Teradyne, Inc. (TER) closed at $398.94 on October 9, 2026, declining 3.06% over the prior 24-hour period. The drop added to a broader weekly pullback, with shares down 3.99% over the past seven days.
Despite the near-term pressure, Teradyne's 30-day performance remains a bright spot in the data. The stock has gained 7.20% over the past month, suggesting recent sessions have given back only a portion of those earlier advances.
Teradyne's market capitalization stood at $64.38 billion as of the close, reflecting the company's continued standing as a large-cap name in its sector. The current price of $398.94 places shares within the context of both the weekly retreat and the longer monthly recovery.
The divergence between the stock's 30-day gain and its shorter-term losses points to a period of consolidation following a stronger run. Trading activity on the day was consistent with a broader reassessment of the stock's recent momentum.



