This chip equipment maker, which is a play on the EV market, just made an AI chip-focused acquisition, which is expected to be immediately accretive to its earnings.Aehr Test Systems (AEHR 2.50%) stock surged 13.4% in after-hours trading on Tuesday, following the semiconductor test and reliability qualification equipment supplier's release of its results for its fourth quarter of fiscal 2024 (ended May 31). The stock's rise is attributable to Aehr's fiscal year 2025 revenue guidance beating Wall Street's co ...