"Masahito Shimizu","Ex-post realized Sharpe ratio and information ratio achieved by the ex-ante forecast optimal portfolio",,,,,,,2020,Mar. "Masahito Shimizu","Ex-post realized Sharpe ratio and information ratio achieved by the ex-ante forecast optimal portfolio",,,,,,,2020,Mar. "Masahito Shimizu","Ex-post realized Sharpe ratio and information ratio achieved by the ex-ante forecast optimal portfolio",,,,,,,2020,Mar. "Masahito Shimizu","Ex-post realized Sharpe ratio and information ratio achieved by the ex-ante forecast optimal portfolio",,,,,,,2020,Mar.