South Korea's SK Hynix forecast sales of its high-end semiconductors used in generative artificial intelligence chipsets would double this year after reporting a record quarterly profit that surpassed its bigger rival Samsung.

SK Hynix Inc.’s shares slid 4.7% after its record quarterly profit and modest capex plans failed to impress investors betting on insatiable AI demand for advanced memory chips.Nvidia Corp.’s main supplier of high-bandwidth memory reported a more than 20-fold jump in operating profit to 8.