shares of canadian national railway co cnr dropped 054 to c15712 monday in what proved to be an allaround poor trading session for the canadian market with the sptsx composite index gsptse falling 046 to 1993162 canadian national railway co closed c1827 short of its 52week high c17539 which the company achieved on december 13th trading volume of 29 m shares eclipsed 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