shares of dexcom inc dxcm inched 084 higher to 32392 monday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 186 to 397375 and the dow jones industrial average djia rising 198 to 3188024 this was the stocks third consecutive day of gains dexcom inc closed 33553 below its 52week high 65945 which the company achieved on november 18th the stock underperformed when compared to some of its competitors monday as johnson  johnson jnj rose 204 to 17944 abbott laboratories abt rose 158 to 11503 and medtronic plc mdt rose 169 to 10426 trading volume 592008 remained 188117 below its 50day average volume of 780125 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