TSMC posted September revenue of NT$511.86 billion ($16.03 billion), up 54.6% year over year — one of the sharpest monthly growth rates the foundry has recorded — as demand for advanced AI chips continues to absorb its leading-edge capacity.

The figure slipped 0.6% from August, a seasonal pause rather than a demand signal. Third-quarter revenue reached approximately NT$1.49 trillion, capping a quarter in which AI accelerators and high-performance computing silicon drove the bulk of bookings at the world's largest contract chipmaker.

What is driving the 54.6% surge?

The growth engine is unambiguous: advanced AI chips. TSMC fabricates the critical silicon for the AI buildout, and hyperscaler spending on accelerators keeps its leading-edge nodes effectively sold out. A 54.6% annual jump in monthly revenue, against a 0.6% month-over-month dip, shows the trajectory is structural rather than cyclical noise.

The third-quarter picture reinforces this. Roughly NT$1.49 trillion in quarterly revenue gives TSMC momentum heading into its earnings announcement next week, where investors will look for guidance on whether AI demand justifies continued capacity expansion.

Where does High NA EUV fit in?

TSMC has committed to using ASML's High NA EUV lithography technology, joining Samsung in adopting the next-generation production method. The commitment matters commercially: High NA scanners are the most expensive tools in semiconductor manufacturing, and adoption signals confidence that AI-driven demand will support the capital intensity of future nodes.

By moving alongside Samsung rather than waiting, TSMC positions itself to defend its process leadership as transistor scaling gets harder and tool costs climb.

How is the market responding?

The stock tells a more cautious story than the revenue line. TSMC traded at $472.17 as of Oct. 8 — just below its 52-week high of $485.80 — with a market capitalization of $2.11 trillion and a minimal one-day change of -0.01%.

Investor sentiment is balanced but slightly bearish: 70% of orders are sell and 30% buy. After the stock's run toward record territory, the market appears to be waiting for the earnings report to confirm that headline growth translates into margin and guidance strength.

What to watch next week

TSMC will announce third-quarter earnings next week. The key questions:

• Whether AI chip demand supports guidance for continued growth into 2027
• How the High NA EUV commitment factors into capital expenditure plans
• Whether the slightly bearish order flow reverses on confirmed results

With September revenue up 54.6% year over year, a committed path to High NA EUV alongside Samsung, and a $2.11 trillion valuation sitting just under its 52-week high, next week's earnings call will determine whether investors reprice the stock on confirmed AI demand or hold steady.