NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Rational Asset Prices

George M. Constantinides

NBER Working Paper No. 8826
Issued in March 2002
NBER Program(s):   AP

The mean, co-variability, and predictability of the return of different classes of financial assets challenge the rational economic model for an explanation. The unconditional mean aggregate equity premium is almost seven percent per year and remains high after adjusting downwards the sample mean premium by introducing prior beliefs about the stationarity of the price-dividend ratio and the (non) forecastability of the long-term dividend growth and price-dividend ratio. Recognition that idiosyncratic income shocks are uninsurable and concentrated in recessions contributes toward an explanation. Also borrowing constraints over the investors' life cycle that shift the stock market risk to the saving middle-aged consumers contribute toward an explanation.

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Document Object Identifier (DOI): 10.3386/w8826

Published: Constantinides, George M. "Presidential Address: Rational Asset Prices," Journal of Finance, 2002, v57(4,Aug), 1567-1591.

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