shares of leidos holdings inc ldos shed 146 to 9581 tuesday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 110 to 398616 and dow jones industrial average djia falling 096 to 3179087 leidos holdings inc closed 1531 short of its 52week high 11112 which the company achieved on april 20th the stock underperformed when compared to some of its competitors tuesday as lockheed martin corp lmt fell 106 to 42511 northrop grumman corp noc fell 100 to 48093 and general dynamics corp gd fell 110 to 23112 trading volume 450153 remained 251111 below its 50day average volume of 701264 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