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INSM · INSMED Inc · Short Volume

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$114.14 -1.49 (-1.29%) At close · Sep 30
Russell 1000 member Rebalance outlook locked
Market Cap
$25.73B
Shares
218.38M
Volume · Sep 30 2.87M Avg daily vol (3M) 2.45M

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 %
    2026-09-30 432,013 0 969,481 44.6%
    2026-09-29 378,731 583 797,957 47.5%
    2026-09-28 262,871 0 711,566 36.9%
    2026-09-25 480,920 35,368 1,473,193 32.6%
    2026-09-24 559,919 90 1,211,805 46.2%
    2026-09-23 291,472 1,972 924,554 31.5%
    2026-09-22 343,015 100 850,562 40.3%
    2026-09-21 544,853 0 896,382 60.8%
    2026-09-18 748,938 0 1,076,884 69.5%
    2026-09-17 466,892 0 729,370 64.0%
    2026-09-16 312,436 0 581,090 53.8%
    2026-09-15 523,098 1 999,799 52.3%
    2026-09-14 342,696 300 721,127 47.5%
    2026-09-11 339,038 580 678,116 50.0%
    2026-09-10 427,557 0 775,731 55.1%
    2026-09-09 661,124 34,379 1,054,992 62.7%
    2026-09-08 326,975 3,101 684,036 47.8%
    2026-09-04 268,223 6,106 666,026 40.3%
    2026-09-03 439,210 132 923,640 47.6%
    2026-09-02 379,271 0 958,427 39.6%
    2026-09-01 263,878 427 544,943 48.4%
    2026-08-31 403,105 0 736,863 54.7%
    2026-08-28 348,697 46 780,260 44.7%
    2026-08-27 204,368 911 431,583 47.4%
    2026-08-26 292,351 0 624,849 46.8%
    2026-08-25 340,514 9,050 591,408 57.6%
    2026-08-24 219,541 700 527,656 41.6%
    2026-08-21 184,688 200 408,621 45.2%
    2026-08-20 211,863 604 846,104 25.0%
    2026-08-19 258,287 0 570,690 45.3%
    2026-08-18 204,274 0 475,588 43.0%
    2026-08-17 255,507 0 726,925 35.1%
    2026-08-14 271,953 3 923,432 29.5%
    2026-08-13 253,991 1,922 1,008,768 25.2%
    2026-08-12 185,376 0 627,757 29.5%
    2026-08-11 430,452 0 997,640 43.1%
    2026-08-10 735,539 0 1,553,277 47.4%
    2026-08-07 1,110,280 35,956 2,428,062 45.7%
    2026-08-06 2,158,560 1,113 4,988,555 43.3%
    2026-08-05 335,649 141 1,967,342 17.1%
    2026-08-04 424,027 0 2,008,684 21.1%
    2026-08-03 276,061 467 1,571,493 17.6%
    2026-07-31 379,072 20 1,340,913 28.3%
    2026-07-30 643,095 10 1,579,424 40.7%
    2026-07-29 359,003 250 880,963 40.8%
    2026-07-28 240,855 0 766,904 31.4%
    2026-07-27 228,136 0 739,955 30.8%
    2026-07-24 288,388 20 714,789 40.3%
    2026-07-23 278,486 0 702,578 39.6%
    2026-07-22 361,378 0 786,399 46.0%
    Showing 1–50 of 64 days
    Key facts CIK 1104506 CUSIP 457669307 13F (30d) 16 filings 13 filers Visit website Investor relations