UMC
United Microelectronics Corp
$23.84
+0.38 (+1.62%)
At close · Jul 14
Market Cap
$59.82B
Shares
2,509,286,774
Total shares sold short and not yet covered, reported to FINRA by broker-dealers and published twice a month (bi-monthly). Days to cover divides the short position by average daily volume; a high value (above 5) can signal short-squeeze potential.
Short Squeeze Score
56/100
Short interest 1.0% of shares — P40
Days to cover 1.3 — P35
Price vs VWAP +19.3% — P94
Short-volume trend +8.4% — P79
Short interest change +3.3% — P56
Worst FTD 0.02% of shares — P55
Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-06-30). 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.
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
| 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 |
| 2025-08-15 | 50,715,010 | 52,594,935 | -1,879,925 | 6.78 |
| 2025-07-31 | 52,594,935 | 56,492,585 | -3,897,650 | 6.57 |
| 2025-07-15 | 56,492,585 | 61,885,859 | -5,393,274 | 9.25 |
Showing 1–24 of 24 settlements
Key facts
CIK
1033767
CUSIP
910873405
13F (30d)
51 filings
26 filers
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