Institutional Ownership
Ptc Therapeutics Inc
CUSIP 69366J200COMPTCTQ1 2026
Shares Short
9.83M
As of Jul 15, 2026
Days to Cover
4.75
Short shares ÷ avg daily volume
Change vs Prior
-43.2%
vs previous settlement
Avg Daily Volume
2.07M
FINRA reported ADV
Short Interest History
17 settlements on record · FINRA consolidated
Higher short interest is bearish: increases show red, decreases green.
| Settlement | Shares Short | Prior | Change | Avg Daily Vol | Days to Cover |
|---|---|---|---|---|---|
| Jul 15, 2026 | 9.83M | 17.32M | -43.2% | 2.07M | 4.75 |
| Jun 30, 2026 | 17.32M | 11.78M | +46.9% | 3.23M | 5.36 |
| Jun 15, 2026 | 11.78M | 10.67M | +10.4% | 1.51M | 7.82 |
| May 29, 2026 | 10.67M | 10.24M | +4.2% | 963.2K | 11.08 |
| May 15, 2026 | 10.24M | 9.76M | +5.0% | 1.71M | 5.99 |
| Apr 30, 2026 | 9.76M | 8.55M | +14.1% | 1.31M | 7.44 |
| Apr 15, 2026 | 8.55M | 9.45M | -9.6% | 805.9K | 10.61 |
| Mar 31, 2026 | 9.45M | 8.85M | +6.8% | 1.12M | 8.41 |
| Mar 13, 2026 | 8.85M | 9.62M | -8.0% | 1.27M | 6.96 |
| Feb 27, 2026 | 9.62M | 9.59M | +0.3% | 1.18M | 8.13 |
| Feb 13, 2026 | 9.59M | 10.08M | -4.9% | 1.07M | 8.99 |
| Jan 30, 2026 | 10.08M | 10.29M | -2.0% | 1.08M | 9.35 |