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CPSA · Calamos S&P 500 Structured Alt Protection ETF - August · Short Volume ETF

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$28.20 -0.03 (-0.11%) At close · Oct 22
Volume · Oct 22 1044 Avg daily vol (3M) 8203

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 %
    2026-10-22 79 0 935 8.4%
    2026-10-21 402 0 2,230 18.0%
    2026-10-20 3 0 2,570 0.1%
    2026-10-19 669 0 3,364 19.9%
    2026-10-16 105 0 865 12.1%
    2026-10-15 116 0 119 97.5%
    2026-10-14 1,003 0 1,523 65.8%
    2026-10-13 2 0 6 33.3%
    2026-10-12 641 0 662 96.8%
    2026-10-09 7 0 11 63.6%
    2026-10-08 62 0 74 84.0%
    2026-10-07 54 0 61 88.8%
    2026-10-05 103 0 1,111 9.3%
    2026-10-02 114 0 134 84.9%
    2026-10-01 37 0 27,814 0.1%
    2026-09-30 503 0 1,008 49.9%
    2026-09-29 1 0 279 0.4%
    2026-09-28 2,040 0 2,139 95.4%
    2026-09-25 21 0 315 6.7%
    2026-09-24 4 0 129 3.1%
    2026-09-22 3 0 109 2.8%
    2026-09-21 206 0 682 30.2%
    2026-09-18 3 0 35 8.6%
    2026-09-17 15 0 48 31.4%
    2026-09-16 15 0 2,786 0.5%
    2026-09-15 721 0 726 99.3%
    2026-09-14 526 0 537 98.0%
    2026-09-11 2 0 465 0.4%
    2026-09-10 472 0 844 55.9%
    2026-09-09 1 0 35 2.8%
    2026-09-08 4 0 513 0.8%
    2026-09-04 308 0 461 66.9%
    2026-09-03 15 0 151 9.9%
    2026-09-02 14 0 50 27.9%
    2026-09-01 3,832 0 4,142 92.5%
    2026-08-31 503 0 1,077 46.7%
    2026-08-28 453 0 517 87.7%
    2026-08-27 4,765 0 5,023 94.9%
    2026-08-26 5,564 0 5,571 99.9%
    2026-08-25 953 0 3,253 29.3%
    2026-08-24 1,684 0 1,698 99.2%
    2026-08-21 2,924 0 6,148 47.6%
    2026-08-20 2,198 0 2,488 88.3%
    2026-08-19 19 0 40 48.0%
    2026-08-18 1 0 446 0.2%
    2026-08-17 3,145 0 10,073 31.2%
    2026-08-14 571 0 830 68.8%
    2026-08-13 2,995 0 7,603 39.4%
    2026-08-12 2 0 2 100.0%
    2026-08-11 1,126 0 3,324 33.9%
    Showing 1–50 of 63 days