A new SEC filing for T-Mobile US Inc. (TMUS), dated 2026-07-24, captures the company's financial position for the quarter ending 30 June 2026 and represents the most recent regulatory disclosure available on this platform [Brief - 2026-09-11]. This filing prompted a comprehensive review of TMUS across fundamental, ownership, and macro dimensions. The disclosure covers the full scope of T-Mobile's balance sheet, income statement, and cash flow activity for the period, forming the basis for the data cited throughout this report.

For the trailing twelve months ending 30 June 2026, TMUS recorded revenue of $92.19 billion, reflecting year-over-year growth of 7.85%. Net income over the same period stood at $10.56 billion, representing a net margin of 11.45% and an operating margin of 19.80%. Earnings per share grew 5.28% year-over-year. The company held $2.83 billion in cash against total debt of $92.40 billion. The market capitalisation at the time of this report was approximately $180.76 billion, with a price-to-earnings ratio of 17.59 [SEC 10-Q - TMUS - 2026-06-30].

Five insider transactions were recorded in September 2026, with a net direction of selling and a combined net value of approximately -$137,671 [SEC Form 4 - TMUS - 2026-09]. On the institutional side, four notable new positions were opened during the most recent 13F reporting period. AQR Capital, Citadel, Millennium, and Bridgewater each initiated new holdings in TMUS [SEC 13F - AQR Capital - Q2 2026] [SEC 13F - Citadel - Q2 2026] [SEC 13F - Millennium - Q2 2026] [SEC 13F - Bridgewater - Q2 2026]. These simultaneous new entries across multiple large institutional filers represent the material position changes that triggered this report.

The prevailing macroeconomic rate environment shows the 10-year US Treasury yield at 4.94% and the 2-year yield at 4.67%, producing a normal yield curve spread of approximately 27 basis points [FRED DGS10] [FRED DGS2]. This rate configuration is relevant context for a company carrying $92.40 billion in total debt, as prevailing borrowing costs affect refinancing dynamics across the telecommunications sector.