Risk Adjustment and Trading Strategies

We assess the profitability of momentum strategies using a stochastic discount factor approach. In unconditional tests, approximately half of the strategies' profitability is explained. In conditional tests we see a further slight decline in profits. We argue that the risk of these strategies should be increasing in the market risk premium. Empirically, while their risk measures estimated relative to the stochastic discount factor behave as predicted, market betas do not; thus capital asset pricing model (CAPM)-like benchmarks may lead to incorrect inferences. Given that our nonparametric risk adjustment explains roughly half of momentum strategy profits, we cannot rule out the possibility of residual mispricing. Copyright 2003, Oxford University Press.

[1]  Robert F. Dittmar.  Nonlinear Pricing Kernels, Kurtosis Preference, and Evidence from the Cross Section of Equity Returns , 2002 .

[2]  J. Lewellen,et al.  Momentum and Autocorrelation in Stock Returns , 2002 .

[3]  Robert F. Dittmar.  Nonlinear Pricing Kernels, Kurtosis Preference, and the Cross-Section of Equity Returns , 2001 .

[4]  Tarun Chordia,et al.  Momentum, Business Cycle and Time Varying Expected Returns , 2001 .

[5]  Guofu Zhou,et al.  Tests of Mean-Variance Spanning , 2008 .

[6]  Mark Grinblatt,et al.  Do Industries Explain Momentum , 1999 .

[7]  Kent D. Daniel,et al.  Presentation Slides for 'Investor Psychology and Security Market Under and Overreactions' , 1998 .

[8]  Bruce D. Grundy,et al.  Understanding the Nature of the Risks and the Source of the Rewards to Momentum Investing , 1998 .

[9]  F. Eugene.  FAMA, . Market efficiency, long-term returns, and behavioral finance, Journal of Financial Economics . , 1998 .

[10]  N. Barberis,et al.  A Model of Investor Sentiment , 1997 .

[11]  E. Fama.  Market Efficiency, Long-Term Returns, and Behavioral Finance , 1997 .

[12]  Zhiwu Chen,et al.  Portfolio Performance Measurement: Theory and Applications , 1996 .

[13]  E. Fama,et al.  Multifactor Explanations of Asset Pricing Anomalies , 1996 .

[14]  S. P. Kothari,et al.  Problems in measuring portfolio performance An application to contrarian investment strategies , 1995 .

[15]  A. Mackinlay,et al.  Multifactor Models Do Not Explain Deviations from the CAPM , 1994 .

[16]  Ravi Jagannathan,et al.  Assessing Specification Errors in Stochastic Discount Factor Models , 1994 .

[17]  Narasimhan Jegadeesh,et al.  Returns to Buying Winners and Selling Losers: Implications for Stock Market Efficiency , 1993 .

[18]  Sheridan Titman,et al.  On Persistence in Mutual Fund Performance , 1997 .

[19]  E. Fama,et al.  The Cross‐Section of Expected Stock Returns , 1992 .

[20]  E. Fama,et al.  Efficient Capital Markets : II , 2007 .

[21]  Campbell R. Harvey,et al.  The Variation of Economic Risk Premiums , 1990, Journal of Political Economy.

[22]  Ravi Jagannathan,et al.  Implications of Security Market Data for Models of Dynamic Economies , 1990, Journal of Political Economy.

[23]  Jay Shanken,et al.  Intertemporal asset pricing: An Empirical Investigation , 1990 .

[24]  W. Ferson.  Changes in Expected Security Returns, Risk, and the Level of Interest Rates , 1989 .

[25]  Campbell R. Harvey.  Time-Varying Conditional Covariances in Tests of Asset Pricing Models , 1989 .

[26]  A. Lo,et al.  When are Contrarian Profits Due to Stock Market Overreaction? , 1989 .

[27]  E. Fama,et al.  Permanent and Temporary Components of Stock Prices , 1988, Journal of Political Economy.

[28]  Gur Huberman,et al.  Mean-Variance Spanning , 1987 .

[29]  A. Mackinlay.  On multivariate tests of the CAPM , 1987 .

[30]  Lars Peter Hansen,et al.  THE ROLE OF CONDITIONING INFORMATION IN DEDUCING TESTABLE RESTRICTIONS IMPLIED BY DYNAMIC ASSET PRICING MODELS1 , 1987 .

[31]  P. Schmidt,et al.  A Monte Carlo investigation of the accuracy of multivariate CAPM tests , 1985 .

[32]  J. Campbell.  Stock Returns and the Term Structure , 1985 .

[33]  W. Ferson,et al.  Testing asset pricing models with changing expectations and an unobservable market portfolio , 1985 .

[34]  M. Rothschild,et al.  Arbitrage, Factor Structure, and Mean-Variance Analysis on Large Asset Markets , 1982 .

[35]  L. Hansen,et al.  Generalized Instrumental Variables Estimation of Nonlinear Rational Expectations Models , 1982 .

[36]  L. Hansen.  Large Sample Properties of Generalized Method of Moments Estimators , 1982 .

[37]  T. Day.  Asset returns and inflation , 1981 .

[38]  Douglas T. Breeden.  An Intertemporal Asset Pricing Model with Stochastic Consumption and Investment Opportunities , 1979 .

[39]  David M. Kreps,et al.  Martingales and arbitrage in multiperiod securities markets , 1979 .

[40]  Richard Roll,et al.  AMBIGUITY WHEN PERFORMANCE IS MEASURED BY THE SECURITIES MARKET LINE , 1978 .

[41]  G. William Schwert,et al.  Asset returns and inflation , 1977 .

[42]  R. C. Merton,et al.  AN INTERTEMPORAL CAPITAL ASSET PRICING MODEL , 1973 .

[43]  M. C. Jensen.  The Performance of Mutual Funds in the Period 1945-1964 , 1967 .

[44]  B. King.  Market and Industry Factors in Stock Price Behavior , 1966 .