T ▲ +1.6% - AT&T Inc. $T - AT&T Delivers Value, Choice, and Flexibility with the New iPhone 18 Pro, iPhone 18 Pro Max, and iPhone Duo - Backed by America's Best Guarantee AT&T shares rose 1.6% following the company's announcement of new iPhone 18 offerings, including the Pro, Pro Max, and Duo models, all backed by its America's Best Guarantee. The telecom carrier's promotion of premium device options and service guarantees likely supported investor sentiment around its ability to drive customer value and retention in the competitive wireless market. 10-SEP-2026 12:22 PM ET