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CERS · Cerus Corp

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$2.98 +0.14 (+4.93%) At close · Aug 14
Market Cap
$600.54M
Shares
201.52M

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
17,151,017 +14.6% vs reported
The latest estimate appears in the chart below. Official release expected Aug 25. Methodology
Short Squeeze Score
89/100
Short interest 7.4% of shares — P83 Days to cover 5.7 — P73 Price vs VWAP +9.1% — P78 Short-volume trend +16.4% — P92 Short interest change +9.3% — P77 Worst FTD 0.03% of shares — P58 Price spike +10

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 14,960,162 13,688,689 +1,271,473 5.71
    2026-07-15 13,688,689 12,738,396 +950,293 5.50
    2026-06-30 12,738,396 19,696,885 -6,958,489 4.14
    2026-06-15 19,696,885 10,766,701 +8,930,184 8.49
    2026-05-29 10,766,701 18,522,745 -7,756,044 4.24
    2026-05-15 18,522,745 11,273,044 +7,249,701 4.00
    2026-04-30 11,273,044 11,204,876 +68,168 10.51
    2026-04-15 11,204,876 11,119,137 +85,739 12.45
    2026-03-31 11,119,137 10,511,205 +607,932 6.30
    2026-03-13 10,511,205 7,781,596 +2,729,609 3.61
    2026-02-27 7,781,596 7,818,308 -36,712 5.69
    2026-02-13 7,818,308 6,725,116 +1,093,192 8.01
    2026-01-30 6,725,116 7,143,959 -418,843 5.93
    2026-01-15 7,143,959 6,714,909 +429,050 3.62
    2025-12-31 6,714,909 6,239,300 +475,609 4.85
    2025-12-15 6,239,300 5,838,160 +401,140 3.60
    2025-11-28 5,838,160 5,720,796 +117,364 4.46
    2025-11-14 5,720,796 5,222,244 +498,552 4.11
    2025-10-31 5,222,244 5,172,543 +49,701 4.72
    2025-10-15 5,172,543 6,191,774 -1,019,231 3.90
    2025-09-30 6,191,774 11,017,115 -4,825,341 3.37
    2025-09-15 11,017,115 6,904,159 +4,112,956 8.89
    2025-08-29 6,904,159 9,739,408 -2,835,249 6.88
    2025-08-15 9,739,408 7,006,354 +2,733,054 6.94
    Showing 1–24 of 24 settlements
    Key facts CIK 1020214 CUSIP 157085101 13F (30d) 180 filings 176 filers Visit website Investor relations

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