SpaceX reached an agreement to acquire Grain Management's nationwide 800 MHz spectrum portfolio to bolster Starlink Mobile's capabilities, triggering sharp declines in major telecom stocks after the market close. T-Mobile, AT&T, and Verizon each fell 6-7% as investors assessed the competitive threat from Elon Musk's expanding satellite communications network.
→ Opening bell reaction and sustained selling in telecom sector Friday morning
→ Analyst commentary on Starlink Mobile's competitive positioning and regulatory implications
→ Whether sell-off extends to mid-cap carriers or stabilizes at the big three