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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 16,826,695 | $5.53M | 0.00% | −230,183−1.3% | Reduced |
| Kalehua Capital Management LLC | 10,236,293 | $3.36M | 2.38% | +10,236,293 | New |
| AQR Capital Management LLC | 10,126,897 | $3.33M | 0.00% | +9,007,657+804.8% | Added |
| Vanguard Capital Management LLC | 9,394,593 | $3.09M | 0.00% | +9,394,593 | New |
| ARCH Venture Management, LLC | 8,055,916 | $2.65M | 0.39% | 00.0% | Unchanged |
| Octagon Capital Advisors LP | 7,750,000 | $2.55M | 0.28% | −6,165,371−44.3% | Reduced |
| Samsara BioCapital, LLC | 7,222,559 | $2.37M | 0.23% | 00.0% | Unchanged |
| Balyasny Asset Management LLC | 5,922,298 | $1.95M | 0.00% | +4,405,607+290.5% | Added |
| Acadian Asset Management LLC | 5,277,904 | $1.73M | 0.00% | +861,001+19.5% | Added |
| Siren, L.L.C. | 5,208,968 | $1.71M | 0.05% | 00.0% | Unchanged |
| 683 Capital Management, LLC | 5,000,000 | $1.64M | 0.15% | −190,800−3.7% | Reduced |
| HHLR Advisors, Ltd.SuperinvestorHHLR Advisors (Hillhouse) | 4,974,041 | $1.63M | 0.10% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 4,939,691 | $1.62M | 0.00% | +66,977+1.4% | Added |
| Qube Research & Technologies Ltd | 4,917,763 | $1.62M | 0.00% | +4,377,196+809.7% | Added |
| Two Sigma Investments, LP | 4,780,851 | $1.57M | 0.00% | +1,383,741+40.7% | Added |
| State Street Corp | 4,388,109 | $1.44M | 0.00% | −4,922,860−52.9% | Reduced |
| CI Private Wealth, LLC | 3,985,383 | $1.31M | 0.00% | +139,498+3.6% | Added |
| Squarepoint Ops LLC | 3,398,757 | $1.12M | 0.00% | +3,177,166+1,433.8% | Added |
| Gsa Capital Partners LLP | 3,254,233 | $1.07M | 0.07% | +3,202,373+6,175.0% | Added |
| Bank of America Corp | 3,173,725 | $1.04M | 0.00% | +1,267,056+66.5% | Added |
| Barclays PLC | 3,065,806 | $1.01M | 0.00% | +2,489,273+431.8% | Added |
| Vanguard Portfolio Management LLC | 2,161,079 | $711.0K | 0.00% | +2,161,079 | New |
| Alyeska Investment Group, L.P. | 2,051,442 | $673.9K | 0.00% | +1,142,355+125.7% | Added |
| UBS Group AG | 1,883,583 | $619.7K | 0.00% | +112,202+6.3% | Added |
| Alliancebernstein L.P. | 190,220 | $589.7K | 0.00% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 1,702,125 | $559.1K | 0.00% | +1,702,125 | New |
| Jacobs Levy Equity Management, Inc | 1,695,159 | $556.9K | 0.00% | −482,874−22.2% | Reduced |
| Rock Springs Capital Management LP | 1,609,492 | $528.7K | 0.03% | −1,657,468−50.7% | Reduced |
| Mackenzie Financial Corp | 1,536,923 | $504.9K | 0.00% | +1,230,470+401.5% | Added |
| MB Generational Wealth, LLC | 1,532,142 | $503.3K | 0.28% | −73,307−4.6% | Reduced |
| Charles Schwab Investment Management Inc | 1,510,076 | $496.1K | 0.00% | −175,702−10.4% | Reduced |
| Northern Trust Corp | 1,408,960 | $462.8K | 0.00% | −7,580−0.5% | Reduced |
| Vanguard Fiduciary Trust Co | 1,404,285 | $462.0K | 0.00% | +1,404,285 | New |
| Deutsche Bank AG | 1,305,886 | $430.9K | 0.00% | +21,551+1.7% | Added |
| Renaissance Technologies LLC | 1,217,868 | $400.1K | 0.00% | +558,980+84.8% | Added |
| Goldman Sachs Group Inc | 1,180,544 | $387.8K | 0.00% | −611,570−34.1% | Reduced |
| NEA Management Company, LLC | 1,000,000 | $328.5K | 0.02% | −17,093,034−94.5% | Reduced |
| Voya Investment Management LLC | 866,615 | $284.7K | 0.00% | +830,105+2,273.6% | Added |
| Hennion & Walsh Asset Management, Inc. | 828,719 | $272.2K | 0.01% | +175,742+26.9% | Added |
| Ishara Investments LP | 820,000 | $269.4K | 0.27% | +820,000 | New |
| XTX Topco Ltd | 679,125 | $223.1K | 0.00% | +222,796+48.8% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 658,221 | $216.2K | 0.00% | +130,168+24.7% | Added |
| Smith, Moore & Co. | 470,000 | $154.4K | 0.01% | +190,000+67.9% | Added |
| Panagora Asset Management Inc | 469,946 | $154.4K | 0.00% | +322,650+219.0% | Added |
| Invesco Ltd. | 464,968 | $152.7K | 0.00% | −13,941−2.9% | Reduced |
| Bank of New York Mellon Corp | 428,241 | $140.7K | 0.00% | −19,660−4.4% | Reduced |
| Mariner, LLC | 418,404 | $137.4K | 0.00% | +353,954+549.2% | Added |
| Ieq Capital, LLC | 393,739 | $129.3K | 0.00% | +382,528+3,412.1% | Added |
