Teradyne, Inc. (TER) gained 2.62% on Tuesday, closing at $381.30 and extending a notable rally that has pushed the stock up 15.79% over the past seven days. The semiconductor test equipment maker's market capitalization stood at $58.08 billion at the close of trading.
The week's sharp advance contrasts with a more modest 30-day gain of 1.40%, suggesting the bulk of recent buying pressure has been concentrated in the past several sessions. The stock's one-week performance stands out as one of the more significant short-term moves in the broader equity market.
Teradyne operates as a leading supplier of automated test equipment used in the production of semiconductors, electronics, and other advanced components. Its share price movements are often closely watched as a proxy for broader trends in semiconductor manufacturing demand.
As of the September 22, 2026 close, TER's cumulative gains across the measured timeframes reflect a stock that has held modest ground over the past month while accelerating sharply in recent days.
