The Street offers an explanation of the bad news and misfortune of a local juggernaut company . . . Why Kansas City Southern Bombed on Friday . . . .Kansas City Southern (KSU_) shares suffered a double-digit percentage drop heading into Friday's trading session after fourth-quarter earnings missed analyst expectations on both the top and bottom line . . . In morning trading Friday, shares had dumped 19.9% to $93.97, following a flat trading range over January.