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SIOO · Short Interest ETF

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$19.60 -0.05 (-0.26%) At close · Oct 23
Volume · Oct 23 14.96K Avg daily vol (3M) 10.93K

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 →

SIOO Latest Reported Short Interest

FINRA reported 8,427 SIOO shares sold short as of the September 30, 2026 settlement date, a decrease of 2,510 shares. Days to cover was 1.87 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 8,427 10,937 -2,510 1.87
    2026-09-15 10,937 12,229 -1,292 1.04
    2026-08-31 12,229 26,971 -14,742 1.38
    2026-08-14 26,971 23,882 +3,089 1.66
    2026-07-31 23,882 23,513 +369 2.53
    2026-07-15 23,513 16,286 +7,227 2.75
    2026-06-30 16,286 18,730 -2,444 1.34
    2026-06-15 18,730 20,767 -2,037 2.23
    2026-05-29 20,767 21,860 -1,093 1.49
    2026-05-15 21,860 25,598 -3,738 1.03
    2026-04-30 25,598 2,665 +22,933 1.49
    2026-04-15 2,665 6,309 -3,644 1.00
    2026-03-31 6,309 1,659 +4,650 1.00
    2026-03-13 1,659 1,532 +127 1.00
    2026-02-27 1,532 3,903 -2,371 1.00
    2026-02-13 3,903 4,941 -1,038 1.00
    2026-01-30 4,941 9,439 -4,498 1.00
    2026-01-15 9,439 13,122 -3,683 1.29
    2025-12-31 13,122 4,768 +8,354 1.64
    2025-12-15 4,768 0 +4,768 2.32

    Full FINRA short interest reporting calendar

    Showing 1–20 of 20 settlements