shares of general dynamics corp gd slid 273 to 21443 thursday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 211 to 364047 and dow jones industrial average djia falling 154 to 2922561 general dynamics corp closed 4056 below its 52week high 25499 which the company achieved on march 7th the stock demonstrated a mixed performance when compared to some of its competitors thursday as honeywell international inc hon fell 216 to 17007 lockheed martin corp lmt fell 255 to 38979 and boeing co ba fell 608 to 12533 trading volume 986659 remained 22086 below its 50day average volume of 10 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