stockNYSE: UMC • 28 Days Updates
United Microelectronics Corporation (NEW) (UMC)
Showing Closing Date Range from Sep 9 to Oct 7, 2026.
United Microelectronics (UMC) manufactures semiconductor products for the foundry market, trading among NYSE Stocks. Shares last closed at $23.31, moving -4.82% over the past week and +2.73% across 28 days. Longer term, the stock is -6.23% over 3 months, +139.32% over 6 months and +219.75% over 12 months. Comparable industrial and technology stocks CNH (CNH Industrial N.V) (-10.36%), SLB (SLB) (-15.93%), UWMC (UWM) (-17.52%), CVX (Chevron) (-4.05%) and STM (STMicroelectronics N.V) (+8.98%) moved over the same 28-day stretch, for comparison.
Investor Relations:umc.com
Price & Performance Trajectory
United Microelectronics Corporation (NEW)NYSE: UMC
Latest Close
$23.31
28 Days Updates Trajectory
Showing Closing Date Range from Sep 9 to Oct 7, 2026.Loading trajectory chart...
Click metric scorecards below to toggle price, return %, range & volume curvesUMC session performance
✓ Latest Close USD
$23.31
Latest session close
+$0.62vs period start
Period Return % % GAIN
+2.73%
Net period trajectory
Cumulative ReturnNormalized
High / Low Range SPREAD
$26.37 / $21.59
Period range envelope
$4.78channel spread
Total Volume SHARES
247.52M
Period turnover
Avg: 12.38M/dLiquidity
Historical Session Ledger
Daily open, high, low, and close prices with volume and period returns.
Historical Quotes & Breakdown(20 dates)
| Date | Close (USD) | Return % | High | Low | Volume |
|---|---|---|---|---|---|
| Oct 07, 2026 | $23.31 | +0.52% | $23.34 | $22.85 | 8.05M |
| Oct 06, 2026 | $23.19 | -3.05% | $23.67 | $23.05 | 15.05M |
| Oct 05, 2026 | $23.92 | -8.95% | $24.15 | $23.26 | 31.82M |
| Oct 02, 2026 | $26.27 | +4.20% | $26.37 | $25.52 | 10.20M |
| Oct 01, 2026 | $25.21 | +2.94% | $25.34 | $24.67 | 7.74M |
| Sep 30, 2026 | $24.49 | -0.93% | $24.69 | $24.35 | 7.09M |
| Sep 29, 2026 | $24.72 | +3.65% | $25.02 | $24.11 | 10.91M |
| Sep 28, 2026 | $23.85 | -1.89% | $24.21 | $23.42 | 7.09M |
| Sep 25, 2026 | $24.31 | +0.87% | $24.54 | $24.12 | 6.33M |
| Sep 23, 2026 | $24.68 | -4.23% | $25.38 | $24.41 | 10.87M |
| Sep 22, 2026 | $25.77 | +1.34% | $25.80 | $25.13 | 8.42M |
| Sep 21, 2026 | $25.43 | +3.33% | $25.63 | $24.64 | 11.26M |
| Sep 18, 2026 | $24.61 | +0.57% | $24.71 | $23.88 | 30.09M |
| Sep 17, 2026 | $24.47 | +8.61% | $24.55 | $23.30 | 17.76M |
| Sep 16, 2026 | $22.53 | +4.26% | $22.84 | $22.25 | 11.22M |
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