TradingKey – On October 9 ET, AST SpaceMobile (ASTS) stock fell as much as 16% intraday, hitting its lowest level since October 2025.

The direct trigger for the stock decline was SpaceX (SPCX) announcing the acquisition of nationwide 800MHz low-band spectrum, with plans to integrate it with its Starlink satellite network to build an independent mobile carrier business.

This transaction is viewed by the market as a signal that SpaceX is officially entering the U.S. mobile telecommunications market. For AST SpaceMobile, the impact stems not only from a new competitor, but also from SpaceX changing the rules of competition in the direct-to-cell satellite industry.

ASTS stock chart, Source: TradingView