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How is the value of the S&P 500 calculated? The S&P 500 is a U.S.market index that gives investors an idea of the overall movement in the U.S.equity market. The value of the S&P 500 constantly changes based on the movement of 500 underlying stocks. The index is computed by weighted average market capitalization.
â Growth in earnings per share is about to slow, and the dollar is going to hit turbulence. Here\âs how Goldman sums that up: âThe Russell 2000 has historically outperformed the S&P 500 during periods of accelerating EPS growth, expanding P/E multiples, and a strengthening dollar.We expect S&P 500 EPS growth to decelerate to 8% in 2014 from 11% this year, and that P/E multiple expansion has largely run its course.lready, leveraged funds have shorted the Russell 2000. index, portfolio strategists at Goldman note. The team, led by David Kostin, offers three other reasons why the index â up about 36% over the past 12 months and handily topping the S&P 500 â is at risk. â Valuations are really high.