Gossamer BioGOSS
13F holders, Q1 2026 (March 31)185holders −10
42new positions
53sold out
5famous investors
$0.33avg. 13F price*
At the end of Q1 2026, 185 institutions reported holding Gossamer Bio Inc. (GOSS) in their 13F filings, down 10 from Q4 2025. 42 opened new positions and 53 sold out. The largest holders were BlackRock, Inc. ($5.5M), Kalehua Capital Management LLC ($3.4M) and AQR Capital Management ($3.3M). 5 famous investors held it, including Cliff Asness (0.0% of AQR Capital Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio).
- Company
- Gossamer Bio Inc.
- CUSIP
- 38341P102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 42 | $4.7M |
| Exits | 53 | $72.9M |
All 13F filers, Q4 2025 → Q1 2026: 52,116,108 shares bought and 64,870,390 shares sold, net −12,754,282 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 185 holders
| BlackRock, Inc. | 0.00% | Reduce -1.4% | 16,826,695 | $5.5M |
| Kalehua Capital Management LLC | 2.38% | New | 10,236,293 | $3.4M |
| AQR Capital Management | 0.00% | Add +804.8% | 10,126,897 | $3.3M |
| Vanguard Capital Management LLC | 0.00% | — | 9,394,593 | $3.1M |
| ARCH Venture Management, LLC | 0.39% | No change | 8,055,916 | $2.6M |
| Octagon Capital Advisors LP | 0.28% | Reduce -44.3% | 7,750,000 | $2.5M |
| Samsara Biocapital, LLC | 0.23% | No change | 7,222,559 | $2.4M |
| Balyasny Asset Management L.P. | 0.00% | Add +290.5% | 5,922,298 | $1.9M |
| Acadian Asset Management LLC | 0.00% | Add +19.5% | 5,277,904 | $1.7M |
| Siren, L.L.C. | 0.05% | No change | 5,208,968 | $1.7M |
| 683 Capital Management, LLC | 0.16% | Reduce -3.7% | 5,000,000 | $1.6M |
| HHLR Advisors, LTD. | 0.10% | No change | 4,974,041 | $1.6M |
| Geode Capital Management, LLC | 0.00% | Add +1.4% | 4,939,691 | $1.6M |
| Qube Research & Technologies Ltd | 0.00% | Add +809.7% | 4,917,763 | $1.6M |
| Two Sigma Investments, LP | 0.00% | Add +40.7% | 4,780,851 | $1.6M |
| State Street Corp. | 0.00% | Reduce -52.9% | 4,388,109 | $1.4M |
| Corient Private Wealth LP | 0.00% | Add +3.6% | 3,985,383 | $1.3M |
| Squarepoint Ops LLC | 0.00% | Add +1433.8% | 3,398,757 | $1.1M |
| Gsa Capital Partners LLP | 0.07% | Add +6175.0% | 3,254,233 | $1.1M |
| Bank of America Corp. | 0.00% | Add +66.5% | 3,173,725 | $1.0M |
| Barclays PLC | 0.00% | Add +431.8% | 3,065,806 | $1.0M |
| Vanguard Portfolio Management LLC | 0.00% | — | 2,161,079 | $711K |
| Alyeska Investment Group, L.P. | 0.00% | Add +125.7% | 2,051,442 | $674K |
| UBS Group AG | 0.00% | Add +6.3% | 1,883,583 | $620K |
| Alliancebernstein L.P. | 0.00% | No change | 190,220 | $590K |
| Ensign Peak Advisors, Inc | 0.00% | New | 1,702,125 | $559K |
| Jacobs Levy Equity Management, Inc. | 0.00% | Reduce -22.2% | 1,695,159 | $557K |
| Rock Springs Capital Management LP | 0.03% | Reduce -50.7% | 1,609,492 | $529K |
| Mackenzie Financial Corp. | 0.00% | Add +401.5% | 1,536,923 | $505K |
| MB Generational Wealth, LLC | 0.28% | Reduce -4.6% | 1,532,142 | $503K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -10.4% | 1,510,076 | $496K |
| Northern Trust Corp. | 0.00% | Reduce -0.5% | 1,408,960 | $463K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 1,404,285 | $462K |
| Deutsche Bank AG | 0.00% | Add +1.7% | 1,305,886 | $431K |
| Renaissance Technologies | 0.00% | Add +84.8% | 1,217,868 | $400K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -34.1% | 1,180,544 | $388K |
| NEA Management Company, LLC | 0.02% | Reduce -94.5% | 1,000,000 | $329K |
| Voya Investment Management LLC | 0.00% | Add +2273.6% | 866,615 | $285K |
| Hennion & Walsh Asset Management, Inc. | 0.01% | Add +26.9% | 828,719 | $272K |
| Ishara Investments LP | 0.27% | New | 820,000 | $269K |
| XTX Topco Ltd | 0.00% | Add +48.8% | 679,125 | $223K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Add +24.6% | 658,221 | $216K |
| Smith, Moore & Co. | 0.01% | Add +67.9% | 470,000 | $154K |
