INSP
Inspire Medical Systems, Inc.
$50.50
+1.35 (+2.75%)
At close · Jul 15
Market Cap
$1.46B
Shares
28,813,153
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
78/100
Short interest 16.3% of shares — P96
Days to cover 3.8 — P70
Price vs VWAP +8.8% — P83
Short-volume trend +2.1% — P59
Short interest change +30.8% — P83
Worst FTD 0.03% of shares — P58
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 | 4,694,748 | 3,589,616 | +1,105,132 | 3.80 |
| 2026-06-15 | 3,589,616 | 3,695,854 | -106,238 | 3.77 |
| 2026-05-29 | 3,695,854 | 3,681,515 | +14,339 | 3.11 |
| 2026-05-15 | 3,681,515 | 3,187,512 | +494,003 | 2.10 |
| 2026-04-30 | 3,187,512 | 2,888,404 | +299,108 | 4.04 |
| 2026-04-15 | 2,888,404 | 3,201,461 | -313,057 | 2.60 |
| 2026-03-31 | 3,201,461 | 3,568,904 | -367,443 | 3.30 |
| 2026-03-13 | 3,568,904 | 3,755,963 | -187,059 | 3.82 |
| 2026-02-27 | 3,755,963 | 3,942,973 | -187,010 | 2.51 |
| 2026-02-13 | 3,942,973 | 3,868,836 | +74,137 | 2.36 |
| 2026-01-30 | 3,868,836 | 2,950,708 | +918,128 | 2.59 |
| 2026-01-15 | 2,950,708 | 2,907,519 | +43,189 | 2.81 |
| 2025-12-31 | 2,907,519 | 3,465,930 | -558,411 | 1.47 |
| 2025-12-15 | 3,465,930 | 3,481,719 | -15,789 | 1.87 |
| 2025-11-28 | 3,481,719 | 3,671,015 | -189,296 | 1.81 |
| 2025-11-14 | 3,671,015 | 3,305,009 | +366,006 | 2.44 |
| 2025-10-31 | 3,305,009 | 2,830,111 | +474,898 | 3.34 |
| 2025-10-15 | 2,830,111 | 2,650,182 | +179,929 | 2.86 |
| 2025-09-30 | 2,650,182 | 2,617,345 | +32,837 | 2.58 |
| 2025-09-15 | 2,617,345 | 2,347,878 | +269,467 | 2.23 |
| 2025-08-29 | 2,347,878 | 2,291,236 | +56,642 | 2.67 |
| 2025-08-15 | 2,291,236 | 2,511,665 | -220,429 | 1.00 |
| 2025-07-31 | 2,511,665 | 3,290,632 | -778,967 | 4.83 |
Showing 1–23 of 23 settlements
Key facts
CIK
1609550
CUSIP
457730109
13F (30d)
25 filings
20 filers
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