A Motley Fool analyst predicts Taiwan Semiconductor Manufacturing and Broadcom will reach a $3 trillion market capitalization by the end of 2027, joining Amazon and Microsoft in that valuation tier. Taiwan Semiconductor, currently valued at $2.2 trillion, is investing an additional $100 billion in its Arizona facility to meet AI-driven demand, while Broadcom, valued at $2 trillion, expects its AI semiconductor revenue to surpass $100 billion next year. The analyst cites projected revenue growth of 42% in 2026 and 33% in 2027 for Taiwan Semiconductor, and Wall Street estimates of $19.49 earnings per share for Broadcom by fiscal 2027, as supporting the path to the $3 trillion mark.