Taiwan Semiconductor Manufacturing Company controls more than half the world's output of chips used in everything from Apple's iPhones to Nvidia's cutting-edge artificial intelligence hardware.

Tech stocks took a hit this week as Dutch powerhouse ASML, which supplies chip-making machines to the semiconductor industry, unveiled a cut to its 2025 guidance and a disappointing slump in sales bookings.

Fuelling the falls were reports that US President Joe Biden's administration was considering a cap on exports of advanced AI chips to some countries.

TSMC -- which is listed in Taipei and New York -- said net profit in the three months to September hit NT$325.26 billion (US$10.1 billion), up 54.2 percent from the same period last year.

Revenues in the period grew 36 percent on-year to US$23.5 billion, the firm said in a statement.

TSMC chairman CC Wei said AI-related demand from customers was "extremely robust".

"Our business in the third quarter was supported by strong smartphone and AI-related demand for our industry-leading three nanometre and five nanometre technologies," Wei said in a briefing.

"Moving into fourth quarter, we expect our business to continue to be supported by strong demand for our leading-edge process technologies."

TSMC said it expected full-year revenue to increase by nearly 30 percent.

Taiwan's largest company raised its outlook for 2024 revenue in July, underscoring expectations for sustained spending on AI infrastructure from the likes of Microsoft and Amazon.

"The demand (for AI) is real and I believe it's just the beginning of this demand," Wei said Thursday.

"It will continue for many years."

- AI revolution -

TSMC is at the forefront of a generative AI revolution, churning out the world's most advanced microchips needed to power products made by Silicon Valley.

But it is grappling with geopolitical tensions between the United States and China over technology import restrictions, trade and Taiwan.

Its headquarters -- and the bulk of its fabrication plants -- are in Taiwan, a self-ruled island that China claims as part of its territory.

China held a day of large-scale war games around Taiwan on Monday that included a blockade exercise that experts have warned would be devastating for the island's economy.

The United States and some European countries have blocked exports of high-tech chip technology to China over fears of military use.

The semiconductor supply chain is highly vulnerable to shocks, and concerned governments have lobbied TSMC to move more production away from Taiwan.

TSMC's new factories overseas include three planned in the United States, while one opened in Japan this year.

Wei said its first factory in Arizona was expected to start "volume production" at the beginning of 2025.

Construction on a second factory in Japan would get underway in the fourth quarter of 2025, he said.

Wei said TSMC was confident its US and Japanese plants would deliver the "same level of manufacturing quality ... as from our fabs in Taiwan".

In August, the company broke ground on its first European factory in the eastern German city of Dresden and reportedly is planning more plants in Europe with a focus on AI chips.

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TSMC - TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY

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