TSMC is betting bigger on America even as its shares slip in premarket trading, with the chipmaker announcing another $100 billion investment in Arizona and reporting a record quarterly profit that beat forecasts by a wide margin. The world’s most important producer of advanced AI chips said demand from cloud customers remains strong, lifting its 2026 capital-spending plan and reinforcing the idea that the AI buildout is still in full sprint. But the market’s reaction was cooler: TSMC ADRs fell about 3.5% to 4% before the open on Thursday, a sign investors are already asking how much more growth is priced in.
TSMC’s move also lands as Washington and Taipei tighten their semiconductor ties. The new Arizona commitment brings TSMC’s total planned U.S. investment to $265 billion, deepening an already huge push into American manufacturing. For President Donald Trump, who has repeatedly pressed for more chipmaking at home, the announcement is a political win. For TSMC, it is a strategic one: the company is trying to keep up with surging demand for AI chips while spreading production across regions and courting the biggest customers in cloud and high-performance computing.
The earnings are doing the heavy lifting behind the story. TSMC said second-quarter net profit rose 77% from a year earlier to NT$706.6 billion, or about $22 billion, topping analyst expectations of NT$632.6 billion. Revenue came in at NT$1.27 trillion, about $40.2 billion, up 36% year over year. It was the company’s fifth straight quarter of record profit and its ninth consecutive quarter of double-digit percentage growth, underscoring how AI infrastructure spending is still flowing through to the foundry business.
Margins were also exceptional. Gross margin reached 67.7%, operating margin was 60.3%, and net profit margin came in at 55.6%. Those numbers help explain why TSMC continues to talk more aggressively about capital spending. The company raised its 2026 capex guidance to $60 billion to $64 billion, up from a previous range of $52 billion to $56 billion, and said spending over the next three years will be even more significantly higher than in the past three years. That is not the language of a company bracing for a slowdown.
Chief Executive C.C. Wei framed the demand picture in unusually confident terms. “Our customers and customers’ customers, who are mainly the cloud service providers, continue to provide us with their very strong signal and positive outlook,” he said on the earnings call. “Thus, our conviction in the multi-year AI megatrend remains very high.” That matters because TSMC sits at the center of the semiconductor supply chain. When it says cloud and AI customers are still aggressive, Wall Street tends to listen.
The company’s guidance backed up that tone. For the current quarter, TSMC forecast sales of $44.6 billion to $45.8 billion. For full-year 2026, it now expects revenue in U.S. dollar terms to rise slightly more than 40%, better than its earlier outlook for more than 30% growth. Advanced technologies such as 7-nanometer and below made up 77% of wafer revenue, while high-performance computing, including AI, accounted for 66% of platform revenue. That mix shows how deeply AI-linked demand is embedded in the business.
The extra $100 billion in Arizona is the most eye-catching part of the announcement. TSMC said the new money would support several or more additional fabs for 2-nanometer mass production, along with advanced packaging facilities. Wei said the company believes the investment will help further foster the development of the U.S. semiconductor ecosystem, strengthen the supply chain, and support an increasing number of high-tech, high-paying jobs in the United States.
Still, the buildout is not a blank check without conditions. Reuters reported that an additional four plants would probably be built in Arizona, including advanced packaging, on top of the eight already being built or planned, but Wei said the timeline for the extra facilities would depend on market situation. That cautious phrasing matters. TSMC is not only trying to satisfy political pressure; it is trying not to overbuild into a future where customer forecasts prove too optimistic and chips end up in inventory.
What makes the Arizona plan more than a headline is its scale relative to TSMC’s earlier commitments. The company had already announced $165 billion for chip factories in the state, and the new pledge lifts the U.S. total to $265 billion. The company also said the move would help anchor the reciprocal trade agreement signed earlier this year between the U.S. and Taiwan, according to an economist at the Economist Intelligence Unit. That suggests the investment is being read as part industrial policy, part trade diplomacy, and part customer-service strategy.
TSMC’s importance goes beyond its own earnings. It is the main producer of advanced AI chips and a major Nvidia supplier, so its numbers often serve as a real-time gauge of where the AI capex cycle stands. The company also said demand remains strong for 3-nanometer and 2-nanometer process technologies and for its advanced chip packaging technology, CoWoS. That combination has pushed TSMC into rarefied territory. Its market value is now nearly double that of Samsung Electronics at around $1.97 trillion.
The company’s Taipei-listed shares have gained 59% so far this year, roughly in line with the broader market. That rally helps explain why investors were quick to take some profits despite the clean beat. The stock is already behaving like a market leader with a premium valuation attached to a growth story that has not yet cracked. So when a company like TSMC raises guidance, lifts capital spending, and adds $100 billion to a U.S. fab plan all in one day, the market response can still be muted if expectations were even higher.
TSMC’s update also arrives as other parts of the chip supply chain keep signaling expansion. On Wednesday, ASML raised its 2026 sales forecast and pledged more capacity, a move that could ease fears of bottlenecks slowing the AI boom. Wei said TSMC works closely with ASML and that adoption of next-generation equipment will depend on when it shows enough technical capability in manufacturing and cost effectiveness. For now, TSMC is still the company setting the pace, and its latest move says the next phase of the AI race may be fought as much in Arizona as in Taiwan.
