PTCT
Ptc Therapeutics, Inc.
$78.84
+0.78 (+1.00%)
At close · Jul 15
Market Cap
$6.48B
Shares
82,949,338
Total shares sold short and not yet covered, reported to FINRA by broker-dealers and published twice a month (bi-monthly). Days to cover divides the short position by average daily volume; a high value (above 5) can signal short-squeeze potential.
Short Squeeze Score
81/100
Short interest 20.9% of shares — P98
Days to cover 5.4 — P83
Price vs VWAP +3.3% — P69
Short-volume trend +0.2% — P52
Short interest change +46.9% — P87
Worst FTD 0.15% of shares — P79
Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-06-30). Weighted mean of the available factors (short interest 30%, days to cover 20%, price vs VWAP 15%, short-volume trend 15%, short-interest change 10%, fails-to-deliver 10%) plus catalyst boosts (price spike, volume surge, earnings within days), capped at +20 and clamped to 100.
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
| 2026-06-30 | 17,315,032 | 11,783,786 | +5,531,246 | 5.36 |
| 2026-06-15 | 11,783,786 | 10,674,185 | +1,109,601 | 7.82 |
| 2026-05-29 | 10,674,185 | 10,240,784 | +433,401 | 11.08 |
| 2026-05-15 | 10,240,784 | 9,756,300 | +484,484 | 5.99 |
| 2026-04-30 | 9,756,300 | 8,547,862 | +1,208,438 | 7.44 |
| 2026-04-15 | 8,547,862 | 9,452,081 | -904,219 | 10.61 |
| 2026-03-31 | 9,452,081 | 8,847,565 | +604,516 | 8.41 |
| 2026-03-13 | 8,847,565 | 9,616,593 | -769,028 | 6.96 |
| 2026-02-27 | 9,616,593 | 9,591,953 | +24,640 | 8.13 |
| 2026-02-13 | 9,591,953 | 10,081,569 | -489,616 | 8.99 |
| 2026-01-30 | 10,081,569 | 10,290,419 | -208,850 | 9.35 |
| 2026-01-15 | 10,290,419 | 10,709,685 | -419,266 | 6.24 |
| 2025-12-31 | 10,709,685 | 11,442,932 | -733,247 | 10.03 |
| 2025-12-15 | 11,442,932 | 12,859,294 | -1,416,362 | 7.54 |
| 2025-11-28 | 12,859,294 | 9,418,915 | +3,440,379 | 4.10 |
| 2025-11-14 | 9,418,915 | 8,337,064 | +1,081,851 | 6.34 |
| 2025-10-31 | 8,337,064 | 7,816,416 | +520,648 | 9.96 |
| 2025-10-15 | 7,816,416 | 7,136,920 | +679,496 | 6.39 |
| 2025-09-30 | 7,136,920 | 7,292,929 | -156,009 | 5.81 |
| 2025-09-15 | 7,292,929 | 6,643,065 | +649,864 | 4.82 |
| 2025-08-29 | 6,643,065 | 6,496,742 | +146,323 | 5.62 |
| 2025-08-15 | 6,496,742 | 6,016,226 | +480,516 | 5.06 |
| 2025-07-31 | 6,016,226 | 5,772,442 | +243,784 | 5.04 |
Showing 1–23 of 23 settlements
Key facts
CIK
1070081
CUSIP
69366J200
13F (30d)
26 filings
25 filers
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