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VMBS · VANGUARD MORTGAGE-BACKED SECURITIES INDEX FUND · Short Interest ETF

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$44.87 +0.08 (+0.18%) At close · Oct 20
Volume · Oct 20 2.44M Avg daily vol (3M) 1.95M

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 →

VMBS Latest Reported Short Interest

FINRA reported 3,512,650 VMBS shares sold short as of the September 30, 2026 settlement date, an increase of 693,669 shares. Days to cover was 1.24 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 3,512,650 2,818,981 +693,669 1.24
    2026-09-15 2,818,981 2,560,314 +258,667 1.74
    2026-08-31 2,560,314 3,112,709 -552,395 1.77
    2026-08-14 3,112,709 3,101,356 +11,353 2.75
    2026-07-31 3,101,356 1,069,571 +2,031,785 2.33
    2026-07-15 1,069,571 2,504,753 -1,435,182 1.00
    2026-06-30 2,504,753 1,671,594 +833,159 2.00
    2026-06-15 1,671,594 2,965,785 -1,294,191 1.31
    2026-05-29 2,965,785 2,438,204 +527,581 1.99
    2026-05-15 2,438,204 1,044,746 +1,393,458 1.75
    2026-04-30 1,044,746 3,022,967 -1,978,221 1.00
    2026-04-15 3,022,967 1,595,902 +1,427,065 1.70
    2026-03-31 1,595,902 335,913 +1,259,989 1.00
    2026-03-13 335,913 195,962 +139,951 1.00
    2026-02-27 195,962 803,903 -607,941 1.00
    2026-02-13 803,903 2,481,262 -1,677,359 1.00
    2026-01-30 2,481,262 2,654,038 -172,776 1.45
    2026-01-15 2,654,038 1,063,987 +1,590,051 1.00
    2025-12-31 1,063,987 1,120,333 -56,346 1.00
    2025-12-15 1,120,333 4,927,117 -3,806,784 1.00
    2025-11-28 4,927,117 3,386,142 +1,540,975 3.50
    2025-11-14 3,386,142 921,721 +2,464,421 1.97
    2025-10-31 921,721 734,014 +187,707 1.00

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements