Gossamer BioGOSS
13F holders, Q2 2026 (June 30)170holders −15
27new positions
42sold out
5famous investors
$0.16avg. 13F price*
At the end of Q2 2026, 170 institutions reported holding Gossamer Bio Inc. (GOSS) in their 13F filings, down 15 from Q1 2026. 27 opened new positions and 42 sold out. The largest holders were D. E. Shaw & Co. ($6.7M), 683 Capital Management, LLC ($6.5M) and DeepCurrents Investment Group LLC ($6.0M). 5 famous investors held it, including David E. Shaw (0.0% of D. E. Shaw & Co.'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 Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 27 | $18.8M |
| Exits | 42 | $2.8M |
All 13F filers, Q1 2026 → Q2 2026: 240,681,682 shares bought and 39,554,115 shares sold, net +201,127,567 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 170 holders
| D. E. Shaw & Co. | 0.00% | Add +10417.7% | 40,959,285 | $6.7M |
| 683 Capital Management, LLC | 0.62% | Add +684.0% | 39,198,868 | $6.5M |
| DeepCurrents Investment Group LLC | 7.74% | New | 37,665,073 | $6.0M |
| Context Capital Management, LLC | 0.98% | New | 28,946,459 | $4.8M |
| Worth Venture Partners, LLC | 20.47% | New | 25,017,881 | $4.1M |
| AQR Capital Management | 0.00% | Add +54.3% | 15,629,993 | $2.6M |
| Gsa Capital Partners LLP | 0.16% | Add +360.5% | 14,986,947 | $2.5M |
| Wolverine Asset Management LLC | 0.11% | New | 12,894,746 | $2.1M |
| Renaissance Technologies | 0.00% | Add +854.9% | 11,629,896 | $1.9M |
| Kalehua Capital Management LLC | 1.05% | Add +8.9% | 11,149,363 | $1.8M |
| Vanguard Capital Management LLC | 0.00% | Add +0.2% | 9,416,023 | $1.6M |
| ARCH Venture Management, LLC | 0.12% | No change | 8,055,916 | $1.3M |
| Barclays PLC | 0.00% | Add +155.5% | 7,832,522 | $1.3M |
| Octagon Capital Advisors LP | 0.12% | No change | 7,750,000 | $1.3M |
| BlackRock, Inc. | 0.00% | Reduce -54.4% | 7,669,943 | $1.3M |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 7,573,388 | $1.2M |
| Two Sigma Investments, LP | 0.00% | Add +55.5% | 7,432,001 | $1.2M |
| Samsara Biocapital, LLC | 0.10% | No change | 7,222,559 | $1.2M |
| Qube Research & Technologies Ltd | 0.00% | Add +43.7% | 7,065,756 | $1.2M |
| Corient Private Wealth LP | 0.00% | Add +41.3% | 5,632,698 | $927K |
| Siren, L.L.C. | 0.02% | No change | 5,208,968 | $857K |
| HHLR Advisors, LTD. | 0.10% | No change | 4,974,041 | $819K |
| UBS Group AG | 0.00% | Add +64.3% | 3,093,785 | $510K |
| Squarepoint Ops LLC | 0.00% | Reduce -24.8% | 2,556,378 | $421K |
| Geode Capital Management, LLC | 0.00% | Reduce -49.8% | 2,481,605 | $409K |
| Millennium Management | 0.00% | Add +1182.0% | 2,402,633 | $395K |
| MB Generational Wealth, LLC | 0.18% | Add +44.7% | 2,217,451 | $365K |
| Jacobs Levy Equity Management, Inc. | 0.00% | Add +29.0% | 2,187,402 | $360K |
| Marshall Wace, LLP | 0.00% | New | 2,114,988 | $338K |
| Alyeska Investment Group, L.P. | 0.00% | No change | 2,051,442 | $338K |
| Acadian Asset Management LLC | 0.00% | Reduce -66.0% | 1,792,135 | $293K |
| HSBC Holdings PLC | 0.00% | Add +1289.4% | 1,583,118 | $267K |
| Ensign Peak Advisors, Inc | 0.00% | Reduce -14.8% | 1,450,979 | $239K |
| Vanguard Fiduciary Trust Co. | 0.00% | Reduce -11.3% | 1,245,392 | $205K |
| JPMorgan Chase & Co. | 0.00% | Add +1225.5% | 1,228,634 | $201K |
| Deutsche Bank AG | 0.00% | Reduce -15.3% | 1,106,441 | $188K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -4.4% | 1,128,451 | $186K |
| State Street Corp. | 0.00% | Reduce -74.6% | 1,114,718 | $183K |
| Hennion & Walsh Asset Management, Inc. | 0.01% | Add +32.6% | 1,098,914 | $181K |
| NEA Management Company, LLC | 0.01% | No change | 1,000,000 | $165K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -34.3% | 992,527 | $163K |
| Smith, Moore & Co. | 0.01% | Add +91.5% | 900,000 | $148K |
| Ishara Investments LP | 0.10% | No change | 820,000 | $135K |
| Panagora Asset Management Inc. | 0.00% | Add +56.0% | 733,216 | $121K |
