shares of tmobile us inc tmus slipped 163 to 13758 thursday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 058 to 447000 and dow jones industrial average djia falling 054 to 3521312 this was the stocks third consecutive day of losses tmobile us inc closed 1262 below its 52week high 15020 which the company reached on july 16th the stock underperformed when compared to some of its competitors thursday as verizon communications inc vz fell 060 to 5460 att inc t fell 149 to 2702 and america movil sab de cv adr series l amx rose 097 to 1867 trading volume 42 m eclipsed its 50day average volume of 36 m editors note this story was autogenerated by automated insights an automation technology provider using data from dow jones and factset see our market data terms of use