Abstract: We analyze consumption and asset pricing with recursive
preferences given by Kreps--Porteus stochastic differential
utility (K--P SDU). We show that utility depends on two state
variables: current consumption and a second variable (related
to the wealth--consumption ratio) that captures all
information about future opportunities. This representation of
utility reduces the internal consistency condition for K--P
SDU to a restriction on the second variable in terms of the
dynamics of a forcing process (consumption, the state--price
deflator, or the return on the market portfolio). Solving the
model for (i) optimal consumption, (ii) the optimal portfolio,
and (iii) asset prices in general equilibrium amounts to
finding the process for the second variable that satisfies
this restriction. We show that the wealth--consumption ratio
is the value of an annuity when the numeraire is changed from
units of the consumption good to units of the consumption
process, and we characterize certain features of the solution
in a non-Markovian setting. In a Markovian setting, we provide
a solution method that is quite general and can be used to
produce fast, accurate numerical solutions that converge to
the Taylor expansion.
Keywords: Recursive preferences, stochastic differential utility, general equilibrium, optimal consumption, optimal portfolio, equity premium, term structure of interest rates, asset pricing
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