shares of american tower reit amt dropped 068 to 18352 monday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 090 to 451844 and the dow jones industrial average djia rising 116 to 3547313 this was the stocks fourth consecutive day of losses american tower reit closed 9895 below its 52week high 28247 which the company achieved on august 15th the stock demonstrated a mixed performance when compared to some of its competitors monday as crown castle inc cci rose 004 to 10385 and sba communications corp sbac fell 124 to 22011 trading volume 16 m remained 898660 below its 50day average volume of 25 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