TSMC just crossed the trillion-dollar mark. You can't talk about artificial intelligence or chip stocks without talking about Taiwan Semiconductor Manufacturing (TSM 0.58%), or TSMC as it's also known. The company invented the pure-play foundry business model in 1987, meaning it manufactures chips only for other chip companies rather than its own designs, and it's the dominant player in that industry today. Its market share of contract chip manufacturing is estimated at around 60%, and it makes roughly 90% ...