shares of national bank of canada na slid 011 to c9943 friday in what proved to be an allaround negative trading session for the canadian market with the sptsx composite index gsptse falling 026 to 1997537 national bank of canada closed c540 below its 52week high c10483 which the company reached on march 1st trading volume of 31 m shares eclipsed its 50day average volume of 13 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