T-Mobile (TMUS) news that moved the stock

What happened

Amdocs (DOX) shares collapsed in Tuesday after-hours trading to ~$34.50 from a $62.43 close, a level not seen since early 2013, and were down ~30-42% in Wednesday's session. The crash followed a fiscal 2027 guidance cut driven by a legal dispute with largest customer T-Mobile: revenue could fall 14.3-17.9% on a reported basis (7-11% pro forma in constant currency excluding exited businesses), with non-GAAP EPS down 26-30% to ~$5.19-5.48 vs $7.41 in FY2026. Q1 revenue guidance of $955-995M and EPS of $1.27-1.33 both missed consensus by wide margins (~$1.2B and ~$1.93). The drop erased roughly $2-3B of market value. Following the results, Oppenheimer analyst Timothy Horan downgraded Amdocs to Perform from Outperform, citing the weak forecast and uncertainty over the dispute.

What happened

The Washington Post reported on Monday that SpaceX has been in talks for months with EchoStar about either acquiring Boost Mobile outright or gaining access to its wireless network, according to people familiar with the negotiations. Elon Musk personally met EchoStar chairman Charlie Ergen last month to discuss a potential transaction. The move would support SpaceX's plan to build Starlink Mobile, a hybrid satellite-terrestrial network combining its satellite constellation with ground-based infrastructure to challenge AT&T, Verizon, and T-Mobile as a fourth national carrier. EchoStar had about 7.38 million wireless subscribers at the end of Q2, mostly through Boost Mobile and Gen Mobile — a ready-made customer base and retail distribution network for SpaceX. SpaceX has also approached AT&T, T-Mobile, and Verizon about buying network capacity directly; all three rebuffed it, and the carriers may need to approve any Boost transfer since network-leasing agreements are usually nontransferable. Neither SpaceX nor EchoStar commented. Telecom stocks fell more than 2% each on the report while EchoStar rose roughly 4-5%.

What happened

Reports on Friday said SpaceX is pursuing thousands of U.S. cell sites to establish a fourth national wireless carrier. The news hammered incumbent carriers in Friday trading: AT&T and T-Mobile each sank nearly 8%, while Verizon shed 1.2%, dragging down the broader communication services sector. Conversely, U.S. cell-tower operators rallied hard on the prospect of a well-funded new tenant — Crown Castle jumped 9% and American Tower gained 4%. SpaceX shares rose about 1.9% on the session.

What happened

SpaceX announced a definitive agreement late Thursday to acquire 100% of Grain Management's nationwide 800 MHz spectrum portfolio — up to 14 megahertz of paired low-band spectrum — subject to FCC approval. SpaceX said the 'prime low-band spectrum addresses one of the key remaining technical gaps that will pave the way for Starlink Mobile to become a major mobile carrier in the U.S.' The low-band airwaves provide the indoor-penetrating coverage layer that complements Starlink Mobile's existing global 2 GHz mid-band capacity; most existing phones already support the 800 MHz band. Starlink Mobile plans a hybrid architecture combining the satellite-to-mobile constellation with a terrestrial network, and the FCC has separately approved its Gen2 plan authorizing 15,000 satellites optimized for 2 GHz. The market read it as a credible carrier-competition threat: Verizon, AT&T and T-Mobile all fell about 7% in after-hours trading, with AST SpaceMobile down 3%.