T-Mobile Stock Drops After SpaceX Announces Spectrum Purchase for Starlink Mobile

On October 8, 2026, T-Mobile (NASDAQ: TMUS) experienced a significant stock price drop of approximately -13.44%, following an announcement that Elon Musk's SpaceX is acquiring spectrum to launch its own mobile communications service through Starlink. The move signals a potential shift in the relationship between SpaceX and T-Mobile from partners to competitors. SpaceX plans to use up to 14 megahertz of paired spectrum in the 800 MHz band, which could enable it to become a major U.S. mobile carrier. This development has raised concerns among investors that Starlink Mobile may compete directly with T-Mobile and other telecom giants like AT&T and Verizon. Analysts previously expected SpaceX's partnership to give T-Mobile an edge in growth over its rivals; however, the new venture could slow down this momentum. The stock decline reflects investor worries about reduced earnings potential and a possible drop in T-Mobile’s P/E ratio.

By Rich Smith · Motley Fool ·

T-Mobile Stock Drops After SpaceX Announces Spectrum Purchase for Starlink Mobile

Tickers: $SPCX $TMUS

Topics: SpaceX Spectrum Purchase Starlink Mobile T-Mobile

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