AmpliTech is among the space stocks that could double fastest, as its O-RAN radio stands out as a uniquely American product. Its Category B 64T64R Massive MIMO radio was the only one of that configuration in the O-RAN Alliance Spring 2026 PlugFest, where it showed interoperability with equipment from multiple vendors alongside AT&T, Deutsche Telekom, Orange, Rakuten Mobile and others. Its updated customer list now includes Amazon and Nvidia. x.com x.com x.comÂ