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IRWD · Ironwood Pharmaceuticals Inc

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$4.41 +0.14 (+3.28%)
Russell 2000 member Rebalance outlook locked
Market Cap
$705.57M
Shares
165.24M

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

IRWD Latest Reported Short Interest

FINRA reported 18,066,382 IRWD shares sold short as of the August 14, 2026 settlement date, an increase of 1,523,979 shares. Days to cover was 6.44 based on FINRA's reported average daily volume.

Official FINRA short-interest data · share counts are restated for subsequent stock splits

IRWD Short Interest Forecast

Equibles' model estimates 17,888,185 shares sold short for the August 31, 2026 settlement, -1.0% versus the latest reported position, with a likely range of 16,409,377 to 19,435,561 shares. This model prediction uses FINRA data through August 31, 2026; FINRA's official release is expected September 10, 2026.

Model estimate

Expected Aug 31 short interest

as of Aug 31 Low confidence 57% chance it falls
17,888,185 -1.0% vs reported
Likely range 16,409,377 to 19,435,561 The latest estimate appears in the chart below. Official release expected Sep 10. Methodology
Short Squeeze Score
72/100
Short interest 10.9% of shares — P92 Days to cover 6.4 — P79 Price vs VWAP +5.5% — P75 Short-volume trend -5.2% — P31 Short interest change +9.2% — P75 Worst FTD 0.01% of shares — P51

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 18,066,382 16,542,403 +1,523,979 6.44
    2026-07-31 16,542,403 17,191,892 -649,489 10.04
    2026-07-15 17,191,892 16,230,028 +961,864 6.32
    2026-06-30 16,230,028 15,898,991 +331,037 5.65
    2026-06-15 15,898,991 15,018,969 +880,022 8.18
    2026-05-29 15,018,969 17,334,279 -2,315,310 6.00
    2026-05-15 17,334,279 17,266,421 +67,858 5.77
    2026-04-30 17,266,421 18,191,102 -924,681 10.51
    2026-04-15 18,191,102 17,904,692 +286,410 10.20
    2026-03-31 17,904,692 13,703,587 +4,201,105 4.67
    2026-03-13 13,703,587 12,917,285 +786,302 6.65
    2026-02-27 12,917,285 11,159,224 +1,758,061 3.24
    2026-02-13 11,159,224 9,464,516 +1,694,708 4.52
    2026-01-30 9,464,516 9,007,479 +457,037 3.52
    2026-01-15 9,007,479 8,147,450 +860,029 1.00
    2025-12-31 8,147,450 7,329,764 +817,686 3.22
    2025-12-15 7,329,764 7,464,531 -134,767 3.79
    2025-11-28 7,464,531 7,154,955 +309,576 2.75
    2025-11-14 7,154,955 4,762,545 +2,392,410 1.48
    2025-10-31 4,762,545 4,702,015 +60,530 4.03
    2025-10-15 4,702,015 5,166,794 -464,779 3.60
    2025-09-30 5,166,794 5,707,969 -541,175 3.67
    2025-09-15 5,707,969 6,063,890 -355,921 4.32

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements
    Key facts CIK 1446847 CUSIP 46333X108 13F (30d) 177 filings 174 filers Visit website Investor relations

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