Teradyne shares surge 10.52% after-hours on Q4 earnings beat and AI-driven guidance boost.

Teradyne Inc. (TER) surged 10.52% in after-hours trading following the release of its Q4 2025 earnings report on Feb. 2, which exceeded expectations with adjusted EPS of $1.80 and revenue of $1.08 billion, driven by robust AI-related demand in compute and memory. The Semiconductor Test segment alone generated $883 million in revenue, reflecting 41% sequential growth. Additionally, the company issued upbeat Q1 2026 guidance of $1.15–$1.25 billion in revenue and adjusted EPS of up to $2.25, reinforcing investor confidence in its AI-driven growth trajectory. Analysts project a 45.2% year-over-year increase in adjusted EPS for fiscal 2026, with a consensus "Moderate Buy" rating and a mean price target of $291.20, a 7.4% premium to its current price. These results and forward-looking guidance align with the stock’s post-earnings rally, outperforming broader market indices and solidifying its position as a top performer in the S&P 500.