Gossamer BioGOSS
13F holders, Q4 2025 (December 31)195holders +31
46new positions
14sold out
6famous investors
$3.10avg. 13F price*
At the end of Q4 2025, 195 institutions reported holding Gossamer Bio Inc. (GOSS) in their 13F filings, up 31 from Q3 2025. 46 opened new positions and 14 sold out. The largest holders were NEA Management Company, LLC ($56.1M), BlackRock, Inc. ($52.9M) and Octagon Capital Advisors LP ($43.1M). 6 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Gossamer Bio Inc.
- CUSIP
- 38341P102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 46 | $17.0M |
| Exits | 14 | $12.4M |
All 13F filers, Q3 2025 → Q4 2025: 30,238,561 shares bought and 25,237,515 shares sold, net +5,001,046 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 195 holders
| NEA Management Company, LLC | 2.86% | No change | 18,093,034 | $56.1M |
| BlackRock, Inc. | 0.00% | Add +23.2% | 17,056,878 | $52.9M |
| Octagon Capital Advisors LP | 5.40% | Reduce -18.4% | 13,915,371 | $43.1M |
| Vanguard Group Inc. | 0.00% | Add +7.2% | 12,873,209 | $39.9M |
| State Street Corp. | 0.00% | Add +139.8% | 9,310,969 | $28.9M |
| ARCH Venture Management, LLC | 3.83% | No change | 8,055,916 | $25.0M |
| Samsara Biocapital, LLC | 2.31% | Add +17.8% | 7,222,559 | $22.4M |
| Siren, L.L.C. | 0.48% | No change | 5,208,968 | $16.1M |
| 683 Capital Management, LLC | 1.41% | Add +2.6% | 5,190,800 | $16.1M |
| HHLR Advisors, LTD. | 0.50% | No change | 4,974,041 | $15.4M |
| Geode Capital Management, LLC | 0.00% | Add +3.9% | 4,872,714 | $15.1M |
| Palo Alto Investors LP | 1.93% | Reduce -18.2% | 4,471,592 | $13.9M |
| Acadian Asset Management LLC | 0.02% | Reduce -11.9% | 4,416,903 | $13.7M |
| FMR LLC | 0.00% | Add +3.7% | 4,237,590 | $13.1M |
| Corient Private Wealth LP | 0.02% | Add +19123.7% | 3,845,885 | $11.9M |
| Millennium Management | 0.01% | Reduce -1.0% | 3,584,288 | $11.1M |
| Two Sigma Investments, LP | 0.02% | Add +48.5% | 3,397,110 | $10.5M |
| Rock Springs Capital Management LP | 0.52% | No change | 3,266,960 | $10.1M |
| Perceptive Advisors LLC | 0.18% | Reduce -17.6% | 3,139,669 | $9.7M |
| Opaleye Management Inc. | 1.11% | Reduce -0.2% | 2,720,000 | $8.4M |
| Two Sigma Advisers, LP | 0.02% | Add +38.9% | 2,596,900 | $8.1M |
| Jacobs Levy Equity Management, Inc. | 0.03% | Add +54.7% | 2,178,033 | $6.8M |
| Silverarc Capital Management, LLC | 0.96% | Reduce -55.3% | 2,135,722 | $6.6M |
| Bank of America Corp. | 0.00% | Reduce -33.8% | 1,906,669 | $5.9M |
| Goldman Sachs Group Inc. | 0.00% | Add +498.2% | 1,792,114 | $5.6M |
| UBS Group AG | 0.00% | Reduce -36.0% | 1,771,381 | $5.5M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -2.5% | 1,685,778 | $5.2M |
| MB Generational Wealth, LLC | 2.63% | Add +13.5% | 1,605,449 | $5.0M |
| Balyasny Asset Management L.P. | 0.01% | Add +96.8% | 1,516,691 | $4.7M |
| Northern Trust Corp. | 0.00% | Reduce -5.3% | 1,416,540 | $4.4M |
| Deutsche Bank AG | 0.00% | Add +0.4% | 1,284,335 | $4.0M |
| AQR Capital Management | 0.00% | Add +73.1% | 1,119,240 | $3.5M |
| Walleye Capital LLC | 0.02% | Add +97.4% | 1,077,032 | $3.3M |
| Monashee Investment Management LLC | 1.83% | New | 1,000,000 | $3.1M |
| Integral Health Asset Management, LLC | 0.16% | New | 1,000,000 | $3.1M |
| HRT Financial LP | 0.01% | New | 956,879 | $3.0M |
| Morgan Stanley | 0.00% | Add +62.2% | 918,888 | $2.8M |
| Alyeska Investment Group, L.P. | 0.01% | Reduce -52.4% | 909,087 | $2.8M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Add +18.1% | 750,308 | $2.3M |
| Citadel Advisors | 0.00% | Reduce -69.2% | 704,787 | $2.2M |
| Renaissance Technologies | 0.00% | Reduce -77.9% | 658,888 | $2.0M |
| Hennion & Walsh Asset Management, Inc. | 0.07% | New | 652,977 | $2.0M |
| Wellington Management Group LLP | 0.00% | Reduce -6.3% | 601,323 | $1.9M |
| Barclays PLC | 0.00% | Add +112.2% | 576,533 | $1.8M |
| Platinum Investment Management Ltd. | 0.40% | Reduce -26.5% | 561,951 | $1.7M |
