The test and burn-in equipment maker got a follow-on order from an AI hyperscaler to test its own AI chips.Shares of semiconductor testing company Aehr Test Systems (AEHR 39.72%) have rocketed 37.5% on Monday as of 12:22 PM ET.Aehr makes test-and-burn-in equipment that enables chipmakers to "stress test" their semiconductors while the chips are still on the wafer or in a package, before the chips are built into completed systems.While Aehr's equipment has traditionally been used for chips in high-intensity ...