AmpliTech Group stock rose 42.6% after demonstrating the first open-source Massive MIMO AI-RAN system with NVIDIA, positioning itself as a rare U.S. supplier in the Open RAN infrastructure market.

What happened: AmpliTech Group's O-RAN CAT B 64T64R Massive MIMO radio was the only American-designed radio at that specification to complete successful multi-vendor interoperability testing at the O-RAN ALLIANCE Global PlugFest Spring 2026, and supported the world's first open-source Massive MIMO AI-RAN demonstration with NVIDIA and Northeastern University.

Why it matters: AmpliTech has reaffirmed FY2026 revenue guidance of at least US$50,000,000, and the company's ability to convert these Open RAN and AI-RAN technical wins into repeat deployments with more operators and cloud partners could help reduce its current dependence on a small number of Tier 1 customers. However, investor risk remains if orders slow or slip, since revenue is still concentrated in a handful of large contracts.

What to watch: AmpliTech Group's narrative projects $103.3 million（約170億円） revenue and $33.4 million（約53億円） earnings by 2029, requiring 56.5% yearly revenue growth. Fair value estimates from the Simply Wall St Community span roughly US$6.01 to US$7.76 per share, suggesting the stock may face downside if the company cannot broaden its revenue base beyond its current largest customers.