TSMC Posts Record Profits — Then Its Stock Fell Anyway

TSMC just reported the kind of quarter that should make headlines for all the right reasons: $40.2 billion in revenue, up 36% year-over-year, and net profit surging 77%. Instead, the stock dropped roughly 2–4%. The reason isn't what TSMC earned — it's what the company plans to spend.

The capex spike

Management raised its 2026 capital expenditure guidance to $60–64 billion, up from a previous range of $52–56 billion. To put that in context: TSMC is now planning to spend more on factories and equipment in a single year than it earns in an entire quarter. According to TSMC Q2 2026 earnings: Record profit, CEO C.C. Wei's $100 billion Arizona commitment sits at the center of that bet — a long-term conviction play that comes with real near-term margin pain.

The gross margin picture is what unnerved Wall Street. TSMC guided Q3 gross margins at 65–67%, falling short of what analysts had priced in. Overseas fab costs are expected to dilute margins by 2–4%, and ramping the next-generation N2 process adds another 3–4% hit. As TSMC Lifts 2026 Capex to $64 Billion notes, much of the earnings upside was already baked into the stock price — so the margin miss landed hard.

AI demand, but at what cost

The backdrop here matters. Nvidia has overtaken Apple as TSMC's largest customer in 2026, driven by relentless demand for AI chips going into data centers. That shift — from smartphone-led cycles to a data center arms race — is exactly why TSMC keeps raising its spending targets. The question investors are now asking out loud: can the hyperscalers (Microsoft, Google, Amazon, Meta) monetize their trillion-dollar AI infrastructure bets fast enough to justify this pace of chipmaking investment?

The sell-off spread beyond TSMC. The Nasdaq 100 dropped 1.4% the same day, and the broader semiconductor sector has fallen roughly 19% from its June peak. It's a "sell the fundamentals" pattern — profit growth is real, but the market is no longer treating AI infrastructure spending as automatically bullish.

The outlook

TSMC remains the indispensable manufacturer for the most advanced chips on the planet. No other foundry produces at the scale or node sophistication it does. But the profit growth story through 2027–28 may look bumpier than the last two years. Margins face sustained pressure from overseas expansion and new process ramps, and investors want evidence that the AI end-products being built on TSMC silicon are generating real returns — not just more construction reports.