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ASPN · Aspen Aerogels Inc · Short Volume

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$5.56 +0.08 (+1.46%)
Russell 2000 member Rebalance outlook locked
Market Cap
$431.54M
Shares
82.99M
Volume · Oct 1 1.07M Avg daily vol (3M) 1.17M

Daily short-sale volume published by FINRA from its trade-reporting facilities. It measures how many shares were sold short each day as a share of total volume — a daily flow, not the total outstanding short position.

Pull daily short volume through the short interest API or MCP →
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    • Short Volume

    Date Short Volume Short Exempt Total Volume Short %
    2026-09-30 160,070 0 280,927 57.0%
    2026-09-29 118,772 0 218,972 54.2%
    2026-09-28 141,067 25 302,146 46.7%
    2026-09-25 221,053 0 707,790 31.2%
    2026-09-24 287,312 0 815,459 35.2%
    2026-09-23 178,843 0 355,001 50.4%
    2026-09-22 269,593 3,000 439,454 61.3%
    2026-09-21 105,871 580 229,479 46.1%
    2026-09-18 64,875 0 126,155 51.4%
    2026-09-17 74,871 2,011 181,233 41.3%
    2026-09-16 69,386 981 171,806 40.4%
    2026-09-15 64,678 6 151,018 42.8%
    2026-09-14 72,009 147 166,762 43.2%
    2026-09-11 99,718 1,705 198,779 50.2%
    2026-09-10 78,910 0 165,369 47.7%
    2026-09-09 135,364 4 271,189 49.9%
    2026-09-08 89,733 5,631 191,980 46.7%
    2026-09-04 50,311 0 123,051 40.9%
    2026-09-03 122,098 28 265,796 45.9%
    2026-09-02 101,391 0 207,934 48.8%
    2026-09-01 172,320 1,282 345,713 49.8%
    2026-08-31 129,387 0 244,236 53.0%
    2026-08-28 119,976 31 287,427 41.7%
    2026-08-27 92,696 0 215,121 43.1%
    2026-08-26 60,450 0 160,862 37.6%
    2026-08-25 154,115 0 273,734 56.3%
    2026-08-24 117,411 1 201,972 58.1%
    2026-08-21 63,055 0 169,680 37.2%
    2026-08-20 84,558 0 190,779 44.3%
    2026-08-19 69,516 0 158,914 43.7%
    2026-08-18 113,664 0 249,057 45.6%
    2026-08-17 101,661 0 251,494 40.4%
    2026-08-14 152,923 700 284,150 53.8%
    2026-08-13 128,437 10 283,832 45.3%
    2026-08-12 180,818 0 357,020 50.6%
    2026-08-11 131,988 600 317,698 41.5%
    2026-08-10 157,670 13,598 375,630 42.0%
    2026-08-07 354,146 21,585 734,465 48.2%
    2026-08-06 2,542,284 59,587 5,881,823 43.2%
    2026-08-05 167,227 0 280,538 59.6%
    2026-08-04 183,973 569 307,377 59.9%
    2026-08-03 132,315 91 272,010 48.6%
    2026-07-31 140,576 1 229,783 61.2%
    2026-07-30 183,039 0 342,845 53.4%
    2026-07-29 147,870 0 304,292 48.6%
    2026-07-28 174,670 112 346,708 50.4%
    2026-07-27 176,476 3,244 370,141 47.7%
    2026-07-24 165,665 721 302,624 54.7%
    2026-07-23 113,643 59 197,267 57.6%
    2026-07-22 71,651 200 184,900 38.8%
    Showing 1–50 of 64 days
    Key facts CIK 1145986 CUSIP 04523Y105 13F (30d) 4 filings 4 filers Visit website Investor relations