| Mariner, LLC | 0.00% | Add +42.1% | 594,719 | $98K |
| Ieq Capital, LLC | 0.00% | Add +50.2% | 591,254 | $97K |
| Vanguard Portfolio Management LLC | 0.00% | Reduce -74.8% | 544,212 | $90K |
| Choreo, LLC | 0.00% | Add +116.0% | 540,111 | $89K |
| Tudor Investment Corporation | 0.00% | Add +316.2% | 479,581 | $79K |
| Virtu Financial LLC | 0.00% | Add +76.2% | 463,708 | $76K |
| Northern Trust Corp. | 0.00% | Reduce -67.5% | 458,498 | $75K |
| Invesco Ltd. | 0.00% | Reduce -4.9% | 442,268 | $73K |
| Bank of America Corp. | 0.00% | Reduce -87.5% | 396,727 | $65K |
| Susquehanna International Group, LLP | 0.00% | Add +182.1% | 383,049 | $63K |
| LPL Financial LLC | 0.00% | Reduce -10.6% | 332,534 | $55K |
| Mercer Global Advisors Inc. | 0.00% | Add +57.3% | 297,863 | $49K |
| Waddell & Associates, LLC | 0.00% | Add +287.6% | 261,798 | $43K |
| Morgan Stanley | 0.00% | Reduce -34.2% | 241,591 | $40K |
| Prudential Financial Inc. | 0.00% | Add +306.9% | 227,550 | $37K |
| ADAR1 Capital Management, LLC | 0.00% | Reduce -26.1% | 212,531 | $35K |
| Creative Planning | 0.00% | Add +68.7% | 211,955 | $35K |
| Merit Financial Group, LLC | 0.00% | Add +9.8% | 169,596 | $28K |
| Eventide Asset Management, LLC | 0.00% | New | 163,440 | $27K |
| Cerity Partners LLC | 0.00% | Add +50.6% | 160,399 | $26K |
| Sivia Capital Partners, LLC | 0.00% | Add +66.1% | 152,298 | $25K |
| SG Americas Securities, LLC | 0.00% | Add +14.1% | 146,737 | $24K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +297.5% | 144,473 | $24K |
| HighTower Advisors, LLC | 0.00% | Add +120.0% | 144,358 | $24K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +48.8% | 153,902 | $22K |
| Schonfeld Strategic Advisors LLC | 0.00% | New | 132,888 | $22K |
| FMR LLC | 0.00% | Add +478.8% | 130,325 | $21K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -16.7% | 121,039 | $20K |
| Osaic Holdings, Inc. | 0.00% | Add +8843.8% | 120,204 | $19K |
| Group One Trading LLC | 0.00% | Add +32.7% | 110,927 | $18K |
| Arax Advisory Partners | 0.00% | New | 108,204 | $18K |
| BCV Asset Management Inc. | 0.00% | No change | 106,500 | $18K |
| Rockefeller Capital Management L.P. | 0.00% | Reduce -1.6% | 105,866 | $17K |
| Balyasny Asset Management L.P. | 0.00% | Reduce -98.2% | 104,232 | $17K |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -7.3% | 101,993 | $17K |
| Quarry LP | 0.00% | No change | 100,000 | $16K |
| Focus Partners Wealth | 0.00% | Add +27.2% | 92,848 | $15K |
| Rhumbline Advisers | 0.00% | Reduce -59.1% | 88,599 | $15K |
| Captrust Financial Advisors | 0.00% | Add +42.2% | 81,778 | $13K |
| Vanguard Global Advisers, LLC | 0.00% | No change | 79,682 | $13K |
| BNP Paribas Financial Markets | 0.00% | Reduce -22.9% | 73,693 | $12K |
| Velan Capital Investment Management LP | 0.01% | No change | 70,000 | $12K |
| Caprock Group, LLC | 0.00% | No change | 70,000 | $12K |
| AlphaCore Capital LLC | 0.00% | Add +31.1% | 69,482 | $11K |
| Bronte Capital Management Pty Ltd. | 0.00% | New | 67,754 | $11K |
| Two Sigma Securities, LLC | 0.00% | New | 58,064 | $10K |
| Integrated Wealth Concepts LLC | 0.00% | Add +284.9% | 55,521 | $9K |
| Bull Harbor Capital LLC | 0.00% | Add +64.2% | 51,235 | $8K |
| Beacon Pointe Advisors, LLC | 0.00% | Add +71.4% | 48,000 | $8K |
| Bank of New York Mellon Corp | 0.00% | Reduce -89.3% | 45,713 | $8K |
| Y-Intercept (Hong Kong) Ltd | 0.00% | New | 43,210 | $7K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | No change | 42,800 | $7K |
| Prospera Financial Services Inc | 0.00% | New | 42,123 | $7K |
| Skaana Management L.P. | 0.06% | No change | 40,200 | $7K |
| Curi Capital, LLC | 0.00% | Add +6.8% | 39,784 | $7K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Add +122.8% | 39,060 | $6K |
"% of holder's portfolio" is GOSS's weight in each manager's 13F, not the share of Gossamer Bio Inc. the manager owns.