Deep Track Capital, LP: APELLIS PHARMACEUTICALS INC (APLS): Quarterly 13F Position History
As of Q1 2026, Deep Track Capital, LP reported 4,532,374 shares of APELLIS PHARMACEUTICALS INC (APLS), worth $182.3M and representing 3.8% of its 13F equity book. Quarter-over-quarter share count change: 3,217,626 (-41.5%) . The position first appeared in Q1 2024 and has been disclosed across 9 13F-HR filings in Pactolio's tracked window.
- 4,532,374Shares Held (Latest Filing)
- $182.3MReported Market Value (Latest Filing)
- 3.8%Portfolio Weight (% of 13F Equity Book)
- 3,217,626Quarter-over-Quarter Share Change
- -$12.3MQuarter-over-Quarter Value Change
- 8,000,382Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 9 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 4,532,374 | 3,217,626 | -41.5% | $182.3M | 3.8% | $40.2 |
| Q4 2025 | 7,750,000 | 250,382 | -3.1% | $194.7M | 4.4% | $25.1 |
| Q3 2025 | 8,000,382 | +1,000,382 | +14.3% | $181.0M | 5.1% | $22.6 |
| Q2 2025 | 7,000,000 | +2,000,000 | +40.0% | $121.2M | 3.9% | $17.3 |
| Q1 2025 | 5,000,000 | +725,079 | +17.0% | $109.3M | 3.5% | $21.9 |
| Q4 2024 | 4,274,921 | 125,733 | -2.9% | $136.4M | 5.1% | $31.9 |
| Q3 2024 | 4,400,654 | +1,900,654 | +76.0% | $126.9M | 4.1% | $28.8 |
| Q2 2024 | 2,500,000 | +1,500,000 | +150.0% | $95.9M | 2.9% | $38.4 |
| Q1 2024 | 1,000,000 | — | — | $58.8M | 1.7% | $58.8 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Deep Track Capital, LP first disclose a APLS position in 13F-HR filings?
Deep Track Capital, LP first reported APELLIS PHARMACEUTICALS INC (APLS) on its 13F-HR filing for the period ending 2024-03-31 (Q1 2024). The position has appeared on 9 reported quarters within Pactolio's tracked window.
What was Deep Track Capital, LP's most recent quarter-over-quarter share-count change in APLS?
Between Q4 2025 and Q1 2026, Deep Track Capital, LP reduced its APLS position by 3,217,626 shares (-41.5%), leaving 4,532,374 shares at a market value of $182.3M.
Does the implied price-per-share represent Deep Track Capital, LP's cost basis in APLS?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.