Diodes Incorporated (DIOD) stock surged 5.35% in post-market trading on Tuesday, following the release of its fourth-quarter fiscal 2025 financial results.

The semiconductor company reported Q4 revenue of $391.6 million, representing a 15.4% year-over-year increase and surpassing analyst consensus estimates. Adjusted earnings per share came in at $0.34, also beating expectations. The strong performance was attributed to significant growth in the automotive market and demand related to AI server applications, which improved product mix and gross margins.

Furthermore, Diodes provided optimistic guidance for the first quarter of 2026, expecting revenue of approximately $395 million, plus or minus 3%. This outlook indicates a 19% year-over-year growth and exceeds both typical seasonal performance and analyst forecasts, signaling continued business momentum.