PEN · Penumbra Inc
$317.90
+1.40 (+0.44%)
At close · Jul 23
Market Cap
$12.50B
Shares
39.33M
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
69/100
Short interest 5.2% of shares — P74
Days to cover 5.1 — P81
Price vs VWAP -1.2% — P52
Short-volume trend +3.9% — P66
Short interest change +2.6% — P54
Worst FTD 0.13% of shares — P78
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 | 2,037,620 | 1,986,919 | +50,701 | 5.10 |
| 2026-06-15 | 1,986,919 | 1,916,131 | +70,788 | 4.61 |
| 2026-05-29 | 1,916,131 | 1,916,276 | -145 | 4.16 |
| 2026-05-15 | 1,916,276 | 1,896,966 | +19,310 | 4.65 |
| 2026-04-30 | 1,896,966 | 2,007,168 | -110,202 | 3.28 |
| 2026-04-15 | 2,007,168 | 2,437,639 | -430,471 | 4.24 |
| 2026-03-31 | 2,437,639 | 2,061,336 | +376,303 | 3.72 |
| 2026-03-13 | 2,061,336 | 1,866,429 | +194,907 | 3.11 |
| 2026-02-27 | 1,866,429 | 1,863,136 | +3,293 | 3.00 |
| 2026-02-13 | 1,863,136 | 1,601,731 | +261,405 | 1.91 |
| 2026-01-30 | 1,601,731 | 1,722,051 | -120,320 | 1.00 |
| 2026-01-15 | 1,722,051 | 1,709,674 | +12,377 | 1.07 |
| 2025-12-31 | 1,709,674 | 1,607,603 | +102,071 | 4.32 |
| 2025-12-15 | 1,607,603 | 1,514,769 | +92,834 | 3.16 |
| 2025-11-28 | 1,514,769 | 1,687,371 | -172,602 | 3.05 |
| 2025-11-14 | 1,687,371 | 1,819,291 | -131,920 | 2.95 |
| 2025-10-31 | 1,819,291 | 1,733,518 | +85,773 | 4.61 |
| 2025-10-15 | 1,733,518 | 1,612,966 | +120,552 | 5.32 |
| 2025-09-30 | 1,612,966 | 1,978,313 | -365,347 | 3.85 |
| 2025-09-15 | 1,978,313 | 1,789,005 | +189,308 | 4.11 |
| 2025-08-29 | 1,789,005 | 1,631,808 | +157,197 | 3.84 |
| 2025-08-15 | 1,631,808 | 1,515,865 | +115,943 | 4.07 |
| 2025-07-31 | 1,515,865 | 1,830,104 | -314,239 | 2.55 |
Showing 1–23 of 23 settlements