Before revision:  We find that the 1/x^2 weighting strategy produces cumulative returns that significantly dominates all other portfolios, achieving a compound annual growth rate of 20.889 \\%DIF < over the 1958-2015 horizon.
After revision:  We find that the 1/x^2 weighting strategy produces cumulative returns that significantly dominates all other portfolios, achieving a compound annual growth rate of 18 \\%DIF < over the 1958-2015 horizon.