SK Hynix of South Korea and Micron of the United States are reported to have reached market capitalisations of at least $1 trillion, adding two more firms to the small group of companies valued above that threshold. Multiple outlets describe the move as part of a broader resurgence in valuations linked to demand for memory chips used in artificial intelligence and related technologies. Several reports note that Micron has topped the mark and that SK Hynix follows shortly afterward, with at least one outlet highlighting the speed of the jump. The reporting places the companies alongside other large technology firms already in the trillion-dollar club, including names such as Apple, Meta and Tesla. Bloomberg also frames the development as continuing momentum in the AI-led rally, while its additional segment content includes other unrelated news items. Across sources, the central point is that AI demand is supporting higher expectations for memory-chip makers, lifting their stock valuations to the trillion-dollar level.