Investing for the Long Run when Returns are Predictable
Yale School of Management; National Bureau of Economic Research (NBER)
Journal of Finance, Vol. 55, No. 1, February 2000
We examine how the evidence of predictability in asset returns affects optimal portfolio choice for investors with long horizons. Particular attention is paid to estimation risk, or uncertainty about the true values of model parameters. We find that even after incorporating parameter uncertainty, there is enough predictability in returns to make investors allocate substantially more to stocks, the longer their horizon. Moreover, the weak statistical significance of the evidence for predictability makes it important to take estimation risk into account; a long-horizon investor who ignores it may over-allocate to stocks by a sizeable amount.
JEL Classification: G1Accepted Paper Series
Date posted: January 4, 2000
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