UMC is trading at $29.25 (4.6%) up in after-hours trading, extending a sharp multi-day rebound in semiconductor names. - The move follows a 6.7% gain during the regular trading session on June 24, 2026. - The jump is supported by positive company-specific developments including May 2026 net sales up 17.78% year over year, healthy 79% first-quarter utilization, and plans to raise wafer prices in the second half of 2026. - The stock continues to recover alongside other major industry players after a period of heightened market fluctuations.