Teradyne, Inc. (TER) climbed 5.46% on Saturday, September 5, 2026, ending the session at $357.24. The move lifted the semiconductor test equipment maker's market capitalization to $52.94 billion.
Despite the day's advance, the stock's broader trend remains under pressure. Teradyne shares are down 7.90% over the trailing 30-day period, reflecting headwinds that have weighed on the name in recent weeks.
The seven-day picture tells a more measured story, with TER up just 0.64% over that span, suggesting the bulk of the weekly gain was concentrated in Saturday's session.
Teradyne designs and manufactures automated test equipment used in the semiconductor and electronics industries. The stock's one-day rebound narrowed, but did not erase, the losses accumulated over the past month.
