Did the last paragraph change? Yes: Update: Feb. 23, 10:12 a.m. ET: An erroneous reference to CN as a national rail provider has been removed, the railway havi

Did the last paragraph change? Yes: Update: Feb. 23, 10:12 a.m. ET: An erroneous reference to CN as a national rail provider has been removed, the railway having been publicly traded since 1995.