No bull lasts forever. Good times eventually are followed by bad ones, as investor euphoria gives way to fear and despair. The performance history of the Standard & Poor’s 500 stock index drives home the point: The 12 bull markets since the 1930s have all been followed by bear markets, or downturns of 20% or more, according to S&P Dow Jones Indices. The average bear market decline is a sizable 40%. Then there’s the mega-bears like the 2007-2009 rout during the financial crisis that knocked the S&P 500 down 57% and the nearly 50% slide after the internet stock bubble burst in 2000.
The current bull run, the second-longest in history and one that's generated a fourth-best gain of 254%, will eventually tire out, hit one final peak and head lower like all the rest.
The only question is when?
James Stack, a mark