On August 24, United Microelectronics rose 6.76% in pre-market trading, trading at $19.04/share, with turnover of $200,200.

On the news front, UMC's silicon photonics foundry business achieved a major milestone. The company successfully delivered its first batch of 12-inch silicon photonics mass production wafers at its Singapore fab, making it one of the few global foundries capable of 12-inch PIC mass production. CEO Jason Wang stated that AI-related foundry revenue will grow from $3 billion this year to over $10 billion within three years, with silicon photonics as a key growth driver.

At the industry level, AI spillover effects are pushing mature-node processes into a price-hike cycle, with UMC's capacity utilization exceeding 90% and some critical chip orders booked into next year. The company's Q2 EPS of $0.54 significantly beat the market consensus of $0.15, representing a 260% outperformance. Its board has approved approximately $5 billion in capital expenditure for phased capacity expansion across Singapore and Taiwan facilities to capture AI and edge computing demand.

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