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ACLS · Axcelis Technologies Inc · Short Volume

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$136.71 +5.53 (+4.22%) At close · Oct 1
S&P 600 member Russell 2000 member Rebalance outlook locked
Market Cap
$3.84B
Shares
30.88M
Volume · Oct 1 402.96K Avg daily vol (3M) 398.19K

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 %
    2026-10-01 91,884 0 165,628 55.5%
    2026-09-30 94,867 0 154,072 61.6%
    2026-09-29 106,272 0 176,719 60.1%
    2026-09-28 77,602 588 143,491 54.1%
    2026-09-25 100,361 350 180,646 55.6%
    2026-09-24 106,584 0 202,858 52.5%
    2026-09-23 92,808 62 231,597 40.1%
    2026-09-22 54,077 0 92,963 58.2%
    2026-09-21 58,162 202 119,336 48.7%
    2026-09-18 33,249 361 70,711 47.0%
    2026-09-17 113,355 70 165,518 68.5%
    2026-09-16 122,492 0 182,842 67.0%
    2026-09-15 65,558 0 129,236 50.7%
    2026-09-14 98,360 300 199,710 49.3%
    2026-09-11 91,211 0 119,143 76.6%
    2026-09-10 49,147 0 73,033 67.3%
    2026-09-09 68,183 0 121,335 56.2%
    2026-09-08 40,173 0 88,087 45.6%
    2026-09-04 68,957 0 154,303 44.7%
    2026-09-03 55,447 0 104,439 53.1%
    2026-09-02 69,441 13 189,780 36.6%
    2026-09-01 75,782 533 125,403 60.4%
    2026-08-31 68,742 0 103,728 66.3%
    2026-08-28 77,126 9,955 115,527 66.8%
    2026-08-27 59,165 3 113,831 52.0%
    2026-08-26 78,428 126 132,713 59.1%
    2026-08-25 66,589 0 126,251 52.7%
    2026-08-24 53,321 0 92,465 57.7%
    2026-08-21 48,603 0 80,793 60.2%
    2026-08-20 48,502 0 84,166 57.6%
    2026-08-19 113,028 0 174,077 64.9%
    2026-08-18 41,882 0 79,642 52.6%
    2026-08-17 57,198 0 116,831 49.0%
    2026-08-14 39,433 0 83,507 47.2%
    2026-08-13 42,766 18 61,600 69.4%
    2026-08-12 67,479 146 97,795 69.0%
    2026-08-11 58,789 893 94,251 62.4%
    2026-08-10 78,460 0 130,858 60.0%
    2026-08-07 119,212 0 184,209 64.7%
    2026-08-06 338,415 0 440,376 76.8%
    2026-08-05 197,485 0 288,325 68.5%
    2026-08-04 82,863 14,358 158,193 52.4%
    2026-08-03 104,241 0 170,448 61.2%
    2026-07-31 109,350 166 162,678 67.2%
    2026-07-30 97,846 10 130,165 75.2%
    2026-07-29 105,547 1,597 182,443 57.9%
    2026-07-28 112,214 1,334 269,095 41.7%
    2026-07-27 85,487 0 140,369 60.9%
    2026-07-24 62,115 0 111,934 55.5%
    2026-07-23 58,789 0 84,857 69.3%
    Showing 1–50 of 64 days
    Key facts CIK 1113232 CUSIP 054540208 13F (30d) 18 filings 10 filers Visit website Investor relations