Welcome to the Stocktwits Top 25 Newsletter this week!

The Stocktwits Top 25 reports the 25 best-performing stocks in the S&P 500, Nasdaq 100, and Russell 2000 year to date and tracks their performances over time. To help you understand this data further, check out our FAQ page, and feel free to reach out if you have questions!

Here are the Stocktwits Top 25 Lists for this week:

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The Top 25 list's Top Dawg was $AEHR ( ▲ 11.92% ) climbing 36%!

Silicon Photonics Just Put Aehr on the Map Again: The semiconductor burn-in testing company that spent years living and dying by electric vehicle chip demand announced Tuesday, April 1, that it has a major new customer building silicon photonics transceivers for AI data centers, and the market responded by sending a stock that was already up +355% in the past year up another +23% in a single session.

The RIP: $AEHR up +23% Tuesday, +31% on the week; new customer order for FOX-XP and FOX-NP wafer-level burn-in systems announced Tuesday, April 1; customer is an unnamed major networking products supplier building silicon photonics transceivers for hyperscale AI data centers; shipments scheduled for fiscal Q4 ending May 29, 2026; follow-on orders possible as early as later in 2026; Q3 earnings scheduled April 7.

"Silicon photonics-based optical transceivers are a critical enabling technology for this transformation, and we believe this order is particularly significant because it comes from a major new customer, a leading supplier of networking products and solutions for the data center market," CEO Gayn Erickson said Tuesday.

Aehr built its reputation testing silicon carbide chips for EVs, then the EV cycle collapsed and took the stock with it. The AI data center buildout is now replacing copper interconnects with fiber optic links because copper cannot handle the heat and bandwidth demands of next-generation GPU clusters, and silicon photonics is the technology that makes that transition possible.🔬

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