Do Portfolio Managers Underestimate Risk by Overanalyzing Data?

New research questions whether “smart” beta is always smart.
http://www.gsb.stanford.edu/insights/do-portfolio-managers-underestimate-risk-overanalyzing-data
New research questions whether “smart” beta is always smart.
http://www.gsb.stanford.edu/insights/do-portfolio-managers-underestimate-risk-overanalyzing-data