Gossamer BioGOSS
13F holders, Q1 2025 (March 31)118holders +13
23new positions
9sold out
4famous investors
$1.10avg. 13F price*
At the end of Q1 2025, 118 institutions reported holding Gossamer Bio Inc. (GOSS) in their 13F filings, up 13 from Q4 2024. 23 opened new positions and 9 sold out. The largest holders were Octagon Capital Advisors LP ($20.2M), NEA Management Company, LLC ($19.9M) and Vanguard Group Inc. ($11.1M). 4 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 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 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 23 | $4.7M |
| Exits | 9 | $296K |
All 13F filers, Q4 2024 → Q1 2025: 12,146,419 shares bought and 13,743,189 shares sold, net −1,596,770 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 118 holders
| Octagon Capital Advisors LP | 4.39% | No change | 18,350,000 | $20.2M |
| NEA Management Company, LLC | 1.53% | No change | 18,093,034 | $19.9M |
| Vanguard Group Inc. | 0.00% | Add +0.5% | 10,083,881 | $11.1M |
| ARCH Venture Management, LLC | 4.26% | No change | 8,055,916 | $8.8M |
| FMR LLC | 0.00% | Reduce -4.3% | 7,592,980 | $8.4M |
| Acadian Asset Management LLC | 0.02% | Add +24.6% | 6,358,113 | $7.0M |
| Silverarc Capital Management, LLC | 1.45% | Add +2.4% | 6,320,684 | $7.0M |
| Palo Alto Investors LP | 1.31% | Reduce 0.0% | 6,276,893 | $6.9M |
| Samsara Biocapital, LLC | 1.20% | No change | 6,130,268 | $6.7M |
| 683 Capital Management, LLC | 0.75% | Reduce -12.5% | 6,100,000 | $6.7M |
| Siren, L.L.C. | 0.32% | No change | 5,208,968 | $5.7M |
| HHLR Advisors, LTD. | 0.15% | No change | 4,974,041 | $5.5M |
| Monaco Asset Management SAM | 2.70% | Reduce -9.7% | 4,849,134 | $5.3M |
| Opaleye Management Inc. | 1.08% | Reduce -4.5% | 4,287,415 | $4.7M |
| Alyeska Investment Group, L.P. | 0.02% | Reduce -52.7% | 4,163,734 | $4.6M |
| Eversept Partners, LP | 0.49% | Reduce -21.7% | 3,896,841 | $4.3M |
| Corient Private Wealth LP | 0.01% | No change | 3,391,483 | $3.7M |
| Rock Springs Capital Management LP | 0.21% | No change | 3,266,960 | $3.6M |
| BlackRock, Inc. | 0.00% | Add +1.4% | 3,072,773 | $3.4M |
| Susquehanna International Group, LLP | 0.01% | Add +404.6% | 2,916,109 | $3.2M |
| Millennium Management | 0.00% | Reduce -25.3% | 2,678,036 | $2.9M |
| Geode Capital Management, LLC | 0.00% | Add +1.0% | 2,272,448 | $2.5M |
| Deutsche Bank AG | 0.00% | No change | 2,112,745 | $2.3M |
| Platinum Investment Management Ltd. | 0.11% | Reduce -45.6% | 1,731,355 | $1.9M |
| Marshall Wace, LLP | 0.00% | Reduce -32.4% | 1,713,655 | $1.9M |
| Renaissance Technologies | 0.00% | Reduce -8.4% | 1,569,155 | $1.7M |
| Laurion Capital Management LP | 0.14% | Add +4.3% | 1,551,428 | $1.7M |
| Two Sigma Advisers, LP | 0.00% | Add +11.2% | 1,287,200 | $1.4M |
| Two Sigma Investments, LP | 0.00% | Add +43.1% | 1,275,412 | $1.4M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -8.3% | 1,138,947 | $1.3M |
| Exome Asset Management LLC | 1.08% | No change | 1,097,999 | $1.2M |
| Goldman Sachs Group Inc. | 0.00% | Add +720.2% | 939,603 | $1.0M |
| DAFNA Capital Management LLC | 0.29% | Reduce -35.6% | 907,854 | $999K |
| Qube Research & Technologies Ltd | 0.00% | Add +28.7% | 895,524 | $985K |
| State Street Corp. | 0.00% | Add +14.9% | 882,676 | $971K |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 803,815 | $884K |
| Woodline Partners LP | 0.01% | No change | 728,459 | $801K |
| Atom Investors LP | 0.10% | New | 701,975 | $772K |
| Focus Partners Wealth | 0.00% | New | 700,000 | $770K |
| Gsa Capital Partners LLP | 0.07% | Reduce -19.4% | 695,553 | $765K |
| Jane Street Group, LLC | 0.00% | Add +5250.1% | 683,423 | $752K |
| Allostery Investments LP | 0.97% | No change | 613,028 | $674K |
| Bridgeway Capital Management, LLC | 0.02% | Add +3.7% | 560,900 | $617K |
| Highbridge Capital Management LLC | 0.09% | Reduce -16.7% | 497,694 | $547K |
