Oppenheimer Downgrades T-Mobile (TMUS) to ‘Perform’, Removes PT Due to Subscriber Growth Concerns, Heightened Competition

Core Insights - T-Mobile US Inc. has been downgraded by Oppenheimer from Outperform to Perform, with concerns about subscriber growth and free cash flow estimates [1][3] - The company reported its best-ever total postpaid net additions, raising its guidance for total postpaid net additions for the year [2][3] - T-Mobile's revenue for the quarter was $21.96 billion, reflecting an 8.90% year-over-year increase, although it missed Street estimates [2] Subscriber Growth and Competition - Oppenheimer forecasts that T-Mobile will struggle to exceed subscriber growth estimates due to slowing overall industry growth and heightened competition expected to last for 12 to 24 months [1][3] - The company added over 1 million postpaid phone net additions in Q3 2025, leading to an increase in total postpaid net additions guidance to 7.2 to 7.4 million for the full year [2][3] Financial Performance - T-Mobile achieved $21.96 billion in revenue, an 8.90% increase year-over-year, but missed estimates by $7.29 million [2] - The company reported earnings per share (EPS) of $2.77, exceeding guidance by $0.20 [2] Business Segments - T-Mobile's 5G broadband business added over 500,000 customers, and the fiber business added over 50,000 new customers, leading to an increase in fiber customer net additions guidance to approximately 130,000 [3]