Although the truth is often plain to see, investors don't believe what they see.
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I think 2014 will be a year when reversion to the mean hits the market and we see at least a 20% sell-off.
The Sell In May Vigilantes caught up with Mr. Market soon enough, putting a nail in the market on May 22.
S&P's chief investment strategist Sam Stovall crunches the numbers.