Dec 2025 Revenue: NT$21.2B, +5.9% YoY

Original: 2303 2025年12月月營收

Summary

UMC reported December 2025 revenue of NT$21.23 billion, up 5.91% year-over-year but essentially flat month-over-month at -0.29%. The modest YoY growth suggests stable mature-node foundry demand, though the lack of sequential momentum points to a still-muted recovery in non-AI semiconductor cycles where UMC is primarily exposed.

Historical Impact

10 past Monthly Revenue · ≈ 8-K events at UMC

Median +5d

+0.96%

Range

-2.99% to +27.14%

Positive outcomes

7/10

Filed	P₀	P₊₅	+5d
Jun 17, 2026	NT$140	NT$178	+27.14%
May 17, 2026	NT$111	NT$125	+12.61%

Full Translation

UMC (2303) December 2025 Monthly Revenue Filing: Current month revenue came in at NT$21.23 billion (NT$21,233,847 thousand), representing a year-over-year increase of +5.91% versus December 2024. Sequentially, revenue declined slightly by -0.29% month-over-month, indicating a flat finish to the year. As a mature-node foundry, UMC's results reflect ongoing stability in legacy logic, display driver, and specialty process demand, rather than the AI/HBM-driven surge benefiting leading-edge peers.