The S&P 500 Index (^GSPC) advanced 5.2% on the month in posting its best January performance since 1997 the year of Elton John’s elegiac ode to the dead Diana  Candle in the Wind. (Still the best method for generating light if last night’s 34-minute electricity blackout involving the 49ers of Candlestick Park is any indication.)   A wit once said that gridiron combines the “two worst features of American life: violence punctuated by committee meetings.” As with all the best jokes the zinger contains ample truth since firearms firm Smith & Wesson (SWHC) is now up 258% in the past four years and ...