Teradyne Stock Is Getting Hammered. This Is Why.

Teradyne’s performance on Wednesday is a reminder that the stock market is fickle and that calling a reaction to any company’s earnings report is little better than a coin flip.

Shares of Teradyne, which makes test equipment for semiconductors, were down more than 16% in midday trading on Wednesday at $319. 06, while the and were down 0. 3% and 0. 6%, respectively. Teradyne is on pace for its third consecutive decline.