On June 25, United Microelectronics (UMC) rose 3.03% in after-hours trading, trading at $28.96/share, with turnover of $11.21 million.

On the news front, multiple catalysts continued to drive UMC higher. Reports of Intel collaborating with UMC to develop 3nm and 12nm process technologies have been gaining traction, with market expectations that the 12nm node will enter mass production next year and contribute revenue — allowing UMC to access advanced process nodes without significant capital expenditure. Additionally, reports emerged that TSMC is cutting 28nm production by 25%, with some customers potentially shifting orders to UMC, providing further upside expectations.

The company also recently secured a spot in Qualcomm's supply chain through its embedded deep trench capacitor technology and has begun shipments. These developments build on a strong Q1 earnings report showing net profit surging 108% year-over-year to NT$16.17 billion. Meanwhile, the broader semiconductor sector rallied significantly, with Micron Technology up 15.41%, Intel up 4.29%, and AMD up 3.61%, further bolstering sentiment around UMC.

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