TSMC reported NT$511.86 billion in September revenue on Thursday, completing a third quarter in which monthly sales stayed near record levels as demand for advanced chips tied to artificial intelligence remained elevated. September revenue was down just 0.6% from August's NT$514.81 billion record but 54.6% above the NT$330.98 billion reported in September 2025, according to TSMC's October 8 Form 6-K. The September number matters because it completes the first hard revenue read for TSMC's third quarter. Adding July's NT$467.58 billion, August's NT$514.81 billion and September's NT$511.86 billion gives quarterly revenue of approximately NT$1.494 trillion. That is about 17.6% higher than the roughly NT$1.270 trillion generated across April, May and June and about 50% higher than a year earlier.

September Stayed Within 0.6% of TSMC's August Record

August had been TSMC's strongest month on record, with revenue rising 10.1% from July and 53.3% year on year to NT$514.81 billion. September therefore looks more like stabilization at a very high level than a reversal. The NT$2.95 billion sequential decline represents less than 1% of monthly sales, while year-on-year growth actually accelerated slightly from August's 53.3% to 54.6%. That matters for investors watching whether the AI infrastructure cycle is beginning to lose momentum. TSMC manufactures the advanced processors used by customers including Nvidia, AMD and Apple, making its monthly revenue releases one of the highest-frequency demand signals available for the leading-edge semiconductor market. FinanceFeeds had already highlighted the setup after August, when TSMC's first month above NT$500 billion left September with substantial room against the company's Q3 guidance. September ultimately came in almost level with that record month rather than falling back toward the lower run rate seen earlier in the year.

TSMC Has Generated NT$3.899 Trillion in Nine Months

Revenue for January through September reached NT$3.89873 trillion, up 41.1% from NT$2.76296 trillion during the same period of 2025. The pace is particularly notable because growth has accelerated as the year progressed. September's 54.6% increase was well above the nine-month growth rate, while July, August and September together generated more than NT$1.49 trillion. That quarter alone accounted for roughly 38% of TSMC's entire first-nine-month revenue total. The mix behind that growth remains important. FinanceFeeds previously calculated that TSMC's Q2 revenue growth was being driven by both higher wafer volumes and a richer price and technology mix, with 3-nanometer and 5-nanometer nodes representing the majority of wafer revenue and 7nm-and-below reaching 77%. The September sales release does not provide a technology breakdown, so investors will have to wait for the quarterly report to determine whether that mix strengthened further during Q3.

What Does NT$1.494 Trillion Mean Against TSMC's Guidance?

TSMC guided in July for third-quarter revenue of US$44.6 billion to US$45.8 billion using an assumed exchange rate of NT$32 to the U.S. dollar. At that exact guidance exchange rate, the range translates mechanically to approximately NT$1.427 trillion to NT$1.466 trillion. The three published monthly revenue figures total NT$1.494 trillion, equivalent to approximately US$46.70 billion if the same NT$32 exchange assumption is applied. That arithmetic puts the monthly sales total about NT$28.6 billion, or roughly 2%, above the New Taiwan dollar equivalent of the top of TSMC's original range. But that is not the same thing as TSMC formally reporting a guidance beat. The company will publish the quarter under its financial-reporting framework using the actual period results and exchange-rate treatment. The clean beat-or-miss comparison therefore belongs with the October earnings release rather than Thursday's monthly-sales filing.

October 15 Will Answer the Margin Question

TSMC's investor calendar confirms that third-quarter results and its earnings conference are scheduled for Thursday, October 15, at 2:00 p.m. Taiwan time, or 2:00 a.m. ET. Revenue is only one part of what investors will be watching. For Q3, TSMC guided for a gross margin of 65% to 67% and an operating margin of 56% to 58%. Those numbers will show whether record-scale sales are translating into the same degree of operating leverage while the company simultaneously ramps its 2-nanometer process and expands production outside Taiwan. Pricing is another part of the equation. FinanceFeeds reported in July that TSMC plans price increases of as much as 10% across parts of its manufacturing portfolio in 2027, with additional premiums possible for incremental high-performance computing capacity. That means the October 15 report should help separate three drivers that monthly revenue alone cannot: underlying wafer demand, the contribution from higher-value leading-edge nodes and pricing.

TSM Stock Fell Even as the Revenue Run Rate Held Near a Record

TSMC's Taiwan-listed shares fell 1.35% before the September sales figures were released. In U.S. trading, the TSM ADR was also down roughly 1% during Thursday morning, trading around $467 after closing Wednesday at $472.20. The muted reaction underscores the hurdle embedded in TSM stock after the AI-driven rally. Strong revenue growth is no longer enough on its own; investors are increasingly judging whether growth can remain exceptional while capital spending rises, advanced-node production expands and the cost of overseas manufacturing weighs on margins. September nevertheless removes one immediate concern. TSMC's record August was not followed by a sharp monthly reversal. Sales remained above NT$500 billion for a second consecutive month and finished the quarter at a level that keeps the AI-chip demand story intact heading into the fuller October 15 earnings test.