On September 1, United Microelectronics rose 3.22% in regular trading, trading at $20.78/share, with turnover of $27.93 million. Notably, the stock bucked broader semiconductor sector weakness, where major peers including NVIDIA (-2.13%), AMD (-2.85%), and Intel (-3.07%) all traded lower.

On the news front, UMC's board approved the issuance of up to $1.8 billion in unsecured overseas convertible bonds, to be issued in two tranches with a maximum tenor of five years and a tentative coupon rate of 0%. Proceeds will be directed toward machinery and equipment procurement as well as factory construction, extending the company's previously approved approximately $5 billion capital expenditure plan aimed at expanding capacity in Singapore and Tainan to capture AI and edge computing demand.

On the fundamentals side, UMC reported Q2 EPS of $0.54, significantly beating the consensus estimate of $0.15 by 260%. July consolidated revenue reached NT$23.84 billion, up 19% year-over-year, as mature-node order momentum continued to improve across power management, sensor, and AI peripheral chip segments, providing solid earnings support for the expansion initiative.

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