Shiller PE Ratio

Robert Shiller, the famed Nobel laureate and economics professor at Yale University, has some alarming facts about the stock market that cause him to "lie awake worrying." The stock market's low volatility coupled with a questionable price to earnings ratio for stocks could result in...

Many investors are clinging on to one key metric which may indicate the bull rally has come to an end. The Shiller P/E ratio is at the highest it has been in years, which implies investors are paying more for each $1 in earnings than they have in the past. But CNBC's Jim Cramer isn't convinced....