On September 2, United Microelectronics fell 3.13% overnight, trading at $19.83/share, with turnover of $610,100. The decline partially reversed the prior session's rally, as investors reassessed the dilution implications of a newly approved convertible bond offering.

On the news front, United Microelectronics' board recently 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%. The zero-coupon structure means investor returns depend entirely on share conversion, amplifying potential equity dilution concerns. While the announcement initially drove a sharp rally on September 1, the subsequent session saw partial profit-taking as the market weighed the dilutive impact against the capital deployment benefits.

The proceeds are earmarked for machinery procurement and factory construction, extending the company's approximately $5 billion capital expenditure plan focused on expanding capacity in Singapore and Tainan to capture AI and edge computing demand. Fundamentally, United Microelectronics reported Q2 EPS of $0.54, beating the consensus estimate of $0.15 by 260%, while July revenue rose 19% year-over-year to NT$23.84 billion, underscoring sustained momentum in mature-node demand.

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