Gossamer Bio, Inc. GOSS
CIK 0001728117 · CUSIP 38341P102
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | Octagon Capital Advisors LP CIK 1839435 · View history | $22.57M 18,350,000 shares | 4.95% | 0(0.00%)Unchanged | SEC filing ↗ Aug 14, 2025 | ▾ |
| 02 | NEA Management Company, LLC CIK 1512848 · View history | $22.25M 18,093,034 shares | 1.68% | 0(0.00%)Unchanged | SEC filing ↗ Aug 14, 2025 | ▾ |
| 03 | BlackRock, Inc. CIK 2012383 · View history | $14.94M 12,142,596 shares | 0.00% | +9.07M(+295.20%)Added | SEC filing ↗ Aug 12, 2025 | ▾ |
| 04 | VANGUARD GROUP INC CIK 102909 · View history | $14.04M 11,410,792 shares | 0.00% | +1.33M(+13.20%)Added | SEC filing ↗ Aug 11, 2025 | ▾ |
| 05 | ARCH Venture Management, LLC CIK 1274403 · View history | $9.91M 8,055,916 shares | 3.31% | 0(0.00%)Unchanged | SEC filing ↗ Aug 14, 2025 | ▾ |
| 06 | FMR LLC CIK 315066 · View history | $9.00M 7,315,325 shares | 0.00% | -277.65K(-3.70%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 07 | ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history | $8.79M 7,146,022 shares | 0.02% | +787.91K(+12.40%)Added | SEC filing ↗ Aug 7, 2025 | ▾ |
| 08 | 683 Capital Management, LLC CIK 1404574 · View history | $7.80M 6,340,000 shares | 0.79% | +240.00K(+3.90%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 09 | Samsara BioCapital, LLC CIK 1744967 · View history | $7.54M 6,130,268 shares | 1.54% | 0(0.00%)Unchanged | SEC filing ↗ Aug 14, 2025 | ▾ |
| 10 | Palo Alto Investors LP CIK 1306923 · View history | $7.06M 5,739,013 shares | 1.50% | -537.88K(-8.60%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 11 | Siren, L.L.C. CIK 2005245 · View history | $6.41M 5,208,968 shares | 0.33% | 0(0.00%)Unchanged | SEC filing ↗ Aug 13, 2025 | ▾ |
| 12 | SILVERARC CAPITAL MANAGEMENT, LLC CIK 1816307 · View history | $6.33M 5,146,782 shares | 1.30% | -1.17M(-18.60%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 13 | HHLR ADVISORS, LTD. CIK 1762304 · View history | $6.12M 4,974,041 shares | 0.20% | 0(0.00%)Unchanged | SEC filing ↗ Aug 14, 2025 | ▾ |
| 14 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $5.60M 4,555,080 shares | 0.00% | +2.28M(+100.40%)Added | SEC filing ↗ Aug 8, 2025 | ▾ |
| 15 | Alyeska Investment Group, L.P. CIK 1453072 · View history | $5.48M 4,459,087 shares | 0.02% | +295.35K(+7.10%)Added | SEC filing ↗ Aug 14, 2025 | ▾ |
| 16 | Corient Private Wealth LLC CIK 1948780 · Amended · View history | $4.54M 3,693,683 shares | 0.01% | +302.20K(+8.90%)Added | SEC filing ↗ Sep 26, 2025 | ▾ |
| 17 | Monaco Asset Management SAM CIK 1803593 · View history | $4.37M 3,550,000 shares | 1.65% | -1.30M(-26.80%)Reduced | SEC filing ↗ Aug 7, 2025 | ▾ |
| 18 | Opaleye Management Inc. CIK 1595855 · Amended · View history | $4.36M 3,545,000 shares | 0.88% | -742.41K(-17.30%)Reduced | SEC filing ↗ Aug 15, 2025 | ▾ |
| 19 | Rock Springs Capital Management LP CIK 1595725 · View history | $4.02M 3,266,960 shares | 0.25% | 0(0.00%)Unchanged | SEC filing ↗ Aug 14, 2025 | ▾ |
| 20 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $3.36M 2,732,294 shares | 0.00% | +1.16M(+74.10%)Added | SEC filing ↗ Aug 13, 2025 | ▾ |
Showing 20 / 125 institutions. The complete set is available through the API.
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