shares of dexcom inc dxcm rallied 300 to 57042 wednesday on what proved to be an allaround great trading session for the stock market with the sp 500 index spx rising 095 to 439564 and the dow jones industrial average djia rising 100 to 3425832 the stocks rise snapped a threeday losing streak dexcom inc hit a new 52week high surpassing its previous peak of 56781 which the company achieved on september 16th the stock outperformed some of its competitors wednesday as johnson  johnson jnj fell 036 to 16393 abbott laboratories abt fell 038 to 12465 and medtronic plc mdt rose 084 to 12891 trading volume 519658 remained 67293 below its 50day average volume of 586951 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