| D. E. Shaw & Co., Inc. | 389,431 | $127.9K | 0.00% | +190,722+96.0% | Added |
| LPL Financial LLC | 371,734 | $122.1K | 0.00% | +12,817+3.6% | Added |
| Morgan Stanley | 367,378 | $120.7K | 0.00% | −551,510−60.0% | Reduced |
| CWM, LLC | 319,995 | $105.1K | 0.00% | +286,038+842.4% | Added |
| ADAR1 Capital Management, LLC | 287,531 | $94.5K | 0.01% | +75,000+35.3% | Added |
| Virtu Financial LLC | 263,212 | $86.0K | 0.00% | +263,212 | New |
| RSM US Wealth Management LLC | 250,111 | $82.2K | 0.00% | +175,000+233.0% | Added |
| Rhumbline Advisers | 216,396 | $71.2K | 0.00% | +1,527+0.7% | Added |
| Mercer Global Advisors Inc | 189,328 | $62.2K | 0.00% | +165,345+689.4% | Added |
| Millennium Management LLC | 187,418 | $61.6K | 0.00% | −3,396,870−94.8% | Reduced |
| Merit Financial Group, LLC | 154,441 | $50.7K | 0.00% | −737−0.5% | Reduced |
| Russell Investments Group, Ltd. | 145,272 | $47.7K | 0.00% | −25,799−15.1% | Reduced |
| Susquehanna International Group, LLP | 135,773 | $44.6K | 0.00% | +47,318+53.5% | Added |
| Price T Rowe Associates Inc | 132,026 | $44.0K | 0.00% | +18,888+16.7% | Added |
| Nuveen, LLC | 132,894 | $43.7K | 0.00% | −175,628−56.9% | Reduced |
| Los Angeles Capital Management LLC | 131,216 | $43.1K | 0.00% | +131,216 | New |
| SG Americas Securities, LLC | 128,568 | $42.0K | 0.00% | +54,439+73.4% | Added |
| Creative Planning | 125,627 | $41.3K | 0.00% | +80,016+175.4% | Added |
| Tudor Investment Corp Et Al | 115,237 | $37.9K | 0.00% | +65,237+130.5% | Added |
| HSBC Holdings PLC | 113,943 | $37.8K | 0.00% | +113,943 | New |
| Nine Masts Capital Ltd | 114,766 | $37.7K | 0.01% | +114,766 | New |
| Commonwealth Equity Services, LLC | 109,978 | $36.1K | 0.00% | +31,222+39.6% | Added |
| Rockefeller Capital Management L.P. | 107,615 | $35.4K | 0.00% | +46,749+76.8% | Added |
| Victory Capital Management Inc | 107,141 | $35.2K | 0.00% | +1,587+1.5% | Added |
| BCV Asset Management Inc. | 106,500 | $35.0K | 0.00% | +106,500 | New |
| Cerity Partners LLC | 106,519 | $35.0K | 0.00% | +74,605+233.8% | Added |
| Quarry LP | 100,000 | $32.9K | 0.01% | +100,000 | New |
| BNP Paribas Arbitrage, SA | 95,606 | $31.4K | 0.00% | +6,117+6.8% | Added |
| Sivia Capital Partners, LLC | 91,679 | $30.1K | 0.01% | +56,637+161.6% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 91,418 | $30.0K | 0.00% | −16,049−14.9% | Reduced |
| Sequoia Financial Advisors, LLC | 90,570 | $29.8K | 0.00% | +2,103+2.4% | Added |
| JPMorgan Chase & Co | 92,690 | $29.7K | 0.00% | −336,213−78.4% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 103,443 | $29.1K | 0.00% | +79,479+331.7% | Added |
| Group One Trading, L.P. | 83,595 | $27.5K | 0.00% | +83,595 | New |
| Vanguard Global Advisers, LLC | 79,682 | $26.2K | 0.00% | +79,682 | New |
| Wells Fargo & Company | 76,264 | $25.1K | 0.00% | −285,657−78.9% | Reduced |
| Virtus Investment Advisers, Inc. | 75,746 | $24.9K | 0.01% | +1,850+2.5% | Added |
| Chicago Partners Investment Group LLC | 62,489 | $24.4K | 0.00% | +62,489 | New |
| Colony Group, LLC | 73,013 | $24.0K | 0.00% | +73,013 | New |
| Caption Management, LLC | 71,282 | $23.4K | 0.00% | −4,093−5.4% | Reduced |
| CAPROCK Group, Inc. | 70,000 | $23.0K | 0.00% | −10,000−12.5% | Reduced |
| Velan Capital Investment Management LP | 70,000 | $23.0K | 0.01% | 00.0% | Unchanged |
| Waddell & Associates, LLC | 67,552 | $22.2K | 0.00% | +67,552 | New |
| HighTower Advisors, LLC | 65,630 | $21.6K | 0.00% | −864−1.3% | Reduced |
| Manufacturers Life Insurance Company, The | 57,923 | $19.0K | 0.00% | −518−0.9% | Reduced |
| Captrust Financial Advisors | 57,504 | $18.9K | 0.00% | +57,504 | New |
| Prudential Financial Inc | 55,925 | $18.4K | 0.00% | +18,310+48.7% | Added |
| Intech Investment Management LLC | 54,002 | $17.7K | 0.00% | −31,580−36.9% | Reduced |
| AlphaCore Capital LLC | 53,011 | $17.4K | 0.00% | +26,634+101.0% | Added |
| Police & Firemen's Retirement System of New Jersey | 51,314 | $16.9K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 43,600 | $14.3K | 0.00% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 42,800 | $14.0K | 0.00% | −34,140−44.4% | Reduced |