Samsung Electronics’ semiconductor arm reported a bigger-than-expected 80 per cent surge in profit, suggesting global AI demand is helping drive a recovery at the Korean company’s most important business. The unit, which competes with SK Hynix and US-based Micron Technology, said it will focus next year on mass production of the next generation of high-bandwidth memory or HBM4 – designed to work in tandem with AI accelerators from Nvidia. The company echoed SK Hynix’s prediction that a spending...