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IBB · iShares Biotechnology ETF

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$198.26 -0.68 (-0.34%) At close · Aug 14

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

Model estimate

Expected Aug 14 short interest

as of Aug 14
11,319,998 +12.7% vs reported
The latest estimate appears in the chart below. Official release expected Aug 25. Methodology
1M 3M 6M 1Y 5Y All
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    • Short Interest History

    Settlement Date Current Position Previous Position Change Days to Cover
    2026-08-31 Scheduled
    FINRA publishes Sep 10
    		 — — — —
    2026-08-14 Scheduled
    FINRA publishes Aug 25
    		 — — — —
    2026-07-31 10,042,470 11,909,708 -1,867,238 7.06
    2026-07-15 11,909,708 12,108,341 -198,633 6.42
    2026-06-30 12,108,341 12,435,411 -327,070 7.08
    2026-06-15 12,435,411 13,243,596 -808,185 8.73
    2026-05-29 13,243,596 13,009,363 +234,233 8.78
    2026-05-15 13,009,363 13,267,269 -257,906 9.67
    2026-04-30 13,267,269 12,584,040 +683,229 9.08
    2026-04-15 12,584,040 13,298,650 -714,610 9.39
    2026-03-31 13,298,650 14,315,391 -1,016,741 7.84
    2026-03-13 14,315,391 14,892,958 -577,567 7.65
    2026-02-27 14,892,958 15,059,984 -167,026 9.32
    2026-02-13 15,059,984 12,721,468 +2,338,516 6.94
    2026-01-30 12,721,468 12,700,561 +20,907 7.48
    2026-01-15 12,700,561 12,595,742 +104,819 6.17
    2025-12-31 12,595,742 13,378,601 -782,859 8.52
    2025-12-15 13,378,601 12,218,668 +1,159,933 8.09
    2025-11-28 12,218,668 12,364,326 -145,658 4.09
    2025-11-14 12,364,326 11,794,089 +570,237 4.81
    2025-10-31 11,794,089 11,702,478 +91,611 6.03
    2025-10-15 11,702,478 12,552,874 -850,396 5.00
    2025-09-30 12,552,874 10,834,129 +1,718,745 6.00
    2025-09-15 10,834,129 10,432,887 +401,242 5.52
    2025-08-29 10,432,887 10,469,856 -36,969 8.22
    2025-08-15 10,469,856 12,122,091 -1,652,235 6.13
    Showing 1–24 of 24 settlements
    Key facts CIK 918509 CUSIP 464287556 13F (30d) 307 filings 304 filers

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