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@techreport{NBERw7009,
 title = "Conditioning Variables and the Cross-Section of Stock Returns",
 author = "Ferson, Wayne E and Harvey, Campbell R",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "7009",
 year = "1999",
 month = "March",
 doi = {10.3386/w7009},
 URL = "http://www.nber.org/papers/w7009",
 abstract = {Previous studies have identified predetermined variables that have some power to explain the time series of stock and bond returns.  This paper shows that loadings on the same variables also provide significant cross-sectional explanatory power for stock portfolio returns.  These loadings are important, over and the above the variables advocated by Fama and French (1993) in their three factor  model,' and also the four factors of Elton, Gruber and Blake (1995).  The explanatory power of the loadings on lagged variables is robust to various portfolio grouping procedures and other considerations.  The lagged variables reveal information about the cross-section of expected returns that is not captured by popular asset pricing factors.  These results carry implications for risk analysis, performance measurement, cost-of-capital calculations and other applications.},
}