Kospi surges 7% as SK Hynix earnings fuel AI stock rebound

South Korea's Kospi index jumped 6.6% on Wednesday following SK Hynix's record quarterly profit, which exceeded analyst forecasts by more than 7%. The memory chipmaker forecast shortages through at least 2030 and announced a $45 billion shareholder payout, reigniting investor appetite for AI-related stocks. U.S. premarket trading saw Micron and SanDisk rise over 4% as the rally extended beyond Seoul.