Quantifying Sustainability MSCI KLD DSI 400 index of US large cap firms considered socially responsible, 20 year history Typically about 200 firms in common with the S&P 500 July 31, 1995 DSI 400, Median 17, Average 17.91, Standard Deviation 9.93 S&P 500, Median 14, Average 15.40, Standard Deviation 9.28 Difference in Means is statistically significant at 95% level March 31, 2010 DSI 400, Median 30, Average 26.39, Standard Deviation 11.45 S&P 500, Median 30, Average 24.93, Standard Deviation, 10.92 Difference in Means is statistically significant at 90% but not 95% Testing on Disjoint Sets (DSI NOT S&P, S&P NOT DSI) Statistically significant difference in means for every time period tested
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