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GERN · Geron Corp

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$1.47 -0.07 (-4.23%) At close · Aug 14
Market Cap
$944.44M
Shares
642.47M

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
77,995,192 +1.5% vs reported
The latest estimate appears in the chart below. Official release expected Aug 25. Methodology
Short Squeeze Score
76/100
Short interest 12.0% of shares — P93 Days to cover 9.9 — P89 Price vs VWAP +9.6% — P79 Short-volume trend +1.0% — P55 Short interest change +9.8% — P78 Worst FTD 0.00% of shares — P21

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 76,807,284 69,921,486 +6,885,798 9.90
    2026-07-15 69,921,486 80,219,249 -10,297,763 6.75
    2026-06-30 80,219,249 74,846,440 +5,372,809 4.70
    2026-06-15 74,846,440 71,765,644 +3,080,796 5.89
    2026-05-29 71,765,644 70,153,512 +1,612,132 7.61
    2026-05-15 70,153,512 75,696,666 -5,543,154 3.77
    2026-04-30 75,696,666 82,155,104 -6,458,438 5.52
    2026-04-15 82,155,104 76,666,335 +5,488,769 3.57
    2026-03-31 76,666,335 63,223,778 +13,442,557 4.17
    2026-03-13 63,223,778 60,621,875 +2,601,903 3.45
    2026-02-27 60,621,875 65,027,742 -4,405,867 2.91
    2026-02-13 65,027,742 58,456,685 +6,571,057 4.30
    2026-01-30 58,456,685 70,452,831 -11,996,146 4.64
    2026-01-15 70,452,831 71,256,970 -804,139 7.45
    2025-12-31 71,256,970 76,015,555 -4,758,585 11.61
    2025-12-15 76,015,555 77,376,655 -1,361,100 10.25
    2025-11-28 77,376,655 77,603,709 -227,054 11.02
    2025-11-14 77,603,709 85,259,940 -7,656,231 6.99
    2025-10-31 85,259,940 86,917,382 -1,657,442 13.95
    2025-10-15 86,917,382 89,775,024 -2,857,642 10.49
    2025-09-30 89,775,024 92,130,954 -2,355,930 12.03
    2025-09-15 92,130,954 88,536,749 +3,594,205 15.13
    2025-08-29 88,536,749 86,667,584 +1,869,165 15.24
    Showing 1–23 of 23 settlements
    Key facts CIK 886744 CUSIP 374163103 13F (30d) 250 filings 247 filers Visit website Investor relations

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