
T-Mobile US (TMUS) stock fell 5.6% on 17 September to about $166, the lowest it has traded in a year. One session is not the problem: over the past twelve months the stock returned -28.5% while the S&P 500 returned 17.0%, and the year is what matters. A rising market did not do that. What changed is inside the business, and part of it is deliberate.







