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VIR · Vir Biotechnology, Inc.

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$9.24 +0.24 (+2.67%) At close · Aug 14
Market Cap
$1.56B
Shares
169.22M

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
19,426,891 +2.0% vs reported
The latest estimate appears in the chart below. Official release expected Aug 25. Methodology
Short Squeeze Score
75/100
Short interest 11.3% of shares — P92 Days to cover 12.2 — P92 Price vs VWAP -0.5% — P43 Short-volume trend +3.5% — P64 Short interest change +3.2% — P66 Worst FTD 0.03% of shares — P62

Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-07-31). Weighted mean of the available factors (short interest 30%, days to cover 20%, price vs VWAP 15%, short-volume trend 15%, short-interest change 10%, fails-to-deliver 10%) plus catalyst boosts (price spike, volume surge, earnings within days), capped at +20 and clamped to 100.

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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 19,040,209 18,452,974 +587,235 12.24
    2026-07-15 18,452,974 19,192,724 -739,750 11.97
    2026-06-30 19,192,724 18,082,921 +1,109,803 5.98
    2026-06-15 18,082,921 18,316,762 -233,841 11.93
    2026-05-29 18,316,762 16,833,002 +1,483,760 10.81
    2026-05-15 16,833,002 16,117,209 +715,793 10.95
    2026-04-30 16,117,209 16,811,002 -693,793 9.74
    2026-04-15 16,811,002 16,841,179 -30,177 8.79
    2026-03-31 16,841,179 15,439,503 +1,401,676 7.69
    2026-03-13 15,439,503 13,677,336 +1,762,167 3.67
    2026-02-27 13,677,336 12,779,376 +897,960 1.76
    2026-02-13 12,779,376 12,228,838 +550,538 8.75
    2026-01-30 12,228,838 11,995,546 +233,292 6.03
    2026-01-15 11,995,546 11,747,085 +248,461 6.35
    2025-12-31 11,747,085 11,149,646 +597,439 6.40
    2025-12-15 11,149,646 11,110,359 +39,287 5.66
    2025-11-28 11,110,359 10,992,709 +117,650 6.96
    2025-11-14 10,992,709 9,581,029 +1,411,680 7.99
    2025-10-31 9,581,029 10,940,671 -1,359,642 6.21
    2025-10-15 10,940,671 10,948,379 -7,708 7.71
    2025-09-30 10,948,379 11,852,892 -904,513 9.22
    2025-09-15 11,852,892 11,924,295 -71,403 9.59
    2025-08-29 11,924,295 11,487,884 +436,411 6.45
    Showing 1–23 of 23 settlements
    Key facts CIK 1706431 CUSIP 92764N102 13F (30d) 229 filings 226 filers Visit website Investor relations

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