TEL  Vol.3 No.3 , June 2013
A Bias in Jensen’s Alpha When Returns Are Serially Correlated

This paper shows that Jensen’s alpha may be a biased performance measure even for public-information-based portfolios, unless the benchmark portfolio return has no serial correlation, and the bias can be substantial even when the underlying asset pricing model holds.

Cite this paper
J. Kang and S. Lee, "A Bias in Jensen’s Alpha When Returns Are Serially Correlated," Theoretical Economics Letters, Vol. 3 No. 3, 2013, pp. 188-190. doi: 10.4236/tel.2013.33031.
[1]   M. C. Jensen, “The Performance of Mutual Funds in the Period 1945-1964,” Journal of Finance, Vol. 23, No. 2, 1968, pp. 389-416. doi:10.1111/j.1540-6261.1968.tb00815.x

[2]   M. Grinblatt and S. Titman, “Portfolio Performance Evaluation: Old Issues and New Insights,” Review of Financial Studies, Vol. 2, No. 3, 1989, pp. 393-421. doi:10.1093/rfs/2.3.393

[3]   G. S. Maddala, “Limited-Dependent and Qualitative Variables in Econometrics,” Econometric Society Monographs, Cambridge University Press, Cambridge, 1983.

[4]   W. Ferson and R. Schadt, “Measuring Fund Strategy and Performance in Changing Economic Conditions,” Journal of Finance, Vol. 51, No. 2, 1966, pp. 425-461. doi:10.1111/j.1540-6261.1996.tb02690.x

[5]   J. Kang, T. S. Kim, C. Lee and B. Min, “Macroeconomic Risk and the Cross-Section of Stock Returns,” Journal of Banking and Finance, Vol. 35, No. 12, 2011, pp. 3158-3173. doi:10.1016/j.jbankfin.2011.04.012

[6]   M. Lettau and S. C. Ludvigson, “Resurrecting the (C)CAPM: A Cross-Sectional Test When Risk Premia Are Time-Varying,” Journal of Political Economy, Vol. 109, No. 6, 2001, pp. 1238-1287. doi:10.1086/323282