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OMER · Omeros Corp

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$17.19 -0.16 (-0.92%) At close · Aug 14
Market Cap
$1.24B
Shares
72.39M

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
15,602,570 +1.2% vs reported
The latest estimate appears in the chart below. Official release expected Aug 25. Methodology
Short Squeeze Score
100/100
Short interest 21.3% of shares — P99 Days to cover 9.9 — P89 Price vs VWAP +49.2% — P99 Short-volume trend -5.9% — P29 Short interest change +2.2% — P64 Worst FTD 0.32% of shares — P88 Price spike +10 Volume surge +10 Earnings soon +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 15,420,416 15,092,070 +328,346 9.87
    2026-07-15 15,092,070 15,136,140 -44,070 11.85
    2026-06-30 15,136,140 18,103,605 -2,967,465 5.61
    2026-06-15 18,103,605 16,271,790 +1,831,815 8.44
    2026-05-29 16,271,790 15,940,028 +331,762 9.05
    2026-05-15 15,940,028 15,789,527 +150,501 10.84
    2026-04-30 15,789,527 16,900,273 -1,110,746 13.09
    2026-04-15 16,900,273 17,069,802 -169,529 11.43
    2026-03-31 17,069,802 17,312,128 -242,326 18.78
    2026-03-13 17,312,128 17,289,620 +22,508 22.18
    2026-02-27 17,289,620 17,959,196 -669,576 21.18
    2026-02-13 17,959,196 17,661,898 +297,298 17.68
    2026-01-30 17,661,898 16,429,140 +1,232,758 10.44
    2026-01-15 16,429,140 13,247,185 +3,181,955 4.67
    2025-12-31 13,247,185 13,919,634 -672,449 2.60
    2025-12-15 13,919,634 13,350,021 +569,613 9.47
    2025-11-28 13,350,021 13,353,498 -3,477 7.80
    2025-11-14 13,353,498 12,155,081 +1,198,417 7.79
    2025-10-31 12,155,081 12,891,428 -736,347 4.20
    2025-10-15 12,891,428 12,660,129 +231,299 1.06
    2025-09-30 12,660,129 13,500,482 -840,353 12.38
    2025-09-15 13,500,482 13,144,548 +355,934 20.33
    2025-08-29 13,144,548 13,394,591 -250,043 13.16
    Showing 1–23 of 23 settlements
    Key facts CIK 1285819 CUSIP 682143102 13F (30d) 174 filings 167 filers Visit website Investor relations

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