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PACB · Pacific Biosciences Of California, Inc. · Short Volume

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$2.14 +0.18 (+9.18%) At close · Oct 21
Russell 2000 member Rebalance outlook locked
Market Cap
$609.23M
Shares
310.83M
Volume · Oct 21 13.5M Avg daily vol (3M) 11.02M

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 4,520,069 6,615 6,847,107 66.0%
    2026-10-20 2,602,413 6,793 5,194,479 50.1%
    2026-10-19 1,150,607 274,236 2,585,786 44.5%
    2026-10-16 2,425,854 182,378 4,725,420 51.3%
    2026-10-15 1,538,591 26,823 5,929,588 25.9%
    2026-10-14 817,844 7,880 3,799,515 21.5%
    2026-10-13 859,830 138,226 5,160,731 16.7%
    2026-10-12 1,473,522 175,308 5,027,461 29.3%
    2026-10-09 2,223,648 239,946 5,488,518 40.5%
    2026-10-08 3,295,310 288,031 9,482,077 34.8%
    2026-10-07 4,404,979 326,520 8,831,848 49.9%
    2026-10-06 12,271,023 590,872 24,027,293 51.1%
    2026-10-05 4,405,697 608 12,557,349 35.1%
    2026-10-02 4,992,257 22,668 11,675,374 42.8%
    2026-10-01 5,933,536 16,111 12,485,782 47.5%
    2026-09-30 14,810,678 65,082 38,212,697 38.8%
    2026-09-29 2,490,002 6,580 7,288,076 34.2%
    2026-09-28 2,313,015 23,896 9,037,745 25.6%
    2026-09-25 1,534,752 75,961 4,111,151 37.3%
    2026-09-24 1,851,344 1,070 4,639,720 39.9%
    2026-09-23 1,278,035 635 2,329,938 54.9%
    2026-09-22 1,099,928 3,642 3,719,135 29.6%
    2026-09-21 1,020,816 37,952 2,659,324 38.4%
    2026-09-18 698,655 870 1,550,729 45.1%
    2026-09-17 1,727,059 115,102 3,217,460 53.7%
    2026-09-16 859,623 15,086 1,907,533 45.1%
    2026-09-15 1,257,096 28,103 2,742,377 45.8%
    2026-09-14 933,814 253 2,415,532 38.7%
    2026-09-11 619,358 58 1,638,159 37.8%
    2026-09-10 1,404,790 4,902 2,602,892 54.0%
    2026-09-09 941,954 0 2,034,373 46.3%
    2026-09-08 865,820 5,226 1,925,009 45.0%
    2026-09-04 586,749 4,966 1,171,271 50.1%
    2026-09-03 1,270,282 4,374 2,796,677 45.4%
    2026-09-02 1,049,858 0 2,170,665 48.4%
    2026-09-01 1,789,767 83,401 3,820,280 46.8%
    2026-08-31 1,628,964 90,771 3,848,111 42.3%
    2026-08-28 1,177,322 24,444 2,820,400 41.7%
    2026-08-27 1,082,518 0 3,304,468 32.8%
    2026-08-26 1,429,942 14,533 3,257,585 43.9%
    2026-08-25 2,636,214 37,656 9,331,277 28.3%
    2026-08-24 1,474,200 8,497 3,076,033 47.9%
    2026-08-21 1,236,448 11,647 3,650,898 33.9%
    2026-08-20 936,197 461 2,302,330 40.7%
    2026-08-19 1,544,571 869 6,096,348 25.3%
    2026-08-18 1,734,311 14,623 2,816,544 61.6%
    2026-08-17 1,726,868 0 3,554,565 48.6%
    2026-08-14 956,261 0 2,169,769 44.1%
    2026-08-13 1,155,690 8 3,112,918 37.1%
    2026-08-12 4,187,227 52,906 6,917,638 60.5%
    Showing 1–50 of 65 days
    Key facts CIK 1299130 CUSIP 69404D108 13F (30d) 19 filings 19 filers Visit website Investor relations