Mimicking Portfolios, Economic Risk Premia, and Tests of Multi-Beta Models
Imperial College Business School
Boston College - Carroll School of Management
AFA 2006 Boston Meetings Paper
We consider two formulations of the linear factor model with non-traded factors. In the first formulation (LFM), risk premia and alphas are estimated by a cross-sectional regression of average returns on betas. In the second formulation (LFM*), the factors are replaced by their projections on the span of excess returns, and risk premia and alphas are estimated by time-series regressions. We compare the two formulations and we study the small-sample properties of estimates and test statistics. We conclude that the LFM* formulation should be considered in addition, or even instead, of the more traditional LFM formulation.
Number of Pages in PDF File: 51
Keywords: Mimicking Portfolios, Economic Risk Premia, Multi-Beta Models
JEL Classification: G12
Date posted: March 25, 2005
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