shares of ipg photonics corp ipgp slipped 077 to 17424 wednesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 013 to 451407 and dow jones industrial average djia falling 020 to 3503107 the stocks fall snapped a threeday winning streak ipg photonics corp closed 8831 short of its 52week high 26255 which the company achieved on january 19th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as northrop grumman corp noc rose 042 to 36040 ciena corp cien rose 111 to 5625 and iivi inc iivi fell 179 to 6073 trading volume 257593 remained 81438 below its 50day average volume of 339031 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