shares of general dynamics corp gd slumped 008 to 21212 monday on what proved to be an allaround mixed trading session for the stock market with the dow jones industrial average djia rising 000 to 3509113 and the sp 500 index spx falling 037 to 448387 general dynamics corp closed 409 short of its 52week high 21621 which the company achieved on february 4th trading volume 10 m remained 158275 below its 50day average volume of 12 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