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CMCSA · Comcast Corp · Short Interest

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$26.19 -0.14 (-0.53%)
S&P 500 member Nasdaq-100 member Russell 1000 member Rebalance outlook locked
Market Cap
$93.44B
Shares
3.55B

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

Pull short interest history through the short interest API or MCP →

CMCSA Latest Reported Short Interest

FINRA reported 75,479,151 CMCSA shares sold short as of the August 14, 2026 settlement date, an increase of 2,886,777 shares. Days to cover was 3.11 based on FINRA's reported average daily volume.

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

CMCSA Short Interest Forecast

Equibles' model estimates 73,851,984 shares sold short for the August 31, 2026 settlement, -2.2% versus the latest reported position, with a likely range of 66,008,853 to 82,153,808 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 62% chance it falls
73,851,984 -2.2% vs reported
Likely range 66,008,853 to 82,153,808 The latest estimate appears in the chart below. Official release expected Sep 10. Methodology
Short Squeeze Score
58/100
Short interest 2.1% of shares — P51 Days to cover 3.1 — P50 Price vs VWAP +8.9% — P82 Short-volume trend +9.3% — P80 Short interest change +4.0% — P66 Worst FTD 0.00% of shares — P22

Positioning score 58.4 + catalyst boost 0 (total capped at 100). This is a screening index, not a probability of a squeeze.

Method and coverage limits

Factor percentiles compare eligible primary operating-company stocks reporting short interest at the latest settlement date (2026-08-14). The weighted mean uses short interest 30%, days to cover 20%, price vs VWAP 15%, short-volume trend 15%, short-interest change 10%, and fails-to-deliver 10%. Missing factors redistribute their weight; incomplete coverage is not evidence of low risk. Price, volume, and earnings boosts add 10 each, capped at 20.

Shares outstanding are not free float. Borrow fees, utilization, lendable supply, recalls, and dealer inventory are not measured. Short-sale volume does not measure the change in open shorts; fails to deliver are not a borrow-cost measurement; price vs VWAP does not establish short sellers' entry prices. Earnings can move prices in either direction.

The weights are judgment-based, not calibrated to future squeeze outcomes. The separate options assessment below does not change this universe ranking.

Options positioning & squeeze sensitivity

Nearest expiration after today within 30 calendar days; same-day expirations and later maturities are excluded.

Open interest is incomplete, stale, or dated inconsistently; positioning totals are unavailable.

Open interest has both a buyer and a seller; it does not reveal dealer hedge direction. Gross gamma sums both calls and puts without netting and uses a local 1% price-change approximation. It measures sensitivity, not predicted buying or a squeeze probability.

Assessment prepared 2026-09-09 10:56 UTC. Options model values may come from a cached snapshot; their original computation time is not supplied. Open interest has its own effective date.

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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 75,479,151 72,592,374 +2,886,777 3.11
    2026-07-31 72,592,374 85,090,590 -12,498,216 1.97
    2026-07-15 85,090,590 88,032,735 -2,942,145 2.61
    2026-06-30 88,032,735 89,134,254 -1,101,519 1.67
    2026-06-15 89,134,254 83,844,940 +5,289,314 3.03
    2026-05-29 83,844,940 85,159,958 -1,315,018 2.72
    2026-05-15 85,159,958 86,769,384 -1,609,426 2.69
    2026-04-30 86,769,384 75,956,586 +10,812,798 2.52
    2026-04-15 75,956,586 79,003,913 -3,047,327 3.34
    2026-03-31 79,003,913 69,028,994 +9,974,919 1.74
    2026-03-13 69,028,994 77,168,966 -8,139,972 2.69
    2026-02-27 77,168,966 84,443,427 -7,274,461 3.29
    2026-02-13 84,443,427 79,270,043 +5,173,384 2.70
    2026-01-30 79,270,043 63,455,401 +15,814,642 1.80
    2026-01-15 63,455,401 65,237,230 -1,781,829 1.95
    2025-12-31 65,237,230 57,112,145 +8,125,085 1.54
    2025-12-15 57,112,145 56,004,727 +1,107,418 1.45
    2025-11-28 56,004,727 56,075,192 -70,465 1.84
    2025-11-14 56,075,192 52,675,477 +3,399,715 1.31
    2025-10-31 52,675,477 57,863,235 -5,187,758 1.68
    2025-10-15 57,863,235 59,962,493 -2,099,258 2.19
    2025-09-30 59,962,493 59,148,291 +814,202 2.00
    2025-09-15 59,148,291 52,716,116 +6,432,175 2.58

    Full FINRA short interest reporting calendar

    Showing 1–23 of 23 settlements
    Key facts CIK 1166691 CUSIP 20030N101 13F (30d) 847 filings 804 filers Visit website Investor relations