UMC
UNITED MICROELECTRONICS CORPCompany with tickers: UMC
CIK
1033767
CUSIP
910873405
Shares Outstanding
2,515,704,924
Price
Holdings
Short Volume
Short Interest
Fails to Deliver
SEC Filings
Earnings Calls
Insider Trading
Congress Trades
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
| 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 |
| 2025-06-30 | 61,885,859 | 69,856,712 | -7,970,853 | 6.77 |
| 2025-06-13 | 69,856,712 | 74,690,452 | -4,833,740 | 7.07 |
| 2025-05-30 | 74,690,452 | 72,571,492 | +2,118,960 | 8.98 |
| 2025-05-15 | 72,571,492 | 69,484,400 | +3,087,092 | 6.57 |
| 2025-04-30 | 69,484,400 | 77,456,034 | -7,971,634 | 5.68 |
| 2025-04-15 | 77,456,034 | 79,450,442 | -1,994,408 | 4.29 |