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XBI · State Street(R) SPDR(R) S&P(R) Biotech ETF · Short Volume ETF

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$153.24 +5.38 (+3.64%) At close · Oct 20
Volume · Oct 20 12.37M Avg daily vol (3M) 8.81M

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 %
    2026-10-20 3,366,987 1,686 4,208,475 80.0%
    2026-10-19 2,219,706 3,403 2,901,918 76.5%
    2026-10-16 2,264,771 2,750 4,284,285 52.9%
    2026-10-15 2,547,755 389 4,192,269 60.8%
    2026-10-14 2,198,485 1,425 3,154,073 69.7%
    2026-10-13 1,839,543 402 2,856,824 64.4%
    2026-10-12 1,533,042 1,754 2,090,180 73.3%
    2026-10-09 2,363,531 5,152 4,030,338 58.6%
    2026-10-08 3,442,416 2,132 4,396,411 78.3%
    2026-10-07 2,196,805 338 2,826,176 77.7%
    2026-10-06 3,664,040 4,370 5,697,345 64.3%
    2026-10-05 946,544 235 2,057,256 46.0%
    2026-10-02 2,399,133 4,891 3,283,039 73.1%
    2026-10-01 2,687,687 651 4,099,666 65.6%
    2026-09-30 1,383,937 1 2,583,594 53.6%
    2026-09-29 1,412,240 75 2,998,499 47.1%
    2026-09-28 1,599,392 52 2,390,403 66.9%
    2026-09-25 1,142,552 175 2,672,725 42.7%
    2026-09-24 2,588,147 1,053 4,902,146 52.8%
    2026-09-23 2,163,551 1,111 3,553,038 60.9%
    2026-09-22 1,705,205 3 2,187,706 77.9%
    2026-09-21 1,440,820 3,491 2,169,125 66.4%
    2026-09-18 1,721,796 100 3,150,417 54.7%
    2026-09-17 2,061,004 82 3,236,363 63.7%
    2026-09-16 1,453,218 7,560 2,763,070 52.6%
    2026-09-15 2,046,725 5,938 3,916,449 52.3%
    2026-09-14 1,011,417 120 1,778,558 56.9%
    2026-09-11 1,384,018 579 2,565,494 53.9%
    2026-09-10 1,474,810 706 3,932,420 37.5%
    2026-09-09 1,121,873 92 2,040,110 55.0%
    2026-09-08 2,184,684 625 3,087,605 70.8%
    2026-09-04 845,625 517 1,152,701 73.4%
    2026-09-03 1,379,137 11,612 1,857,691 74.2%
    2026-09-02 1,989,269 362 2,851,040 69.8%
    2026-09-01 1,630,101 10 2,313,332 70.5%
    2026-08-31 1,927,186 1,015 2,711,036 71.1%
    2026-08-28 1,995,372 3,205 3,420,914 58.3%
    2026-08-27 1,015,822 28 1,598,780 63.5%
    2026-08-26 1,908,871 2,420 2,779,352 68.7%
    2026-08-25 2,802,876 7,428 3,447,418 81.3%
    2026-08-24 2,200,803 1,941 2,878,742 76.5%
    2026-08-21 2,248,870 206 4,322,394 52.0%
    2026-08-20 3,260,726 17,276 5,471,197 59.6%
    2026-08-19 4,113,019 6,494 4,931,477 83.4%
    2026-08-18 1,447,193 1,487 1,736,595 83.3%
    2026-08-17 1,233,516 917 1,564,950 78.8%
    2026-08-14 1,080,782 284 1,663,271 65.0%
    2026-08-13 1,736,468 3,088 2,146,426 80.9%
    2026-08-12 1,489,688 212 1,975,960 75.4%
    2026-08-11 1,148,612 1,930 1,710,130 67.2%
    Showing 1–50 of 65 days