Why Is AEHR Stock Rocketing Nearly 30% Premarket Today?

• CEO Gayn Erickson said Aehr has reduced its reliance on the EV silicon carbide market, with most of fiscal 2026 revenue coming from other sectors. 
• The company is also seeing growth in AI chip testing, data center infrastructure, and optical device applications. 
• Aehr sees improving demand for silicon carbide and new opportunities in gallium nitride.

Aehr Test Systems (AEHR) stock surged over 29% premarket on Wednesday as CEO Gayn Erickson highlighted the company’s shift beyond electric-vehicle-related silicon carbide testing, as demand grows across artificial intelligence hardware, data center infrastructure, and advanced semiconductor applications. 

AEHR’s AI Testing Expansion And Data Center Growth 

Speaking during the fiscal fourth-quarter (Q4) earnings call, Erickson emphasized the company’s changing market profile, noting that revenue once depended heavily on silicon carbide products for electric vehicles but has since expanded into several emerging technology sectors.

“To illustrate the progress we've made in diversifying into additional high-growth markets, just 2 years ago, over 95% of our business was tied to silicon carbide for electric vehicles, whereas today, almost 95% of our fiscal year '26 revenue came from markets not electric vehicle silicon carbide,” said Erickson.

He also pointed to the company’s increased activity in optical device testing and burn-in solutions used for data center transceivers, chip-to-chip connectivity and hard disk drive technologies. These applications represented roughly 20% of fiscal 2026 revenue, and Aehr expects continued expansion in both AI-related semiconductor testing and data center markets during fiscal 2027.

Aehr Test Systems stock traded 29% higher in Wednesday’s premarket. 

Aehr Sees Semiconductor Opportunities

Beyond artificial intelligence infrastructure, Aehr sees signs that the silicon carbide market may be stabilizing after a difficult period. 

“And we're seeing encouraging signs of recovery in the silicon carbide market as well as new growth opportunities for power semiconductors such as in gallium nitride and even silicon-based power MOSFETs used in both automotive and AI data center applications,” said Erickson.

Aehr is also looking into testing memory chips, such as NAND flash and high-bandwidth memory used in AI systems. The company is working with memory makers to adjust its technology for future production needs. 

Aehr expects fiscal 2027 revenue of $130 million to $150 million, above the $85.14 million consensus estimate, according to Fiscal AI data.  

What Are AEHR Retail Traders Saying 

On Stocktwits, retail sentiment around the stock improved to ‘extremely bullish’ from ‘bullish’ territory the previous day, with over 4,000% jump in message volume over the past week. 

A user said, “I find fascinating that all the post are about the backlog or revenue.  Nothing about the call and Gayn telegraphing how AEHER is everywhere in semiconductor world including memory and silicon photonics.  I’m not counting my chickens yet, but Lordy are the well positioned for massive growth. 

Another user said, $AEHR has finally broken the shackles. That earnings report wasn’t just a beat; it was a statement.”

AEHR stock has gained 256% year-to-date. 

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