| Qube Research & Technologies Ltd | 0.00% | Add +158.9% | 540,567 | $1.7M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Add +1975.0% | 528,053 | $1.6M |
| Silverback Asset Management LLC | 4.28% | No change | 500,000 | $1.6M |
| Invesco Ltd. | 0.00% | Add +36.0% | 478,909 | $1.5M |
| XTX Topco Ltd | 0.04% | Add +66.1% | 456,329 | $1.4M |
| Exome Asset Management LLC | 0.69% | No change | 451,699 | $1.4M |
| Bank of New York Mellon Corp | 0.00% | Reduce -0.1% | 447,901 | $1.4M |
| JPMorgan Chase & Co. | 0.00% | Add +120.7% | 428,903 | $1.3M |
| Wells Fargo & Company | 0.00% | Add +210.2% | 361,921 | $1.1M |
| LPL Financial LLC | 0.00% | Add +159.5% | 358,917 | $1.1M |
| Algert Global LLC | 0.02% | New | 332,336 | $1.0M |
| Rafferty Asset Management, LLC | 0.00% | New | 312,804 | $970K |
| Monaco Asset Management SAM | 0.29% | Reduce -77.6% | 309,211 | $959K |
| Nuveen, LLC | 0.00% | Reduce -71.4% | 308,522 | $956K |
| Mackenzie Financial Corp. | 0.00% | Reduce -0.8% | 306,453 | $954K |
| Smith, Moore & Co. | 0.07% | No change | 280,000 | $868K |
| Informed Momentum Co LLC | 0.10% | No change | 278,422 | $863K |
| Jain Global LLC | 0.01% | Reduce -73.6% | 278,189 | $862K |
| Sei Investments Co. | 0.00% | Add +274.1% | 228,896 | $710K |
| Squarepoint Ops LLC | 0.00% | New | 221,591 | $687K |
| Rhumbline Advisers | 0.00% | Reduce -4.5% | 214,869 | $666K |
| ADAR1 Capital Management, LLC | 0.05% | No change | 212,531 | $659K |
| Atom Investors LP | 0.05% | Add +55.1% | 205,639 | $637K |
| Stonepine Capital Management, LLC | 0.50% | No change | 204,770 | $635K |
| D. E. Shaw & Co. | 0.00% | Reduce -20.1% | 198,709 | $616K |
| Alliancebernstein L.P. | 0.00% | Add +92.8% | 190,220 | $590K |
| Bridgeway Capital Management, LLC | 0.01% | Reduce -47.6% | 176,000 | $546K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -75.0% | 171,071 | $530K |
| Jane Street Group, LLC | 0.00% | Reduce -77.8% | 155,591 | $482K |
| Merit Financial Group, LLC | 0.00% | Add +15.2% | 155,178 | $481K |
| Panagora Asset Management Inc. | 0.00% | Add +392.6% | 147,296 | $457K |
| Birchview Capital, LP | 0.25% | No change | 138,176 | $428K |
| Prelude Capital Management, LLC | 0.03% | No change | 136,200 | $422K |
| Brevan Howard Capital Management LP | 0.01% | Add +803.3% | 127,299 | $395K |
| Profund Advisors LLC | 0.01% | New | 116,503 | $361K |
| T. Rowe Price Associates Inc. | 0.00% | Add +12.4% | 113,138 | $351K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | Add +489.1% | 111,350 | $345K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +23.1% | 107,467 | $334K |
| Victory Capital Management Inc. | 0.00% | Add +0.3% | 105,554 | $327K |
| EntryPoint Capital, LLC | 0.13% | Add +105.0% | 105,085 | $326K |
| HB Wealth Management, LLC | 0.00% | Add +1.2% | 95,924 | $297K |
| Lighthouse Investment Partners, LLC | 0.01% | New | 92,500 | $287K |
| BNP Paribas Financial Markets | 0.00% | Reduce -7.2% | 89,489 | $277K |
| Sequoia Financial Advisors, LLC | 0.00% | Reduce -24.7% | 88,467 | $274K |
| Susquehanna International Group, LLP | 0.00% | New | 88,455 | $274K |
| MetLife Investment Management, LLC | 0.00% | Reduce -15.6% | 85,645 | $266K |
| Intech Investment Management LLC | 0.00% | Reduce -15.1% | 85,582 | $265K |
| VARCOV Co. | 0.10% | — | 83,868 | $260K |
| Caprock Group, LLC | 0.01% | New | 80,000 | $248K |
| Commonwealth Equity Services, LLC | 0.00% | Add +84.6% | 78,756 | $244K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Reduce -0.7% | 76,940 | $239K |
| Choreo, LLC | 0.00% | Reduce -11.8% | 75,111 | $234K |
| Caption Management, LLC | 0.01% | New | 75,375 | $234K |
| SG Americas Securities, LLC | 0.00% | Add +249.8% | 74,129 | $230K |
| Virtus Investment Advisers, LLC | 0.06% | New | 73,896 | $229K |
"% of holder's portfolio" is GOSS's weight in each manager's 13F, not the share of Gossamer Bio Inc. the manager owns.