Taiwan Semiconductor Manufacturing Company Ltd. (TSM) is the world's largest dedicated semiconductor foundry, with about 70% market share in 2025. Founded in 1987, TSMC manufactures chips designed by customers including Apple, AMD, and NVIDIA. Its scale and advanced process technology support strong operating margins and a broad range of computing, mobile, automotive, and other semiconductor applications. The company went public in Taiwan in 1994 and listed ADRs in the United States in 1997. It employs more than 83,000 people.