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UMC · United Microelectronics Corp

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$19.79 +0.72 (+3.78%) At close · Aug 28
Rebalance outlook locked
Market Cap
$49.63B
Shares
2.51B

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

UMC Short Interest Forecast

Equibles' model estimates 30,544,485 shares sold short for the August 31, 2026 settlement, +2.9% 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
30,544,485 +2.9% vs reported
The latest estimate appears in the chart below. Official release expected Sep 10. Methodology
Short Squeeze Score
44/100
Short interest 1.2% of shares — P42 Days to cover 2.6 — P44 Price vs VWAP -9.1% — P25 Short-volume trend +4.0% — P66 Short interest change -13.2% — P21 Worst FTD 0.03% of shares — P71

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 29,695,086 34,193,634 -4,498,548 2.58
    2026-07-31 34,193,634 20,511,587 +13,682,047 1.90
    2026-07-15 20,511,587 26,177,159 -5,665,572 1.24
    2026-06-30 26,177,159 25,331,010 +846,149 1.31
    2026-06-15 25,331,010 26,098,399 -767,389 1.35
    2026-05-29 26,098,399 26,916,938 -818,539 1.46
    2026-05-15 26,916,938 26,664,075 +252,863 1.64
    2026-04-30 26,664,075 25,829,756 +834,319 1.77
    2026-04-15 25,829,756 30,266,600 -4,436,844 3.07
    2026-03-31 30,266,600 34,188,481 -3,921,881 3.70
    2026-03-13 34,188,481 30,437,470 +3,751,011 3.98
    2026-02-27 30,437,470 31,611,829 -1,174,359 4.66
    2026-02-13 31,611,829 31,857,208 -245,379 2.99
    2026-01-30 31,857,208 48,007,369 -16,150,161 1.73
    2026-01-15 48,007,369 42,091,913 +5,915,456 4.07
    2025-12-31 42,091,913 45,911,313 -3,819,400 6.51
    2025-12-15 45,911,313 47,854,483 -1,943,170 4.91
    2025-11-28 47,854,483 50,568,495 -2,714,012 5.78
    2025-11-14 50,568,495 52,022,809 -1,454,314 6.06
    2025-10-31 52,022,809 48,044,444 +3,978,365 6.88
    2025-10-15 48,044,444 54,732,633 -6,688,189 5.69
    2025-09-30 54,732,633 56,642,297 -1,909,664 7.40
    2025-09-15 56,642,297 52,490,224 +4,152,073 13.76
    2025-08-29 52,490,224 50,715,010 +1,775,214 8.78

    Full FINRA short interest reporting calendar

    Showing 1–24 of 24 settlements
    Key facts CIK 1033767 CUSIP 910873405 13F (30d) 282 filings 265 filers Visit website Investor relations

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