Aehr Test Systems' stock soared 21.13% during intraday trading on Thursday, following the company's announcement of a landmark production order.

The semiconductor test equipment maker received a record $41 million follow-on production order from its lead hyperscale AI customer for package-level burn-in of custom AI processor ASICs. The order, the largest in Aehr's history, includes Sonoma high-power package-level test and burn-in systems, along with related burn-in modules and device-specific sockets.

This substantial order brings Aehr's second-half fiscal-year bookings to more than $92 million, exceeding the company's recently increased expectations. The company's management stated that the order validates the Sonoma platform for high-volume production burn-in of very-high-power AI processor ASICs and signals strong future demand, particularly for a next-generation AI accelerator ASIC expected to move to production later this year.