| Morgan Stanley | 0.00% | Add +209.3% | 459,533 | $505K |
| Opti Capital Management, LP | 11.81% | Add +127.2% | 414,152 | $456K |
| Northern Trust Corp. | 0.00% | Reduce -0.3% | 410,116 | $451K |
| HRT Financial LP | 0.00% | New | 389,452 | $428K |
| Prelude Capital Management, LLC | 0.04% | Reduce -9.2% | 376,802 | $414K |
| Mackenzie Financial Corp. | 0.00% | Add +17.6% | 352,473 | $388K |
| OMERS ADMINISTRATION Corp | 0.00% | New | 351,600 | $387K |
| Smith, Moore & Co. | 0.03% | No change | 300,000 | $330K |
| Balyasny Asset Management L.P. | 0.00% | New | 289,265 | $318K |
| Jacobs Levy Equity Management, Inc. | 0.00% | Reduce -81.6% | 282,264 | $310K |
| Diadema Partners LP | 0.24% | Add +23.7% | 269,589 | $297K |
| Victory Capital Management Inc. | 0.00% | Reduce -0.5% | 264,085 | $290K |
| Barclays PLC | 0.00% | Add +245000.0% | 245,100 | $270K |
| ADAR1 Capital Management, LLC | 0.05% | Reduce -23.1% | 227,228 | $250K |
| UBS Group AG | 0.00% | Add +1057.0% | 220,272 | $242K |
| Squarepoint Ops LLC | 0.00% | Add +202.9% | 217,921 | $240K |
| Group One Trading LLC | 0.01% | Add +178.3% | 207,744 | $229K |
| Schonfeld Strategic Advisors LLC | 0.00% | Add +30.4% | 201,715 | $222K |
| Jain Global LLC | 0.00% | New | 199,902 | $220K |
| Cubist Systematic Strategies, LLC | 0.00% | New | 194,031 | $213K |
| Bank of America Corp. | 0.00% | Add +93.2% | 163,830 | $180K |
| Citadel Advisors | 0.00% | Add +12.1% | 156,932 | $173K |
| Birchview Capital, LP | 0.13% | No change | 138,176 | $152K |
| Sequoia Financial Advisors, LLC | 0.00% | No change | 118,500 | $130K |
| Quantessence Capital LLC | 0.03% | New | 118,349 | $130K |
| LMR Partners LLP | 0.00% | New | 115,649 | $127K |
| ExodusPoint Capital Management, LP | 0.00% | New | 105,056 | $116K |
| Jefferies Financial Group Inc. | 0.00% | No change | 100,000 | $110K |
| Diametric Capital, LP | 0.13% | Reduce -57.0% | 96,113 | $106K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.02% | New | 83,130 | $91K |
| Financial Advocates Investment Management | 0.01% | No change | 78,616 | $86K |
| Velan Capital Investment Management LP | 0.08% | No change | 75,000 | $83K |
| T. Rowe Price Associates Inc. | 0.00% | No change | 64,777 | $72K |
| Persistent Asset Partners Ltd | 0.06% | Reduce -5.9% | 61,984 | $68K |
| Catalyst Funds Management Pty Ltd | 0.01% | New | 52,039 | $57K |
| Choreo, LLC | 0.00% | No change | 48,111 | $53K |
| Prudential Financial Inc. | 0.00% | No change | 47,050 | $52K |
| HB Wealth Management, LLC | 0.00% | Add +23.9% | 46,700 | $51K |
| Tudor Investment Corporation | 0.00% | No change | 46,464 | $51K |
| Invesco Ltd. | 0.00% | New | 43,697 | $48K |
| Lazard Asset Management LLC | 0.00% | Reduce -59.3% | 43,761 | $48K |
| Commonwealth Equity Services, LLC | 0.00% | Add +22.2% | 42,116 | $46K |
| Hudson Bay Capital Management LP | 0.00% | New | 36,900 | $41K |
| Virtu Financial LLC | 0.00% | New | 34,971 | $38K |
| US Bancorp \de | 0.00% | Reduce -15.6% | 33,487 | $37K |
| Sivia Capital Partners, LLC | 0.02% | Add +7.1% | 30,018 | $33K |
| Graham Capital Management, L.P. | 0.00% | Reduce -17.1% | 28,977 | $32K |
| Osaic Holdings, Inc. | 0.00% | Add +0.2% | 27,495 | $30K |
| Silvercrest Asset Management Group LLC | 0.00% | No change | 26,158 | $29K |
| Brevan Howard Capital Management LP | 0.00% | New | 23,672 | $26K |
| Traynor Capital Management, Inc. | 0.00% | Add +66.2% | 23,272 | $26K |
| Clearstead Advisors, LLC | 0.00% | No change | 22,000 | $24K |
| Bank of New York Mellon Corp | 0.00% | Reduce 0.0% | 20,219 | $22K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Add +20.6% | 19,300 | $21K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Add +16.9% | 17,019 | $19K |
| Drive Wealth Management, LLC | 0.00% | New | 16,677 | $18K |
"% of holder's portfolio" is GOSS's weight in each manager's 13F, not the share of Gossamer Bio Inc. the manager owns.