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 APELLIS PHARMACEUTICALS INC (APLS). 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 | 14,925 | -1,853 | -11.0% | 0.00% | $338K | $22.63 |
| 2025 Q2 | REDUCED | 16,778 | -13,263 | -44.1% | 0.00% | $290K | $17.31 |
| 2025 Q1 | REDUCED | 30,041 | -12,112 | -28.7% | 0.00% | $657K | $21.87 |
| 2024 Q3 | ADDED | 42,153 | +7,454 | +21.5% | 0.00% | $1.2M | $28.84 |
| 2024 Q2 | REDUCED | 34,699 | -219,206 | -86.3% | 0.01% | $1.3M | $38.36 |
| 2023 Q4 | ADDED | 253,905 | +27,221 | +12.0% | 0.04% | $15.2M | $59.86 |
| 2023 Q3 | ADDED | 226,684 | +207,866 | +1104.6% | 0.03% | $8.6M | $38.04 |
| 2023 Q2 | ADDED | 18,818 | +13,908 | +283.3% | 0.01% | $1.7M | $91.10 |
| 2023 Q1 | REDUCED | 4,910 | -45,913 | -90.3% | 0.00% | $324K | $65.96 |
| 2022 Q4 | ADDED | 50,823 | +25,000 | +96.8% | 0.01% | $2.6M | $51.71 |
As of 2025 Q4 — sorted by position size