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IWB · iShares Russell 1000 ETF · Short Interest ETF

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$419.84 +1.55 (+0.37%) At close · Oct 20
Volume · Oct 20 652.45K Avg daily vol (3M) 485.84K

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 →

IWB Latest Reported Short Interest

FINRA reported 1,554,113 IWB shares sold short as of the September 30, 2026 settlement date, an increase of 137,732 shares. Days to cover was 2.85 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 1,554,113 1,416,381 +137,732 2.85
    2026-09-15 1,416,381 1,261,629 +154,752 3.52
    2026-08-31 1,261,629 1,336,029 -74,400 2.61
    2026-08-14 1,336,029 1,209,408 +126,621 2.20
    2026-07-31 1,209,408 1,277,916 -68,508 2.61
    2026-07-15 1,277,916 1,468,008 -190,092 2.84
    2026-06-30 1,468,008 1,498,834 -30,826 1.91
    2026-06-15 1,498,834 1,351,497 +147,337 2.35
    2026-05-29 1,351,497 1,200,615 +150,882 1.93
    2026-05-15 1,200,615 1,199,750 +865 2.01
    2026-04-30 1,199,750 1,388,654 -188,904 1.19
    2026-04-15 1,388,654 1,429,132 -40,478 1.12
    2026-03-31 1,429,132 1,903,230 -474,098 1.00
    2026-03-13 1,903,230 1,310,462 +592,768 1.05
    2026-02-27 1,310,462 1,533,458 -222,996 1.00
    2026-02-13 1,533,458 1,263,346 +270,112 1.21
    2026-01-30 1,263,346 1,783,158 -519,812 1.00
    2026-01-15 1,783,158 2,135,191 -352,033 1.12
    2025-12-31 2,135,191 2,077,893 +57,298 2.23
    2025-12-15 2,077,893 2,237,757 -159,864 1.49
    2025-11-28 2,237,757 2,582,498 -344,741 2.24
    2025-11-14 2,582,498 2,606,080 -23,582 2.39
    2025-10-31 2,606,080 3,170,620 -564,540 3.50

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements