shares of fortinet inc ftnt shed 500 to 28831 friday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 291 to 390086 and dow jones industrial average djia falling 273 to 3139279 fortinet inc closed 8346 below its 52week high 37177 which the company reached on december 29th the stock underperformed when compared to some of its competitors friday as cisco systems inc csco fell 174 to 4349 and hp inc hpq fell 379 to 3528 trading volume 14 m eclipsed its 50day average volume of 13 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