Aehr remains a concentrated, expensive way to own wafer-level photonics burn-in: its 10-K says silicon-photonics customers primarily drove that revenue growth, and FY2027 guidance of $130m-$150m could nearly triple FY2026 sales, yet shares value it at about 20x the guide. Teradyne's acquired photonic-chip test business is not material to its much larger sales; Aehr's top five customers provided 70% of FY2026 revenue, so orders matter more than the headline CPO opportunity. x.com 

Aehr Test Systems' valuation looks ahead of its fundamentals after a strong turnaround quarter. Q4 FY2026 revenue rose 33% to $18.8 million with a return to GAAP profit, bookings hit a record $60.7 million and effective backlog topped $100.6 million. FY2027 guidance of $130-150 million implies 160-200% growth, so the post-earnings run prices in high expectations that depend on shipping FOX-XP systems on schedule without margin erosion. TRT is preferred for now. x.com  x.com 

Aehr Test Systems has validated its burn-in thesis as bookings convert to revenue and evaluation customers move into production, with AI processor power, silicon photonics and hybrid bonding raising the value of burn-in testing. Q4 bookings rose to $60.7M from $11.1M, effective backlog reached $100.6M, twice fiscal 2026 revenue, and fiscal 2027 guidance of $130M-$150M implies 160%-200% growth. The results lead optical production and could renew momentum in the optical theme. x.com  x.com  x.com  … Show more

Aehr Test Systems is key to AI manufacturing and can even be a bottleneck, but at almost 20x revenue through 2028 at the current price, it is stratospherically priced. The risk is giant if something goes wrong for the company or for the AI ramp, and even a slowdown could be deadly at such high valuations. Tech moats are not the same as financial moats. x.com 

Aehr Test Systems is unattractive near $100, at 22.5x sales and 112x forward earnings, even though it will very likely go above $100. Other burn-in names such as AEM Holdings look better placed to play catch-up. x.com 

Aehr Test Systems stands to benefit because testing is a bottleneck to scaling AI chips. Testing demand is about to surge. Investors did not question its price-to-sales ratio at 120, despite the current P/S objection. x.com  x.com 

The AI hardware cycle is far from over because orders at NVIDIA, Broadcom and Dell are still accelerating and the industry is booked out to 2028; supply, not demand, is the constraint. NVIDIA's Q2 revenue rose 106% to $96.2B, and it expects about 70% growth in fiscal 2028 despite wafer, packaging, HBM and power limits. Broadcom guides AI chip revenue to $115B in 2027 and $230B in 2028, and Dell's AI server backlog is $95B. GPUs and custom ASICs are expanding together. x.com 

Teradyne's growth is slowing, undercutting the AI-test growth valuation that lifted shares 242% in 2025. Q1 revenue nearly doubled to $1.28 billion and EPS of $2.56 beat the $2.04 estimate, but Q2 guidance of $1.15-1.25 billion is nearly 10% lower at the midpoint, and gross margin falls to 58-59% as one-off gains fade. Merchant GPU test revenue is only about $50 million this year against Advantest's entrenched lead, and about 70% AI exposure with concentrated customers magnifies tariff risk. … Show more

Aehr Test Systems' thesis strengthened with its best report ever, though the stock's risk/reward is now impaired. The most important disclosure was that its lead AI customer has eliminated system-level burn-in and moved production entirely to Aehr's wafer-level systems. FY27 guidance of $130-150M far exceeded the $85M consensus. x.com 

Semiconductor stocks' easy-money phase is over as the sector shifts from hype to show-me-the-money. The SOX index is down over 15% from its June peak, chip funds saw $11B of outflows in one week, the largest this century, short interest is at a three-year high and earnings growth is projected to slow by 2027. Memory and logic chips remain commodity-like. This is cyclical cooling, not a death knell; the AI build-out continues, but expect more turbulence and favor companies with defensive moats. … Show more