Ownership history in GROUP ONE TRADING LLC · 16 quarters on record
This page tracks every 13F SEC filing in which GROUP ONE TRADING LLC reported a position in GOSSAMER BIO INC (GOSS). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2025 Q3 | REDUCED | 74,531 | -158,639 | -68.0% | 0.00% | $196K | $2.63 |
| 2025 Q2 | ADDED | 233,170 | +25,426 | +12.2% | 0.00% | $287K | $1.23 |
| 2025 Q1 | ADDED | 207,744 | +133,100 | +178.3% | 0.00% | $229K | $1.10 |
| 2024 Q4 | ADDED | 74,644 | +63,580 | +574.7% | 0.00% | $68K | $0.90 |
| 2024 Q3 | REDUCED | 11,064 | -47,874 | -81.2% | 0.00% | $11K | $0.99 |
| 2022 Q4 | REDUCED | 58,938 | -72,281 | -55.1% | 0.00% | $128K | $2.17 |
| 2022 Q3 | REDUCED | 131,219 | -2,985 | -2.2% | 0.00% | $1.6M | $11.98 |
| 2022 Q2 | ADDED | 134,204 | +126,664 | +1679.9% | 0.00% | $1.1M | $8.37 |
| 2022 Q1 | REDUCED | 7,540 | -4,259 | -36.1% | 0.00% | $65K | $8.68 |
| 2021 Q4 | REDUCED | 11,799 | -2,211 | -15.8% | 0.00% | $133K | $11.31 |
As of 2025 Q4 — sorted by position size