shares of american tower reit amt shed 185 to 25613 tuesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 063 to 413215 and dow jones industrial average djia falling 067 to 3299012 american tower reit closed 4759 short of its 52week high 30372 which the company reached on september 8th the stock demonstrated a mixed performance when compared to some of its competitors tuesday as crown castle international corp cci fell 193 to 18965 rogers communications inc cl b rcib fell 012 to 6487 and sba communications corp sbac fell 315 to 33661 trading volume 27 m eclipsed its 50day average volume of 19 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