Teradyne (TER) shares gained 21% over six consecutive trading days. The stock closed at $398.69 on September 22, 2026. This rally added approximately $11 billion to the company's market capitalization.
Second-quarter revenue reached $1.33 billion. This figure represents a 104% increase compared to the same period last year. The Semiconductor Test division generated over $1.1 billion in revenue. Division revenue grew by 128% during the quarter.
Soaring investment in artificial intelligence infrastructure drove the record demand for test equipment. The company issued a strong third-quarter forecast citing continued AI-related growth.