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ACAD · Acadia Pharmaceuticals Inc · Short Volume

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$20.19 -0.25 (-1.22%) At close · Oct 21
S&P 600 member Russell 2000 member Rebalance outlook locked
Market Cap
$3.51B
Shares
172.31M
Volume · Oct 21 1.41M Avg daily vol (3M) 1.86M

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 %
    2026-10-21 271,571 432 484,520 56.0%
    2026-10-20 292,084 8,200 551,242 53.0%
    2026-10-19 226,788 223 486,097 46.7%
    2026-10-16 268,468 0 511,503 52.5%
    2026-10-15 187,058 1,030 412,977 45.3%
    2026-10-14 325,993 0 582,177 56.0%
    2026-10-13 525,944 0 815,517 64.5%
    2026-10-12 150,873 127 397,226 38.0%
    2026-10-09 274,412 7 437,708 62.7%
    2026-10-08 278,197 7,500 455,363 61.1%
    2026-10-07 259,148 0 437,169 59.3%
    2026-10-06 305,339 3,082 566,669 53.9%
    2026-10-05 540,405 1,340 1,144,364 47.2%
    2026-10-02 624,297 0 1,113,432 56.1%
    2026-10-01 423,049 1,010 871,762 48.5%
    2026-09-30 437,933 0 936,031 46.8%
    2026-09-29 368,698 0 1,091,284 33.8%
    2026-09-28 535,983 0 1,463,137 36.6%
    2026-09-25 572,487 21,825 1,463,422 39.1%
    2026-09-24 876,411 50,241 2,703,076 32.4%
    2026-09-23 235,957 400 472,282 50.0%
    2026-09-22 226,794 2,233 459,053 49.4%
    2026-09-21 206,695 0 392,724 52.6%
    2026-09-18 361,110 147 478,671 75.4%
    2026-09-17 235,529 3,593 379,818 62.0%
    2026-09-16 196,689 0 402,523 48.9%
    2026-09-15 159,637 900 370,480 43.1%
    2026-09-14 168,203 3,120 572,168 29.4%
    2026-09-11 178,913 182 429,818 41.6%
    2026-09-10 167,506 0 322,462 51.9%
    2026-09-09 186,479 173 403,987 46.2%
    2026-09-08 268,151 1,370 478,799 56.0%
    2026-09-04 178,644 837 705,968 25.3%
    2026-09-03 151,631 2,911 687,063 22.1%
    2026-09-02 113,336 0 524,871 21.6%
    2026-09-01 101,139 0 239,044 42.3%
    2026-08-31 111,729 0 227,568 49.1%
    2026-08-28 191,187 281 444,477 43.0%
    2026-08-27 165,025 4,100 330,932 49.9%
    2026-08-26 201,490 370 509,858 39.5%
    2026-08-25 264,735 41,742 591,814 44.7%
    2026-08-24 140,808 10,545 382,374 36.8%
    2026-08-21 126,034 0 377,515 33.4%
    2026-08-20 253,402 49 429,734 59.0%
    2026-08-19 335,565 2,201 945,641 35.5%
    2026-08-18 412,365 6,192 893,819 46.1%
    2026-08-17 155,843 2,842 365,883 42.6%
    2026-08-14 145,094 1,000 453,834 32.0%
    2026-08-13 206,005 5,050 549,850 37.5%
    2026-08-12 245,991 6,023 492,842 49.9%
    Showing 1–50 of 65 days
    Key facts CIK 1070494 CUSIP 004225108 13F (30d) 42 filings 41 filers Visit website Investor relations