NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH
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Simon Rottke

University of Muenster
Finance Center
Universitaetsstr. 14-16
48143 Muenster
Germany

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NBER Working Papers and Publications

December 2017The Cross-Section of Risk and Return
with Kent Daniel, Lira Mota, Tano Santos: w24164
In the finance literature, a common practice is to create factor-portfolios by sorting on characteristics associated with average returns. We show that the resulting portfolios are likely to capture not only the priced risk associated with the characteristic, but also unpriced risk. We show that the unpriced risk can be hedged out of these factor portfolios using covariance information estimated from past returns. We apply our methodology to hedge out unpriced risk in the Fama and French (2015) five-factor portfolio. We find that the squared Sharpe ratio of the optimal combination of the resulting hedged factor-portfolios is 2.25, compared with 1.3 for the unhedged portfolios.
 
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