SK Hynix beat rival Samsung Electronics in operating profit for the first time in 2025, as it retained its lead in high-bandwidth memory used in artificial intelligence chips. The two South Korean memory makers went head-to-head this week, with SK Hynix reporting earnings on Wednesday and Samsung on Thursday morning local time. SK Hynix posted a record operating profit of 47.2 trillion won for the full year, surpassing Samsung's 43.6 trillion won. The comparison underscores SK Hynix's ascension