Teradyne's stock experienced a significant intraday decline of 5.38%, as the semiconductor test equipment maker faced selling pressure following negative analyst actions and technical warnings.

The downturn was primarily triggered by Northland Securities downgrading Teradyne from Outperform to Market Perform, adjusting its price target to $270. This sentiment was echoed by other reports indicating the stock was flagged as potentially overbought and at risk of a correction in the near term, contributing to negative investor sentiment.

Despite the sell-off, several other major firms maintained positive ratings on Teradyne throughout the trading session, with multiple analysts raising their price targets, highlighting a divergence in market views on the stock's valuation and near-term prospects.