Ownership history in Ghost Tree Capital, LLC · 13 quarters on record
This page tracks every 13F SEC filing in which Ghost Tree Capital, LLC reported a position in PTC THERAPEUTICS INC (PTCT). 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) |
|---|---|---|---|---|---|---|---|
| 2024 Q2 | ADDED | 19,000 | +2,325 | +13.9% | 0.18% | $581K | $30.58 |
| 2023 Q2 | REDUCED | 16,675 | -483,325 | -96.7% | 0.22% | $678K | $40.67 |
| 2018 Q3 | REDUCED | 500,000 | -175,000 | -25.9% | 5.01% | $23.5M | $47.00 |
| 2018 Q2 | ADDED | 675,000 | +475,000 | +237.5% | 6.70% | $22.8M | $33.73 |
| 2018 Q1 | ADDED | 200,000 | +100,000 | +100.0% | 1.09% | $5.4M | $27.06 |
| 2017 Q3 | UNCHANGED | 100,000 | — | 0% | 0.42% | $2.0M | $20.01 |
| 2017 Q3 | REDUCED | 100,000 | -100,000 | -50.0% | 0.42% | $2.0M | $20.01 |
| 2017 Q2 | UNCHANGED | 200,000 | — | 0% | 0.76% | $3.7M | $18.33 |
| 2017 Q1 | ADDED | 200,000 | +100,000 | +100.0% | 0.37% | $2.0M | $9.84 |
| 2015 Q2 | ADDED | 100,000 | +40,000 | +66.7% | 1.66% | $4.8M | $48.13 |
As of 2025 Q4 — sorted by position size