ASPN · Aspen Aerogels Inc
$5.85
-0.22 (-3.62%)
At close · Aug 14
Market Cap
$485.07M
Shares
82.99M
Shares sold short and not yet covered, reported twice monthly. Days to cover is the reported short position divided by average daily volume.
Model estimate
Expected Aug 14 short interest
as of Aug 14
9,003,770
+1.7% vs reported
Short Squeeze Score
67/100
Short interest 10.7% of shares — P91
Days to cover 9.0 — P87
Price vs VWAP +0.3% — P48
Short-volume trend -5.8% — P29
Short interest change +7.6% — P74
Worst FTD 0.00% of shares — P35
Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-07-31). 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 |
|---|---|---|---|---|
|
2026-08-31
Scheduled
FINRA publishes Sep 10
|
— | — | — | — |
|
2026-08-14
Scheduled
FINRA publishes Aug 25
|
— | — | — | — |
| 2026-07-31 | 8,849,264 | 8,223,398 | +625,866 | 8.96 |
| 2026-07-15 | 8,223,398 | 7,102,074 | +1,121,324 | 8.41 |
| 2026-06-30 | 7,102,074 | 7,110,861 | -8,787 | 3.76 |
| 2026-06-15 | 7,110,861 | 7,089,306 | +21,555 | 5.78 |
| 2026-05-29 | 7,089,306 | 7,736,011 | -646,705 | 4.62 |
| 2026-05-15 | 7,736,011 | 7,999,553 | -263,542 | 3.12 |
| 2026-04-30 | 7,999,553 | 7,017,875 | +981,678 | 5.02 |
| 2026-04-15 | 7,017,875 | 6,232,371 | +785,504 | 5.26 |
| 2026-03-31 | 6,232,371 | 7,054,834 | -822,463 | 5.33 |
| 2026-03-13 | 7,054,834 | 7,449,281 | -394,447 | 4.47 |
| 2026-02-27 | 7,449,281 | 7,432,237 | +17,044 | 3.04 |
| 2026-02-13 | 7,432,237 | 7,597,323 | -165,086 | 6.34 |
| 2026-01-30 | 7,597,323 | 8,730,143 | -1,132,820 | 4.86 |
| 2026-01-15 | 8,730,143 | 9,150,305 | -420,162 | 5.51 |
| 2025-12-31 | 9,150,305 | 8,377,032 | +773,273 | 4.01 |
| 2025-12-15 | 8,377,032 | 8,561,660 | -184,628 | 4.84 |
| 2025-11-28 | 8,561,660 | 9,669,850 | -1,108,190 | 3.89 |
| 2025-11-14 | 9,669,850 | 8,544,699 | +1,125,151 | 2.01 |
| 2025-10-31 | 8,544,699 | 8,579,892 | -35,193 | 4.82 |
| 2025-10-15 | 8,579,892 | 10,285,318 | -1,705,426 | 3.71 |
| 2025-09-30 | 10,285,318 | 9,124,198 | +1,161,120 | 7.09 |
| 2025-09-15 | 9,124,198 | 9,301,272 | -177,074 | 5.55 |
| 2025-08-29 | 9,301,272 | 9,197,043 | +104,229 | 7.01 |
| 2025-08-15 | 9,197,043 | 8,512,189 | +684,854 | 2.68 |
Showing 1–24 of 24 settlements
Key facts
CIK
1145986
CUSIP
04523Y105
13F (30d)
175 filings
172 filers
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