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SEPN · Septerna, Inc.

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$38.91 -1.56 (-3.85%) At close · Aug 28
Russell 2000 member Rebalance outlook locked
Market Cap
$1.82B
Shares
46.68M

Shares sold short and not yet covered, reported twice monthly. Days to cover is the reported short position divided by average daily volume.

SEPN Short Interest Forecast

Equibles' model estimates 2,778,020 shares sold short for the August 31, 2026 settlement, -3.4% versus the latest reported position. This model prediction uses FINRA data through August 21, 2026; FINRA's official release is expected September 10, 2026.

Model estimate

Expected Aug 31 short interest

as of Aug 21
2,778,020 -3.4% vs reported
The latest estimate appears in the chart below. Official release expected Sep 10. Methodology
Short Squeeze Score
53/100
Short interest 6.2% of shares — P79 Days to cover 5.1 — P70 Price vs VWAP +4.5% — P68 Short-volume trend -30.6% — P3 Short interest change -18.1% — P16 Worst FTD 0.00% of shares — P25

Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-08-14). 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
    2026-09-15 Scheduled
    FINRA publishes Sep 24
    		 — — — —
    2026-08-31 Scheduled
    FINRA publishes Sep 10
    		 — — — —
    2026-08-14 2,874,690 3,507,965 -633,275 5.06
    2026-07-31 3,507,965 3,350,617 +157,348 14.15
    2026-07-15 3,350,617 3,154,131 +196,486 5.72
    2026-06-30 3,154,131 2,665,398 +488,733 5.28
    2026-06-15 2,665,398 2,617,322 +48,076 7.78
    2026-05-29 2,617,322 2,390,125 +227,197 9.51
    2026-05-15 2,390,125 2,067,671 +322,454 7.43
    2026-04-30 2,067,671 2,457,303 -389,632 5.44
    2026-04-15 2,457,303 2,176,719 +280,584 8.06
    2026-03-31 2,176,719 2,076,801 +99,918 8.73
    2026-03-13 2,076,801 1,848,804 +227,997 6.25
    2026-02-27 1,848,804 1,779,031 +69,773 5.61
    2026-02-13 1,779,031 1,924,987 -145,956 6.34
    2026-01-30 1,924,987 1,941,013 -16,026 7.66
    2026-01-15 1,941,013 1,427,098 +513,915 6.08
    2025-12-31 1,427,098 1,277,323 +149,775 5.54
    2025-12-15 1,277,323 1,477,425 -200,102 4.65
    2025-11-28 1,477,425 1,921,591 -444,166 3.65
    2025-11-14 1,921,591 2,025,667 -104,076 5.45
    2025-10-31 2,025,667 2,571,016 -545,349 7.72
    2025-10-15 2,571,016 3,074,377 -503,361 5.80
    2025-09-30 3,074,377 3,168,890 -94,513 11.49
    2025-09-15 3,168,890 3,082,422 +86,468 12.32

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements
    Key facts CIK 1984086 CUSIP 81734D104 13F (30d) 146 filings 142 filers Visit website Investor relations

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