Aehr Test Systems stock surges 21.9% on AI chip-testing demand boom

Aehr Test Systems issued strong fiscal 2026 fourth-quarter results and an upbeat fiscal 2027 forecast, driving its stock up 21.91% on Wednesday. The semiconductor equipment maker reported net revenue of $18.8 million（約30億円）, up 33% year-over-year, in the quarter ended May 29. More impressively, the company achieved record bookings of $60.7 million（約97億円）—more than fivefold the prior-year quarter—bringing its effective backlog to $100.6 million（約160億円） when including bookings that occurred after the quarter's end.

Aehr's core business centers on testing systems that allow chipmakers to stress-test semiconductors under extreme conditions and identify potential defects early in production, thereby improving quality and reliability while lowering manufacturing costs. "Demand from AI-related applications continued to accelerate," CEO Gayn Erickson stated, capturing the driver behind the surge.

Financial performance also exceeded expectations. The company posted adjusted net income of $3.6 million（約5.8億円）, or $0.11 per share, a dramatic turnaround from a $0.2 million loss, or $0.01 per share, in the year-ago period. Wall Street had forecast an adjusted loss of $0.01 per share, making the beat significant. Looking ahead, management projected fiscal 2027 revenue of $130 million（約210億円） to $150 million（約240億円）, representing growth of 160% to 200%, with an adjusted net margin of up to 22%. The company highlighted AI processors, silicon photonics, and memory chips as key growth drivers, and Erickson emphasized that "multiple customers entering or expanding production, a record backlog, and additional opportunities under discussion" position Aehr for "multiple years of strong revenue growth."

Aehr Test Systems' sharp stock move reflects a confluence of near-term performance and forward visibility in AI chip production. The company's fiscal 2026 fourth-quarter results—33% revenue growth to $18.8 million（約30億円）, record bookings of $60.7 million（約97億円） (more than fivefold year-over-year), and an adjusted net income of $0.11 per share that beat Wall Street's loss estimate—demonstrate both execution and accelerating demand. The backlog of $100.6 million（約160億円） is substantial relative to quarterly revenue, indicating customers are committing capacity for the year ahead.

The significance lies in what this reveals about AI infrastructure buildout. Aehr's testing solutions are a necessary step in chip manufacturing quality assurance; the surge in bookings and the company's confidence in 160–200% revenue growth for fiscal 2027 (to $130–150 million) suggests that major chipmakers are scaling production of AI processors, silicon photonics, and memory devices at an unusually fast rate. CEO Gayn Erickson's remark that "multiple customers entering or expanding production" and "additional opportunities under discussion" signals a sustained tailwind rather than a short-term spike, positioning Aehr as a beneficiary of the capital expenditure wave in AI infrastructure.