Ownership history in EcoR1 Capital, LLC · 19 quarters on record
This page tracks every 13F SEC filing in which EcoR1 Capital, 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 | 3,447,156 | -8,448,652 | -71.0% | 3.74% | $78.0M | $22.63 |
| 2025 Q2 | UNCHANGED | 11,895,808 | — | 0% | 12.19% | $205.9M | $17.31 |
| 2025 Q1 | ADDED | 11,895,808 | +4,965 | +0.0% | 15.43% | $260.2M | $21.87 |
| 2024 Q4 | UNCHANGED | 11,890,843 | — | 0% | 14.35% | $379.4M | $31.91 |
| 2024 Q3 | ADDED | 11,890,843 | +283,418 | +2.4% | 11.74% | $342.9M | $28.84 |
| 2024 Q2 | ADDED | 11,607,425 | +250,000 | +2.2% | 13.62% | $445.3M | $38.36 |
| 2024 Q1 | ADDED | 11,357,425 | +184,357 | +1.7% | 16.89% | $667.6M | $58.78 |
| 2023 Q4 | ADDED | 11,173,068 | +10,440,568 | +1425.3% | 17.37% | $668.8M | $59.86 |
| 2023 Q3 | REDUCED | 732,500 | -10,167,359 | -93.3% | 0.94% | $27.9M | $38.04 |
| 2023 Q3 | ADDED | 10,899,859 | +5,448,212 | +99.9% | 13.99% | $414.6M | $38.04 |
As of 2025 Q4 — sorted by position size