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FIX · Comfort Systems USA Inc

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$1,610.34 +30.15 (+1.91%) At close · Sep 4
S&P 500 member Russell 1000 member Rebalance outlook locked
Market Cap
$54.91B
Shares
35.19M

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

FIX Latest Reported Short Interest

FINRA reported 915,049 FIX shares sold short as of the August 14, 2026 settlement date, an increase of 219,128 shares. Days to cover was 2.42 based on FINRA's reported average daily volume.

Official FINRA short-interest data · share counts are restated for subsequent splits of this listing

FIX Short Interest Forecast

Equibles' model estimates 914,848 shares sold short for the August 31, 2026 settlement, -0.0% versus the latest reported position, with a likely range of 748,937 to 1,095,710 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 49% chance it rises
914,848 -0.0% vs reported
Likely range 748,937 to 1,095,710 The latest estimate appears in the chart below. Official release expected Sep 10. Methodology
Short Squeeze Score
44/100
Short interest 2.6% of shares — P56 Days to cover 2.4 — P42 Price vs VWAP -8.7% — P25 Short-volume trend -5.7% — P30 Short interest change +31.5% — P89 Worst FTD 0.00% of shares — P19

Peer-relative percentile rank across all listed securities 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
    		 — — — —
    2026-08-14 915,049 695,921 +219,128 2.42
    2026-07-31 695,921 839,258 -143,337 1.12
    2026-07-15 839,258 746,501 +92,757 1.93
    2026-06-30 746,501 786,903 -40,402 1.21
    2026-06-15 786,903 825,373 -38,470 1.70
    2026-05-29 825,373 898,803 -73,430 1.91
    2026-05-15 898,803 760,735 +138,068 2.34
    2026-04-30 760,735 760,531 +204 1.69
    2026-04-15 760,531 621,334 +139,197 2.27
    2026-03-31 621,334 669,099 -47,765 1.37
    2026-03-13 669,099 652,846 +16,253 1.52
    2026-02-27 652,846 646,648 +6,198 1.15
    2026-02-13 646,648 732,808 -86,160 1.62
    2026-01-30 732,808 801,544 -68,736 2.06
    2026-01-15 801,544 775,068 +26,476 1.77
    2025-12-31 775,068 796,621 -21,553 1.00
    2025-12-15 796,621 734,974 +61,647 1.69
    2025-11-28 734,974 655,811 +79,163 1.04
    2025-11-14 655,811 558,433 +97,378 1.72
    2025-10-31 558,433 619,281 -60,848 1.17
    2025-10-15 619,281 665,142 -45,861 2.04
    2025-09-30 665,142 732,031 -66,889 1.66
    2025-09-15 732,031 690,937 +41,094 1.80

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements
    Key facts CIK 1035983 CUSIP 199908104 13F (30d) 746 filings 733 filers Visit website Investor relations