The past several years has witnessed the introduction of hundreds of so-called ‘smart beta’equity
indexes. These indexes provide exposure to risk factors, such as value or low volatility, …

… Hunstad and Dekhayser [2015] provided a simple quantification of factor index costs and
benefits in a metric called the factor efficiency ratio (FER). The numerator of the FER is just the …

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If you are engaged in factor-based investing and utilizing one of the many so-called smart beta
indices, you may not be getting the exposure you hoped for. To find out, compare the ratio …

The significant outperformance or underperformance of groups of stocks, such as sectors,
styles or capitalization ranges, can create extreme levels of concentration in cap-weighted …

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A recent article by Hunstad and Dekhayser (JII, Summer 2015) introduced a novel measure
of factor" purity"--the factor efficiency ratio--and concluded that the indexes analyzed" were …