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## Overview SK Hynix Inc. and Micron Technology Inc. have reportedly crossed $1 trillion in market capitalization for the first time, driven by investor bets that the AI boom will lead to a sustained revaluation of the memory chip industry (Bloomberg, May 27). The surge marks a structural shift in how markets value memory semiconductor producers. ## Key Developments - Both SK Hynix and Micron reportedly surpassed $1 trillion market cap simultaneously (Bloomberg, May 27) - The rally is described as driven by AI infrastructure demand, particularly for high-bandwidth memory (HBM) used in AI accelerators (Bloomberg, May 27) - The breakneck surge is described as "intensifying" rather than plateauing (Bloomberg, May 27) ## Investment Thesis Historically, memory chip companies traded at cyclical, commodity-like valuations. The AI era reportedly challenges this framework, as HBM and advanced DRAM are now considered scarce inputs to AI training and inference infrastructure — repositioning memory producers closer to the premium valuations of logic chip designers (Bloomberg, May 27). ## Competitive Landscape - Samsung Electronics remains the largest memory producer but faces labor cost pressure following its recent wage settlement - SK Hynix is reportedly the leading supplier of HBM to Nvidia - Micron is the primary US-domiciled producer, with strategic importance for US semiconductor independence ## Risks - Cyclical memory oversupply remains a structural risk if AI capex plateaus - Samsung's scale and potential catch-up in HBM could compress margins - Geopolitical risk: Korean facilities' exposure to regional security dynamics