UMC Shares Climb 6% on AI Foundry Investment Defying Market’s Semiconductor Downturn

August 27, 2026 -

by Leokadia Głogulska, ts2.tech

HSINCHU, Taiwan – United Microelectronics Corp (UMC) shares rose 6% after the company maintained its confidence in its AI foundry strategy despite a wider sector selloff affecting semiconductor stocks.

• Shares of UMC in the U.S. climbed 6.2% to $19.48 ahead of Monday’s market open.
• The move boosted its market capitalization by an initial $2.85 billion.
• Taiwan-listed stocks rose 6.0%, as the domestic benchmark slipped 1.0%.
• The ADR was trading 5.1% higher than the average price target set by Wall Street analysts.

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