PTCT short interest
PTC Therapeutics Inc. · Healthcare · Biotechnology · settlement date 2026-09-30
| Shares short | 9,168,333 |
|---|---|
| Change vs prior report | -570,586 (-5.9%) |
| Change over six months | -3.0% |
| Days to cover | 6.14 (sector: 3.78) |
| Average daily volume | 1,493,955 |
| Rank in Healthcare | #308 of 922 by days to cover |
PTCT short interest, last 12 months
| Settlement | Shares short | Change | Days to cover | Avg daily volume |
|---|---|---|---|---|
| 2026-09-30 | 9,168,333 | -5.9% | 6.14 | 1,493,955 |
| 2026-09-15 | 9,738,919 | -0.9% | 11.03 | 882,762 |
| 2026-08-31 | 9,828,154 | -3.8% | 12.13 | 809,909 |
| 2026-08-14 | 10,221,046 | -3.3% | 10.82 | 944,361 |
| 2026-07-31 | 10,566,249 | +7.5% | 7.52 | 1,404,384 |
| 2026-07-15 | 9,833,980 | -43.2% | 4.75 | 2,069,373 |
| 2026-06-30 | 17,315,032 | +46.9% | 5.36 | 3,228,848 |
| 2026-06-15 | 11,783,786 | +10.4% | 7.82 | 1,505,935 |
| 2026-05-29 | 10,674,185 | +4.2% | 11.08 | 963,231 |
| 2026-05-15 | 10,240,784 | +5.0% | 5.99 | 1,708,791 |
| 2026-04-30 | 9,756,300 | +14.1% | 7.44 | 1,311,465 |
| 2026-04-15 | 8,547,862 | -9.6% | 10.61 | 805,907 |
| 2026-03-31 | 9,452,081 | +6.8% | 8.41 | 1,123,937 |
| 2026-03-13 | 8,847,565 | -8.0% | 6.96 | 1,270,671 |
| 2026-02-27 | 9,616,593 | +0.3% | 8.13 | 1,183,440 |
| 2026-02-13 | 9,591,953 | -4.9% | 8.99 | 1,067,536 |
| 2026-01-30 | 10,081,569 | -2.0% | 9.35 | 1,077,954 |
| 2026-01-15 | 10,290,419 | -3.9% | 6.24 | 1,648,405 |
| 2025-12-31 | 10,709,685 | -6.4% | 10.03 | 1,068,070 |
| 2025-12-15 | 11,442,932 | -11.0% | 7.54 | 1,517,596 |
| 2025-11-28 | 12,859,294 | +36.5% | 4.10 | 3,134,304 |
| 2025-11-14 | 9,418,915 | +13.0% | 6.34 | 1,485,598 |
| 2025-10-31 | 8,337,064 | +6.7% | 9.96 | 837,044 |
| 2025-10-15 | 7,816,416 | +9.5% | 6.39 | 1,222,340 |
| 2025-09-30 | 7,136,920 | -2.1% | 5.81 | 1,227,824 |
import finzdata as yf
yf.Ticker("PTCT").short_interest # every report since 2017
yf.Client().short_interest(["PTCT"], start="2018-01-01")Healthcare short interest · PTCT price history · Who owns PTCT · All short interest