Archer Aviation Inc. (NYSE:ACHR) is one of the most active US stocks to buy according to analysts. On December 2, Archer Aviation announced an exclusive collaboration with Karem Aircraft to integrate military-grade rotor and tiltrotor technology into Archer’s next-generation vertical take-off and landing/VTOL aircraft. This alliance grants Archer unique access to Karem’s Optimum Speed Tiltrotor/OSTR technology, a system validated by the US Army through the Joint Multi-Role Technology Demonstration/JMR TD p ...