Teradyne heads into its July 29 second-quarter earnings report with investor attention centered on one theme: AI. The company has nearly doubled in 2026 after making a highly concentrated bet on artificial intelligence demand, and that exposure now appears to be the main driver of the stock story.

Based on the latest figures highlighted in the preview, Teradyne posted 87% revenue growth in the first quarter of fiscal 2026 and delivered non-GAAP earnings of $2.56 per share. Just as important for the market, roughly 70% of revenue is now tied directly to AI demand. That makes the upcoming report a key test of whether AI-related orders are still accelerating or beginning to normalize.

For investors asking whether to buy before earnings, the core issue is concentration. Teradyne has benefited sharply from strong AI spending, but such a large share of revenue linked to one trend can also raise the stakes around guidance, customer demand, and management commentary. If the company shows that AI demand remains durable, the bull case may stay intact; if growth cools, the market could reassess how much upside is already reflected in the shares.

The report also matters in the context of broader semiconductor equipment comparisons, with peers such as ONTO and COHU often used as reference points. Even with that backdrop, Teradyne's near-term direction appears likely to depend most on whether its AI-driven momentum can carry through the second quarter and beyond.