T-Mobile is trading 10.1% down at $154.03 after SpaceX agreed to acquire Grain Management’s nationwide 800 MHz spectrum portfolio, heightening concerns about co

T-Mobile is trading 10.1% down at $154.03 after SpaceX agreed to acquire Grain Management’s nationwide 800 MHz spectrum portfolio, heightening concerns about competition from satellite-based mobile services. - Reuters reported U.S. and European telecom shares tumbled after the deal, with T-Mobile a…