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UMC Shares Extend Rally on 8-Inch Wafer Pricing Bets Ahead of Earnings

Traders are betting that tightening 8‑inch supply signals a turn in pricing before results arrive.

Overview

  • UMC stock in Taipei added to a two‑day gain of more than 6% as investors positioned for possible 8‑inch wafer price increases in 2026.
  • Industry surveys point to rising 200mm foundry utilization with limited new capacity, bolstering expectations for stronger pricing power.
  • U.S.-listed shares closed at $9.30 on Friday after touching $9.37, a 52‑week high on heavy volume of about 14.27 million shares.
  • Recent momentum followed UMC and Microchip’s SST unveiling of an automotive‑grade embedded flash platform on UMC’s 28HPC+ process that Microchip says is fully qualified and ready for mass production.
  • Investors are watching UMC’s Jan. 28 fourth‑quarter earnings and Feb. 5 monthly sales for clarity on order trends, pricing, and utilization that could validate the rally.