# Prof. Yakov Amihud on choosing a mutual fund manager

1 January 12, 2013 The Wall Street Journal ![Wall Street Journal logo](/sites/default/files/styles/246w/public/assets/images/wsjlogo.jpg?itok=5Qt0z3WX)>

Excerpt from the [Wall Street Journal ](http://online.wsj.com/article/SB10001424127887324442304578231851362953728.html)-- "To screen out such 'closet indexers,' Prof. [Amihud](http://www.stern.nyu.edu/faculty/bio/yakov-amihud) uses a statistical measure called 'R-squared' to observe how much of active fund managers' returns can be explained simply by the index."

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