On September 1, United Microelectronics rose 5.58% overnight, trading at $21.05 per share, with turnover of $1.3473 million.

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

The financing announcement follows a strong operational backdrop. United Microelectronics reported Q2 EPS of $0.54, beating the consensus estimate of $0.15 by 260%, while Q2 revenue of $2.176 billion also topped the $2.06 billion estimate. July sales surged 19% year-over-year to NT$23.84 billion. The board has also greenlit phased expansion at its Singapore P4 fab for silicon photonics production and a new wafer fab shell in Tainan Science Park, supporting future advanced packaging and supply chain diversification.

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