Zhao, Yonggan; Ziemba, William T. - Institut für Schweizerisches Bankwesen <Zürich>; … - 2003
This paper extends Mertons continuous time (instantaneous) mean-varianceanalysis and the mutual fund separation theory. Given the existence of a Marko-vian state price density process, the optimal portfolios from concave utility max-imization are instantaneously mean-variance efficient...