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RARE · Ultragenyx Pharmaceutical Inc.

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$15.32 +0.02 (+0.13%)
Russell 2000 member Rebalance outlook locked
Market Cap
$1.51B
Shares
98.59M

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 %
    2026-09-04 2,257,754 372,110 5,580,455 40.5%
    2026-09-03 6,455,598 746,401 13,466,913 47.9%
    2026-09-02 400,535 0 772,680 51.8%
    2026-09-01 242,610 0 896,221 27.1%
    2026-08-31 258,114 12 595,515 43.3%
    2026-08-28 197,005 600 495,918 39.7%
    2026-08-27 209,563 0 486,037 43.1%
    2026-08-26 339,695 610 652,594 52.1%
    2026-08-25 590,125 211 1,938,826 30.4%
    2026-08-24 262,603 9 591,525 44.4%
    2026-08-21 479,704 1,635 949,673 50.5%
    2026-08-20 763,848 149 1,494,937 51.1%
    2026-08-19 219,555 0 589,071 37.3%
    2026-08-18 204,631 537 617,153 33.2%
    2026-08-17 181,721 0 431,950 42.1%
    2026-08-14 209,483 0 521,355 40.2%
    2026-08-13 125,184 38 245,552 51.0%
    2026-08-12 214,033 2 433,492 49.4%
    2026-08-11 376,583 0 791,828 47.6%
    2026-08-10 380,387 0 819,920 46.4%
    2026-08-07 503,929 0 1,462,934 34.4%
    2026-08-06 314,607 141 573,529 54.9%
    2026-08-05 568,133 227 1,098,754 51.7%
    2026-08-04 211,677 15 633,341 33.4%
    2026-08-03 269,712 1,484 948,205 28.4%
    2026-07-31 234,724 24 442,059 53.1%
    2026-07-30 322,942 0 642,912 50.2%
    2026-07-29 423,611 0 653,014 64.9%
    2026-07-28 387,257 0 614,496 63.0%
    2026-07-27 333,226 0 535,654 62.2%
    2026-07-24 275,794 0 540,244 51.0%
    2026-07-23 202,755 0 411,278 49.3%
    2026-07-22 203,384 0 460,404 44.2%
    2026-07-21 298,959 200 628,168 47.6%
    2026-07-20 177,570 172 478,273 37.1%
    2026-07-17 218,101 430 522,230 41.8%
    2026-07-16 178,828 10 363,554 49.2%
    2026-07-15 155,457 0 335,215 46.4%
    2026-07-14 133,137 0 348,501 38.2%
    2026-07-13 285,154 0 563,295 50.6%
    2026-07-10 371,920 0 558,594 66.6%
    2026-07-09 426,508 0 829,023 51.4%
    2026-07-08 431,407 0 1,017,236 42.4%
    2026-07-07 578,904 117 1,822,974 31.8%
    2026-07-06 201,400 0 559,711 36.0%
    2026-07-02 276,272 1 493,841 55.9%
    2026-07-01 374,384 550 817,176 45.8%
    2026-06-30 919,195 501 2,760,046 33.3%
    2026-06-29 586,561 5,253 1,989,789 29.5%
    2026-06-26 467,069 0 1,238,442 37.7%
    Showing 1–50 of 63 days
    Key facts CIK 1515673 CUSIP 90400D108 13F (30d) 220 filings 219 filers Visit website Investor relations