Gossamer Bio
GOSS · NASDAQ
$9.58+$1.15 (+13.64%)TodayMarket closed ·
Prev close $8.43
Who owns GOSS
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 53.9% of GOSS’s shares.
- 683 Capital Management LLC8.0%
- DeepCurrents Investment Group LLC7.7%
- Wolverine Trading, LLC7.2%
- D. E. Shaw & Co., L.P.6.0%
- Next 6 largest institutions25.0%
- All other shareholders46.1%
| Holder | Shares | % of shares |
|---|---|---|
| 683 Capital Management LLC | 39.20M | 8.02% |
| DeepCurrents Investment Group LLC | 37.67M | 7.70% |
| Wolverine Trading, LLC | 34.96M | 7.15% |
| D. E. Shaw & Co., L.P. | 29.13M | 5.96% |
| Context Capital Management LLC | 28.95M | 5.92% |
| Worth Venture Partners, LLC | 25.02M | 5.12% |
| Opaleye Management Inc. | 24.94M | 5.10% |
| AQR Capital Management, LLC | 15.63M | 3.20% |
| GSA Capital Partners LLP | 14.99M | 3.07% |
| Wolverine Asset Management, LLC | 12.89M | 2.64% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 86.39K | 0.02% |
| iShares Biotechnology ETF | 41.62K | 0.01% |
| Vanguard Extended Market Index Fund | 28.04K | 0.01% |
| Aon Hewitt Demo Small Cap Value Fund | 14.05K | 0.00% |
| Xtrackers S&P 500 Swap UCITS ETF | 13.83K | 0.00% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of GOSS in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Milligan Sandra | Award | 10.00K | — |
| Ciongoli Gregory Austin | Award | 30.00K | — |
| Drynan Skye | Award | 10.00K | — |
| Nathan Steven D | Award | 10.00K | — |
| Quisel John D | Award | 10.00K | — |
| Daniel Thomas O | Award | 10.00K | — |
| Cox Russell J. | Award | 10.00K | — |
| Smith Robert Paul JR | Award | 5.80M | — |
| Peterson Caryn | Award | 5.80M | — |
| Giraudo Bryan | Award | 5.80M | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 1.24M
- Days to cover
- 3.50
- % of shares outstanding
- 0.25%
- Average daily volume
- 353.41K
- Change since last report
- +30.5%
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