US Equipment Stocks Surge 9 Trillion Won in Market Cap with AI Semiconductor Testing

Shares of U.S. semiconductor test-equipment maker Teradyne Inc. (NASDAQ: TER) jumped 13.48% from the previous day to close at $282.98 on the Nasdaq, sparking intense buying interest with trading volume topping 8.23 million shares.

The company’s market capitalization climbed to approximately $44.3 billion, up about $6.9 billion in a single session.

The surge followed Teradyne’s better-than-expected fiscal fourth-quarter 2025 results, announced after markets closed. The company reported revenue of $1.08 billion and adjusted earnings per share of $1.80, significantly exceeding analysts’ estimates.

Looking ahead, Teradyne issued strong guidance for the first quarter of 2026, forecasting revenue between $1.15 billion and $1.25 billion and EPS of $1.89 to $2.25. It also declared a quarterly dividend of roughly $0.13 per share, underscoring management’s confidence in growing demand for AI-chip testing.

Headquartered in Massachusetts, Teradyne supplies automated semiconductor test systems and industrial robots to major global chipmakers and fabless firms, positioning it to benefit from rising AI-chip and high-performance computing investments. Its robotics and automation solutions also tap into factory and production-line automation demand, making Teradyne a favorite among investors looking to play both the AI boom and the broader manufacturing investment cycle.