Advantest

Advantest builds automated test equipment (ATE) for testing logic and memory chips, and is the dominant tester for HBM and AI accelerators. It supplies most of the industry's high-end SoC and memory testers. FY2025 (ended March 31, 2025) net sales were ¥779.7 billion (~$5.2B), up 60.3% year-over-year on AI-driven demand.

Ecosystem functionLeading ATE supplier for AI accelerator and HBM final test, a bottleneck stage as chip complexity rises.

Business modelSells automated test equipment