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BIB · ProShares Ultra Nasdaq Biotechnology · Short Interest ETF

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$117.41 -5.72 (-4.65%) At close · Nov 12
Volume · Nov 12 6119 Avg daily vol (3M) 9750

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 →

BIB Latest Reported Short Interest

FINRA reported 10,116 BIB shares sold short as of the October 30, 2026 settlement date, an increase of 3,484 shares. Days to cover was 1.10 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
    2026-11-30 Scheduled
    FINRA publishes Dec 9
    		 — — — —
    2026-11-13 Scheduled
    FINRA publishes Nov 24
    		 — — — —
    2026-10-30 10,116 6,632 +3,484 1.10
    2026-10-15 6,632 7,709 -1,077 1.00
    2026-09-30 7,709 4,147 +3,562 1.30
    2026-09-15 4,147 8,812 -4,665 1.00
    2026-08-31 8,812 15,453 -6,641 1.00
    2026-08-14 15,453 4,045 +11,408 1.66
    2026-07-31 4,045 2,604 +1,441 1.00
    2026-07-15 2,604 12,632 -10,028 1.00
    2026-06-30 12,632 5,190 +7,442 1.00
    2026-06-15 5,190 4,879 +311 1.00
    2026-05-29 4,879 9,417 -4,538 1.00
    2026-05-15 9,417 12,351 -2,934 1.00
    2026-04-30 12,351 10,553 +1,798 1.00
    2026-04-15 10,553 11,115 -562 1.17
    2026-03-31 11,115 11,805 -690 1.05
    2026-03-13 11,805 19,619 -7,814 1.00
    2026-02-27 19,619 17,197 +2,422 2.93
    2026-02-13 17,197 21,087 -3,890 1.79
    2026-01-30 21,087 29,246 -8,159 1.63
    2026-01-15 29,246 27,298 +1,948 1.82
    2025-12-31 27,298 28,385 -1,087 2.54
    2025-12-15 28,385 40,112 -11,727 1.85
    2025-11-28 40,112 26,323 +13,789 1.64
    2025-11-14 26,323 9,238 +17,085 1.22

    Full FINRA short interest reporting calendar

    Showing 1–24 of 24 settlements