T-Mobile (TMUS): Falls 13% as the spectrum it sold in August heads to SpaceX
T-Mobile fell 13.3% on Friday, its worst day since 2011, after SpaceX agreed to buy Grain Management's 800 MHz spectrum. T-Mobile sold that spectrum to Grain in August for $2.9B plus 600 MHz licences. Analysts see limited near-term risk.
Why it matters Investors fear a well-funded fourth national carrier and a possible price war. T-Mobile no longer owns the airwaves, so the sale is a reminder that spectrum it shed can become a rival's asset.
What we verified NBC News reports T-Mobile closed down 13.3%, with JPMorgan and UBS seeing limited near-term risk. Light Reading and Cleary Gottlieb confirm T-Mobile's sale of the 800 MHz portfolio to Grain closed in August 2026. SpaceX's reported $8B price comes from the Wall Street Journal; the companies did not disclose terms, and the deal needs FCC approval.
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