Today S&P 500: 2031.92Shiller P/E: 26.5 (+ 0.03%)Shiller P/E is 59.6% higher than the historical mean of 16.6Implied future annual return: 0.6%Historical low: 4.8Historical high: 44.2Regular P/E: 20$标普500指数ETF-SPDR(SPY)$ $标普500指数ETF-ProShares三倍做空(SPXU)$ $标准普尔500指数(SP500)$ $Dow Jones Industrial Average(.DJI)$ $道指ETF-SPDR(DIA)$