| Panagora Asset Management Inc. | 0.00% | Add +219.1% | 469,946 | $154K |
| Invesco Ltd. | 0.00% | Reduce -2.9% | 464,968 | $153K |
| Bank of New York Mellon Corp | 0.00% | Reduce -4.4% | 428,241 | $141K |
| Mariner, LLC | 0.00% | Add +549.2% | 418,404 | $137K |
| Ieq Capital, LLC | 0.00% | Add +3412.1% | 393,739 | $129K |
| D. E. Shaw & Co. | 0.00% | Add +96.0% | 389,431 | $128K |
| LPL Financial LLC | 0.00% | Add +3.6% | 371,734 | $122K |
| Morgan Stanley | 0.00% | Reduce -60.0% | 367,378 | $121K |
| Cwm, LLC | 0.00% | Add +842.4% | 319,995 | $105K |
| ADAR1 Capital Management, LLC | 0.01% | Add +35.3% | 287,531 | $94K |
| Virtu Financial LLC | 0.00% | New | 263,212 | $86K |
| Choreo, LLC | 0.00% | Add +233.0% | 250,111 | $82K |
| Rhumbline Advisers | 0.00% | Add +0.7% | 216,396 | $71K |
| Mercer Global Advisors Inc. | 0.00% | Add +689.4% | 189,328 | $62K |
| Millennium Management | 0.00% | Reduce -94.8% | 187,418 | $62K |
| Merit Financial Group, LLC | 0.00% | Reduce -0.5% | 154,441 | $51K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -15.1% | 145,272 | $48K |
| Susquehanna International Group, LLP | 0.00% | Add +53.5% | 135,773 | $45K |
| T. Rowe Price Associates Inc. | 0.00% | Add +16.7% | 132,026 | $44K |
| Nuveen, LLC | 0.00% | Reduce -56.9% | 132,894 | $44K |
| Los Angeles Capital Management LLC | 0.00% | New | 131,216 | $43K |
| SG Americas Securities, LLC | 0.00% | Add +73.4% | 128,568 | $42K |
| Creative Planning | 0.00% | Add +175.4% | 125,627 | $41K |
| Tudor Investment Corporation | 0.00% | Add +130.5% | 115,237 | $38K |
| HSBC Holdings PLC | 0.00% | New | 113,943 | $38K |
| NINE MASTS CAPITAL Ltd | 0.01% | New | 114,766 | $38K |
| Commonwealth Equity Services, LLC | 0.00% | Add +39.6% | 109,978 | $36K |
| Rockefeller Capital Management L.P. | 0.00% | Add +76.8% | 107,615 | $35K |
| Victory Capital Management Inc. | 0.00% | Add +1.5% | 107,141 | $35K |
| BCV Asset Management Inc. | 0.00% | New | 106,500 | $35K |
| Cerity Partners LLC | 0.00% | Add +233.8% | 106,519 | $35K |
| Quarry LP | 0.01% | New | 100,000 | $33K |
| BNP Paribas Financial Markets | 0.00% | Add +6.8% | 95,606 | $31K |
| Sivia Capital Partners, LLC | 0.01% | Add +161.6% | 91,679 | $30K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -14.9% | 91,418 | $30K |
| Sequoia Financial Advisors, LLC | 0.00% | Add +2.4% | 90,570 | $30K |
| JPMorgan Chase & Co. | 0.00% | Reduce -78.4% | 92,690 | $30K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +331.7% | 103,443 | $29K |
| Group One Trading LLC | 0.00% | New | 83,595 | $27K |
| Vanguard Global Advisers, LLC | 0.00% | — | 79,682 | $26K |
| Wells Fargo & Company | 0.00% | Reduce -78.9% | 76,264 | $25K |
| Virtus Investment Advisers, LLC | 0.01% | Add +2.5% | 75,746 | $25K |
| Chicago Partners Investment Group LLC | 0.00% | New | 62,489 | $24K |
| Focus Partners Wealth | 0.00% | New | 73,013 | $24K |
| Caption Management, LLC | 0.00% | Reduce -5.4% | 71,282 | $23K |
| Velan Capital Investment Management LP | 0.01% | No change | 70,000 | $23K |
| Caprock Group, LLC | 0.00% | Reduce -12.5% | 70,000 | $23K |
| Waddell & Associates, LLC | 0.00% | New | 67,552 | $22K |
| HighTower Advisors, LLC | 0.00% | Reduce -1.3% | 65,630 | $22K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -0.9% | 57,923 | $19K |
| Captrust Financial Advisors | 0.00% | New | 57,504 | $19K |
| Prudential Financial Inc. | 0.00% | Add +48.7% | 55,925 | $18K |
| Intech Investment Management LLC | 0.00% | Reduce -36.9% | 54,002 | $18K |
| AlphaCore Capital LLC | 0.00% | Add +101.0% | 53,011 | $17K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 51,314 | $17K |
| New York State Common Retirement Fund | 0.00% | No change | 43,600 | $14K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Reduce -44.4% | 42,800 | $14K |
"% of holder's portfolio" is GOSS's weight in each manager's 13F, not the share of Gossamer Bio Inc. the manager owns.