175,000+233.0% | Added |
| Virtu Financial LLC | 263,212 | $86.0K | 0.00% | +263,212 | New |
| ADAR1 Capital Management, LLC | 287,531 | $94.5K | 0.01% | +75,000+35.3% | Added |
| CWM, LLC | 319,995 | $105.1K | 0.00% | +286,038+842.4% | Added |
| Morgan Stanley | 367,378 | $120.7K | 0.00% | −551,510−60.0% | Reduced |
| LPL Financial LLC | 371,734 | $122.1K | 0.00% | +12,817+3.6% | Added |
| D. E. Shaw & Co., Inc. | 389,431 | $127.9K | 0.00% | +190,722+96.0% | Added |
| Ieq Capital, LLC | 393,739 | $129.3K | 0.00% | +382,528+3,412.1% | Added |
| Mariner, LLC | 418,404 | $137.4K | 0.00% | +353,954+549.2% | Added |
| Bank of New York Mellon Corp | 428,241 | $140.7K | 0.00% | −19,660−4.4% | Reduced |
| Invesco Ltd. | 464,968 | $152.7K | 0.00% | −13,941−2.9% | Reduced |
| Panagora Asset Management Inc | 469,946 | $154.4K | 0.00% | +322,650+219.0% | Added |
| Smith, Moore & Co. | 470,000 | $154.4K | 0.01% | +190,000+67.9% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 658,221 | $216.2K | 0.00% | +130,168+24.7% | Added |
| XTX Topco Ltd | 679,125 | $223.1K | 0.00% | +222,796+48.8% | Added |
| Ishara Investments LP | 820,000 | $269.4K | 0.27% | +820,000 | New |
| Hennion & Walsh Asset Management, Inc. | 828,719 | $272.2K | 0.01% | +175,742+26.9% | Added |
| Voya Investment Management LLC | 866,615 | $284.7K | 0.00% | +830,105+2,273.6% | Added |
| NEA Management Company, LLC | 1,000,000 | $328.5K | 0.02% | −17,093,034−94.5% | Reduced |
| Goldman Sachs Group Inc | 1,180,544 | $387.8K | 0.00% | −611,570−34.1% | Reduced |
| Renaissance Technologies LLC | 1,217,868 | $400.1K | 0.00% | +558,980+84.8% | Added |
| Deutsche Bank AG | 1,305,886 | $430.9K | 0.00% | +21,551+1.7% | Added |
| Vanguard Fiduciary Trust Co | 1,404,285 | $462.0K | 0.00% | +1,404,285 | New |
| Northern Trust Corp | 1,408,960 | $462.8K | 0.00% | −7,580−0.5% | Reduced |
| Charles Schwab Investment Management Inc | 1,510,076 | $496.1K | 0.00% | −175,702−10.4% | Reduced |
| MB Generational Wealth, LLC | 1,532,142 | $503.3K | 0.28% | −73,307−4.6% | Reduced |
| Mackenzie Financial Corp | 1,536,923 | $504.9K | 0.00% | +1,230,470+401.5% | Added |
| Rock Springs Capital Management LP | 1,609,492 | $528.7K | 0.03% | −1,657,468−50.7% | Reduced |
| Jacobs Levy Equity Management, Inc | 1,695,159 | $556.9K | 0.00% | −482,874−22.2% | Reduced |
| Ensign Peak Advisors, Inc | 1,702,125 | $559.1K | 0.00% | +1,702,125 | New |
| Alliancebernstein L.P. | 190,220 | $589.7K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 1,883,583 | $619.7K | 0.00% | +112,202+6.3% | Added |
| Alyeska Investment Group, L.P. | 2,051,442 | $673.9K | 0.00% | +1,142,355+125.7% | Added |
| Vanguard Portfolio Management LLC | 2,161,079 | $711.0K | 0.00% | +2,161,079 | New |
| Barclays PLC | 3,065,806 | $1.01M | 0.00% | +2,489,273+431.8% | Added |
| Bank of America Corp | 3,173,725 | $1.04M | 0.00% | +1,267,056+66.5% | Added |
| Gsa Capital Partners LLP | 3,254,233 | $1.07M | 0.07% | +3,202,373+6,175.0% | Added |
| Squarepoint Ops LLC | 3,398,757 | $1.12M | 0.00% | +3,177,166+1,433.8% | Added |
| CI Private Wealth, LLC | 3,985,383 | $1.31M | 0.00% | +139,498+3.6% | Added |
| State Street Corp | 4,388,109 | $1.44M | 0.00% | −4,922,860−52.9% | Reduced |
| Two Sigma Investments, LP | 4,780,851 | $1.57M | 0.00% | +1,383,741+40.7% | Added |
| Qube Research & Technologies Ltd | 4,917,763 | $1.62M | 0.00% | +4,377,196+809.7% | Added |
| Geode Capital Management, LLC | 4,939,691 | $1.62M | 0.00% | +66,977+1.4% | Added |
| HHLR Advisors, Ltd.SuperinvestorHHLR Advisors (Hillhouse) | 4,974,041 | $1.63M | 0.10% | 00.0% | Unchanged |
| 683 Capital Management, LLC | 5,000,000 | $1.64M | 0.15% | −190,800−3.7% | Reduced |
| Siren, L.L.C. | 5,208,968 | $1.71M | 0.05% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 5,277,904 | $1.73M | 0.00% | +861,001+19.5% | Added |
| Balyasny Asset Management LLC | 5,922,298 | $1.95M | 0.00% | +4,405,607+290.5% | Added |
| Samsara BioCapital, LLC | 7,222,559 | $2.37M | 0.23% | 00.0% | Unchanged |
| Octagon Capital Advisors LP | 7,750,000 | $2.55M | 0.28% | −6,165,371−44.3% | Reduced |
| ARCH Venture Management, LLC | 8,055,916 | $2.65M | 0.39% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 9,394,593 | $3.09M | 0.00% | +9,394,593 | New |
| AQR Capital Management LLC | 10,126,897 | $3.33M | 0.00% | +9,007,657+804.8% | Added |
| Kalehua Capital Management LLC | 10,236,293 | $3.36M | 2.38% | +10,236,293 | New |
| BlackRock, Inc. | 16,826,695 | $5.53M | 0.00% | −230,183−1.3% | Reduced |
| Palo Alto Investors LP | 0 | $0 | 0.00% | −4,471,592−100.0% | Sold out |
| Perceptive Advisors LLC | 0 | $0 | 0.00% | −3,139,669−100.0% | Sold out |
| Opaleye Management Inc. | 0 | $0 | 0.00% | −2,720,000−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −2,596,900−100.0% | Sold out |
| Silverarc Capital Management, LLC | 0 | $0 | 0.00% | −2,135,722−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −1,077,032−100.0% | Sold out |
| Monashee Investment Management LLC | 0 | $0 | 0.00% | −1,000,000−100.0% | Sold out |
| Integral Health Asset Management, LLC | 0 | $0 | 0.00% | −1,000,000−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −956,879−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −750,308−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −704,787−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −601,323−100.0% | Sold out |
| Platinum Investment Management Ltd | 0 | $0 | 0.00% | −561,951−100.0% | Sold out |
| Silverback Asset Management LLC | 0 | $0 | 0.00% | −500,000−100.0% | Sold out |
| Exome Asset Management LLC | 0 | $0 | 0.00% | −451,699−100.0% | Sold out |