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PRLB · Proto Labs Inc · Short Volume

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$89.14 +1.41 (+1.61%)
S&P 600 member Russell 2000 member Rebalance outlook locked
Market Cap
$2.10B
Shares
23.92M
Volume · Oct 21 8001 Avg daily vol (3M) 204.27K

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 %
    2026-10-20 43,491 0 67,817 64.1%
    2026-10-19 33,777 0 52,247 64.6%
    2026-10-16 41,793 0 75,946 55.0%
    2026-10-15 54,265 0 88,328 61.4%
    2026-10-14 37,249 0 59,988 62.1%
    2026-10-13 21,576 1 33,465 64.5%
    2026-10-12 23,048 0 47,717 48.3%
    2026-10-09 36,640 0 56,505 64.8%
    2026-10-08 27,505 0 46,597 59.0%
    2026-10-07 32,210 0 62,423 51.6%
    2026-10-06 49,767 0 126,092 39.5%
    2026-10-05 62,852 0 80,239 78.3%
    2026-10-02 60,566 0 92,405 65.5%
    2026-10-01 33,923 0 76,162 44.5%
    2026-09-30 36,593 0 54,523 67.1%
    2026-09-29 38,964 0 82,337 47.3%
    2026-09-28 51,120 50 81,054 63.1%
    2026-09-25 60,204 0 94,579 63.7%
    2026-09-24 135,896 0 204,343 66.5%
    2026-09-23 37,458 0 70,388 53.2%
    2026-09-22 43,846 0 72,439 60.5%
    2026-09-21 51,459 0 95,733 53.8%
    2026-09-18 48,762 0 77,629 62.8%
    2026-09-17 92,082 0 115,873 79.5%
    2026-09-16 77,813 0 120,431 64.6%
    2026-09-15 22,880 1 41,409 55.3%
    2026-09-14 30,227 0 50,932 59.3%
    2026-09-11 17,732 0 30,736 57.7%
    2026-09-10 36,715 0 53,011 69.3%
    2026-09-09 18,813 376 32,251 58.3%
    2026-09-08 19,199 0 33,111 58.0%
    2026-09-04 29,287 0 48,566 60.3%
    2026-09-03 14,917 0 27,998 53.3%
    2026-09-02 29,071 0 43,550 66.8%
    2026-09-01 34,510 0 48,324 71.4%
    2026-08-31 25,387 0 37,859 67.1%
    2026-08-28 40,408 0 63,215 63.9%
    2026-08-27 31,874 0 63,025 50.6%
    2026-08-26 25,762 0 54,484 47.3%
    2026-08-25 31,882 0 55,446 57.5%
    2026-08-24 28,722 0 63,031 45.6%
    2026-08-21 26,878 0 54,002 49.8%
    2026-08-20 26,874 281 62,731 42.8%
    2026-08-19 46,772 0 89,016 52.5%
    2026-08-18 23,438 74 63,192 37.1%
    2026-08-17 18,988 0 52,135 36.4%
    2026-08-14 23,554 0 32,990 71.4%
    2026-08-13 29,259 0 54,088 54.1%
    2026-08-12 32,220 0 52,746 61.1%
    2026-08-11 30,561 0 55,747 54.8%
    Showing 1–50 of 65 days
    Key facts CIK 1443669 CUSIP 743713109 13F (30d) 30 filings 30 filers Visit website Investor relations