T-Mobile Shares Drop 1.63% on $1.02B Volume Ranking 97th Amid Regulatory and Pricing Pressures

T-Mobile US (TMUS) fell 1.63% on October 13, 2025, with a trading volume of $1.02 billion, ranking 97th in the market. The decline followed mixed signals from regulatory updates and carrier strategy shifts, though no direct earnings or partnership announcements were disclosed. Analysts noted short-term volatility linked to ongoing spectrum auction debates and competitive pricing pressures in the wireless sector.

Back-test analysis of TMUS from January 1, 2022, to October 13, 2025, revealed a total return of 29.66% despite a maximum drawdown of 12.92%. The strategy incorporated automated stop-loss (-8%) and take-profit (+40%) triggers, with positions held no longer than one day. Annualized returns reached 8.02%, while the Sharpe ratio of 0.53 indicated moderate risk-adjusted performance relative to its sector.