United Microelectronics Corporation (NEW) (UMC)
Showing Closing Date Range from Sep 30 to Oct 28, 2026 compared to Sep 1 to Sep 29, 2026.
Compare Last 28 Days with Previous Period
Investor Relations:umc.com
Current Period Close
$19.45
Sep 30, 2026 - Oct 28, 2026
Previous Period Close
$24.72
Sep 01, 2026 - Sep 29, 2026
Net Comparison Delta
$-5.27 (-21.32%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(20 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Oct 27, 2026 | $19.45 | - | - | - |
| Oct 26, 2026 | $19.18 | Sep 29, 2026 | $24.72 | -22.41% |
| Oct 23, 2026 | $18.89 | Sep 28, 2026 | $23.85 | -20.80% |
| Oct 22, 2026 | $18.53 | Sep 25, 2026 | $24.31 | -23.78% |
| Oct 21, 2026 | $19.82 | Sep 23, 2026 | $24.68 | -19.69% |
| Oct 20, 2026 | $19.67 | Sep 22, 2026 | $25.77 | -23.67% |
| Oct 19, 2026 | $20.08 | Sep 21, 2026 | $25.43 | -21.04% |
| Oct 16, 2026 | $19.82 | Sep 18, 2026 | $24.61 | -19.46% |
| Oct 15, 2026 | $20.92 | Sep 17, 2026 | $24.47 | -14.51% |
| Oct 14, 2026 | $21.40 | Sep 16, 2026 | $22.53 | -5.02% |
| Oct 13, 2026 | $22.39 | Sep 15, 2026 | $21.61 | +3.61% |
| Oct 12, 2026 | $22.55 | Sep 14, 2026 | $21.90 | +2.97% |
| Oct 09, 2026 | $22.96 | Sep 11, 2026 | $22.64 | +1.41% |
| Oct 08, 2026 | $22.82 | Sep 10, 2026 | $22.12 | +3.16% |
| Oct 07, 2026 | $23.31 | Sep 09, 2026 | $22.69 | +2.73% |
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