T-Mobile is trading 4.7% lower at $158.63 after a sharp after-hours decline, with no clear company-specific announcement identified.

  • It closed at $166.45 on September 28.
  • Major indices also fell: the S&P 500 was down 0.69%, the Nasdaq 0.58%, and the Dow 0.55%.
  • Broader market pressure followed renewed U.S.-Iran tensions, higher oil prices, and rising Treasury yields, though available evidence does not establish these as direct causes of T-Mobile’s larger decline.