T-Mobile, Verizon and AT&T Fall on Starlink Mobile

Investors rushed out of the carriers and into companies tied to wireless infrastructure. Crown Castle jumped 12%, SBA Communications rose 6% and American Tower climbed almost 8% as traders bet that stronger competition for mobile connectivity could increase demand for tower and network assets, even if it squeezes carrier economics.

The move underscores how quickly the market is repricing telecom stocks around disruption from SpaceX, which has been building out Starlink as a more direct competitor to traditional mobile services. For the carriers, the concern is not just customer churn but also the possibility that they may need to spend more to defend market share while growth slows.

The split reaction also shows how investors are separating the wireless layer from the infrastructure layer. Tower owners tend to benefit when carriers keep investing in network capacity, but the carriers face margin pressure if they are forced to compete harder on price or bundle more services to keep users.

Other midday movers were driven by company-specific news. Teva Pharmaceutical rose 6% after FDA approval of Weltruza, its monthly long-acting injectable treatment for schizophrenia in adults, while Delta Air Lines slipped almost 2% after weaker-than-expected quarterly earnings and a cut to its full-year outlook on higher fuel costs. Apple fell nearly 2% after Nikkei Asia reported it was trimming iPhone 18 Pro component orders, and Lumentum gained about 7% after its CEO said optical components were sold out through 2029.

For telecom investors, the next catalyst is whether the Starlink Mobile push becomes a real commercial threat or just another competitive overhang. Any further signals from SpaceX, or from the carriers on pricing, capex and subscriber trends, are likely to keep the sector volatile.