AST SpaceMobile is trading 10.15% down at $51.15 now as investors react to FCC authorization for SpaceX to build a direct-to-phone satellite network using its own spectrum, challenging AST SpaceMobile’s carrier-dependent approach. - Coverage also cited investor concern over an FCC agenda viewed as a mixed signal for satellite-to-phone companies; the proposals are not final rules. - Broader indices are modestly higher, making the reported company/sector catalyst a better fit for the decline than broad-market weakness.