UMC shares surge 10.55% after-hours on record December revenue and partnership with SST.

UMC surged 10.55% in after-hours trading following a record December revenue of NT$19.28 billion, a 1.7% annual increase, and a strategic partnership with SST, a Microchip Technology subsidiary, to advance automotive technology. The collaboration, coupled with a 2.3% year-overall revenue growth to NT$237.55 billion, reinforced market confidence in UMC’s semiconductor market position. Additionally, a partnership with Polar Semiconductor to expand U.S. 8-inch wafer production for automotive and defense sectors further bolstered investor sentiment. These developments aligned with the stock’s post-announcement rally, reflecting optimism over UMC’s growth trajectory and technological leadership. Unrelated news about United Methodist Church clergy retirements and church finances did not impact the stock’s movement.