AI-driven rally pushes all three global memory chipmakers above trillion-dollar mark (Yonhap) SK hynix joined the $1 trillion market capitalization club on Wednesday, meaning the world’s three largest memory chipmakers are now all valued at more than $1 trillion amid the artificial intelligence-driven semiconductor rally.As of early trading, SK hynix shares were up 9.94 percent, or 204,000 won ($135.7), at 2.26 million won. The stock opened 11.06 percent higher at 2.279 million won, its intraday high during the morning session.At that level, SK hynix’s market capitalization reached about 1,600 trillion won ($1.06 trillion), lifting the company to 12th place globally by market value.The milestone means Samsung Electronics, SK hynix and Micron Technology are now all valued above $1 trillion following a sectorwide surge fueled by AI infrastructure spending.The rally accelerated after Micron shares jumped 19.29 percent overnight, pushing the US memory chipmaker’s valuation past the $1 trillion mark after UBS sharply raised its target price.UBS said Micron was evolving from a cyclical semiconductor company into a structurally higher-margin business, reflecting broader changes across the memory industry.Analysts said the sector, once dominated by boom-and-bust cycles driven by supply-demand imbalances, is undergoing a structural shift as AI demand tightens supply and encourages more long-term supply agreements spanning three to five years.Samsung Electronics became the first Korean company to surpass a $1 trillion valuation on May 6.