TSM: The $1.9 Trillion Chip Foundry Trades Within 3% of Its
Taiwan Semiconductor Manufacturing Company (NYSE: TSM) closed at $370.54 on February 21, 2026, just 2.5% below its 52-week high of $380 — and 176% above its 52-week low of $134.25. The world's most important semiconductor company now commands a $1.92 trillion market capitalisation, making it the eighth-most valuable publicly traded company on earth. TSMC's dominance is structural, not cyclical. The company fabricates roughly 90% of the world's most advanced chips — the 3nm and 5nm processors that power everything from Apple's iPhones to Nvidia's AI accelerators. In a year when global capital expenditure on data centres is forecast to exceed $650 billion, TSMC sits at the chokepoint of every dollar spent. Q4 2025 revenue hit NT$1.056 trillion ($32.5 billion), up 26% year-over-year, while gross margins expanded to 62.3% — a level that would make most software companies envious. But the stock's 35x trailing earnings multiple raises a fair question: how much of the AI boom is already priced in? With geopolitical risk in the Taiwan Strait, a massive capital expenditure programme approaching $40 billion annually, and a new 10% US tariff adding uncertainty, investors need to weigh TSMC's unrivalled competitive position against a valuation that leaves little room for disappointment.