SpaceX is pushing aggressively into the U.S. mobile market, announcing a major spectrum acquisition that has rattled legacy wireless carriers and their investors.
SpaceX struck an agreement to purchase a nationwide spectrum portfolio from Grain Management, a firm specializing in digital infrastructure, pending FCC approval.
The deal covers “a license portfolio of up to 14 megahertz of paired spectrum in the 800 MHz band,” giving Starlink critical airwaves for mobile expansion.
SpaceX CEO Elon Musk described the agreement as “a very big deal” in a post on X, signaling the company’s serious intent to compete directly with established carriers.
Shares of AT&T (T) slid almost 8%, Verizon (VZ) fell close to 7%, and T-Mobile (TMUS) dropped about 7% as investors absorbed the competitive threat Starlink now poses.
SpaceX, which began trading publicly under the ticker SPCX in June 2026, saw its shares rise 3% in extended trading following the announcement.
SpaceX President and COO Gwynne Shotwell made clear the company has its sights set firmly on winning customers away from the three major carriers.
“I anticipate us to be able to acquire quite a few of their customers because I think our service will be better,” Shotwell said on a call with investors and media.
SpaceX had previously acquired 65 megahertz of wireless spectrum from EchoStar across two deals totaling $19.6 billion, establishing a substantial foundation for its mobile ambitions.
Those earlier acquisitions, combined with the latest Grain Management deal, position Starlink to operate a standalone cellular network alongside its existing direct-to-cell satellite capabilities.
Last week, T-Mobile, AT&T, and Verizon formed a joint venture focused on expanding coverage in underserved areas through satellite and direct-to-device services, with Starlink notably absent from the partnership.
T-Mobile has also previously removed mention of Starlink from its T-Satellite promotional materials, underscoring the increasingly adversarial relationship between the companies.
Wall Street concern had already been building over Starlink’s potential to disrupt legacy wireless operators by evolving beyond rural broadband into a full mobile competitor.
The expansion threatens traditional carriers’ high-margin enterprise, emergency service, and rural subscriber bases, as well as lucrative international roaming revenues that underpin their business models.
