Warren Buffett Bought the World's Most Dominant AI Company — Then Sold It Within 6 Months

Warren Buffett’s brief $4.1 billion investment in Taiwan Semiconductor Manufacturing (TSM) and full exit within two quarters underscores how geopolitical risk can outweigh business fundamentals. The article highlights TSM’s critical role — producing roughly 90% of the world’s most advanced semiconductors and acting as a choke point for AI chip supply — and notes Buffett sold primarily because he “didn’t like its location” (Taiwan) amid U.S.–China tensions. The piece frames the move as both prudent risk management and a costly missed opportunity given TSM’s centrality to the AI boom. Market impact: investors should weigh outsized operational dominance against concentrated geopolitical exposure when valuing semiconductor and AI-related stocks. The article references major AI ecosystems including NVIDIA, AMD, Broadcom, Amazon, Microsoft and Alphabet as dependent on TSM’s capacity.