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PEN · Penumbra Inc · Short Volume

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$317.55 -0.45 (-0.14%) At close · Oct 2
S&P 400 member Russell 1000 member Rebalance outlook locked
Market Cap
$12.56B
Shares
39.39M
Volume · Oct 2 239.68K Avg daily vol (3M) 342.99K

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 %
    2026-10-02 53,864 0 106,259 50.7%
    2026-10-01 100,600 0 164,950 61.0%
    2026-09-30 70,674 0 141,471 50.0%
    2026-09-29 42,044 16 81,760 51.4%
    2026-09-28 27,961 0 108,430 25.8%
    2026-09-25 49,349 0 87,463 56.4%
    2026-09-24 66,379 0 171,293 38.8%
    2026-09-23 81,104 6 219,898 36.9%
    2026-09-22 167,362 0 385,072 43.5%
    2026-09-21 70,158 25 145,959 48.1%
    2026-09-18 110,991 16 228,269 48.6%
    2026-09-17 162,582 0 191,804 84.8%
    2026-09-16 76,050 137 287,090 26.5%
    2026-09-15 119,841 0 303,703 39.5%
    2026-09-14 44,121 7 68,945 64.0%
    2026-09-11 39,248 0 62,635 62.7%
    2026-09-10 43,001 0 58,046 74.1%
    2026-09-09 59,160 0 113,388 52.2%
    2026-09-08 100,190 67 154,936 64.7%
    2026-09-04 28,314 0 41,598 68.1%
    2026-09-03 38,858 0 48,717 79.8%
    2026-09-02 27,057 0 43,522 62.2%
    2026-09-01 30,736 0 52,037 59.1%
    2026-08-31 50,581 24 75,447 67.0%
    2026-08-28 30,396 1 45,385 67.0%
    2026-08-27 88,798 6 196,969 45.1%
    2026-08-26 119,215 0 192,839 61.8%
    2026-08-25 52,137 0 85,236 61.2%
    2026-08-24 30,477 61 59,322 51.4%
    2026-08-21 31,008 79 62,700 49.5%
    2026-08-20 35,733 0 57,753 61.9%
    2026-08-19 57,012 33 151,543 37.6%
    2026-08-18 18,132 0 39,927 45.4%
    2026-08-17 31,027 79 58,127 53.4%
    2026-08-14 17,472 255 53,437 32.7%
    2026-08-13 30,370 0 52,187 58.2%
    2026-08-12 36,928 0 96,121 38.4%
    2026-08-11 33,697 0 59,922 56.2%
    2026-08-10 25,911 50 54,418 47.6%
    2026-08-07 28,480 0 72,357 39.4%
    2026-08-06 39,059 0 82,230 47.5%
    2026-08-05 37,274 1 96,444 38.6%
    2026-08-04 79,291 2 160,920 49.3%
    2026-08-03 46,434 4 119,928 38.7%
    2026-07-31 40,145 0 112,191 35.8%
    2026-07-30 43,689 0 101,245 43.2%
    2026-07-29 29,605 3 101,181 29.3%
    2026-07-28 33,409 1 111,947 29.8%
    2026-07-27 25,249 2 88,832 28.4%
    2026-07-24 68,267 0 132,562 51.5%
    Showing 1–50 of 64 days
    Key facts CIK 1321732 CUSIP 70975L107 13F (30d) 14 filings 12 filers Visit website Investor relations