shares of sba communications corp sbac slipped 351 to 28312 wednesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 020 to 378328 and dow jones industrial average djia falling 014 to 3027387 the stocks fall snapped a threeday winning streak sba communications corp closed 10803 below its 52week high 39115 which the company reached on december 31st the stock underperformed when compared to some of its competitors wednesday as american tower reit amt fell 270 to 21414 crown castle inc cci fell 305 to 14577 and us cellular corp usm fell 265 to 2611 trading volume 676057 eclipsed its 50day average volume of 530821 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