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BIS · ProShares UltraShort Nasdaq Biotechnology · Short Interest ETF

Alerts for BIS

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$11.21 +0.18 (+1.61%) At close · Oct 22
Volume · Oct 22 12.46K Avg daily vol (3M) 8695

Shares sold short and not yet covered, reported twice monthly. Days to cover is the reported short position divided by average daily volume.

Pull short interest history through the short interest API or MCP →

BIS Latest Reported Short Interest

FINRA reported 5,405 BIS shares sold short as of the September 30, 2026 settlement date, a decrease of 150 shares. Days to cover was 1.00 based on FINRA's reported average daily volume.

Official FINRA short-interest data · share counts are restated for subsequent splits of this listing

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    • Short Interest History

    Settlement Date Current Position Previous Position Change Days to Cover
    2026-10-30 Scheduled
    FINRA publishes Nov 10
    		 — — — —
    2026-10-15 Scheduled
    FINRA publishes Oct 26
    		 — — — —
    2026-09-30 5,405 5,555 -150 1.00
    2026-09-15 5,555 5,794 -239 1.00
    2026-08-31 5,794 10,400 -4,606 1.00
    2026-08-14 10,400 7,292 +3,108 2.35
    2026-07-31 7,292 4,599 +2,693 1.51
    2026-07-15 4,599 6,523 -1,924 1.00
    2026-06-30 6,523 4,157 +2,366 1.06
    2026-06-15 4,157 6,057 -1,900 1.00
    2026-05-29 6,057 8,070 -2,013 1.10
    2026-05-15 8,070 11,386 -3,316 1.00
    2026-04-30 11,386 7,116 +4,270 1.00
    2026-04-15 7,116 7,830 -714 1.00
    2026-03-31 7,830 7,177 +653 1.00
    2026-03-13 7,177 6,140 +1,037 1.31
    2026-02-27 6,140 5,460 +680 2.71
    2026-02-13 5,460 10,514 -5,054 1.00
    2026-01-30 10,514 5,280 +5,234 1.16
    2026-01-15 5,280 3,309 +1,971 1.00
    2025-12-31 3,309 3,300 +9 1.00
    2025-12-15 3,300 2,900 +400 1.00
    2025-11-28 2,900 6,986 -4,086 1.00
    2025-11-14 6,986 4,460 +2,526 1.00
    2025-10-31 4,460 3,446 +1,014 1.84

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements