shares of gartner inc it slid 143 to 30357 monday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 214 to 413799 and dow jones industrial average djia falling 191 to 3306361 this was the stocks second consecutive day of losses gartner inc closed 6543 short of its 52week high 36900 which the company reached on november 2nd the stock demonstrated a mixed performance when compared to some of its competitors monday as nielsen holdings plc nlsn rose 058 to 2781 and forrester research inc forr fell 216 to 4340 trading volume 526227 eclipsed its 50day average volume of 443682 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