The Annals of Applied Probability
- Ann. Appl. Probab.
- Volume 22, Number 1 (2012), 239-284.
Portfolios and risk premia for the long run
Paolo Guasoni and Scott Robertson
Full-text: Open access
Abstract
This paper develops a method to derive optimal portfolios and risk premia explicitly in a general diffusion model for an investor with power utility and a long horizon. The market has several risky assets and is potentially incomplete. Investment opportunities are driven by, and partially correlated with, state variables which follow an autonomous diffusion. The framework nests models of stochastic interest rates, return predictability, stochastic volatility and correlation risk.
In models with several assets and a single state variable, long-run portfolios and risk premia admit explicit formulas up the solution of an ordinary differential equation which characterizes the principal eigenvalue of an elliptic operator. Multiple state variables lead to a quasilinear partial differential equation which is solvable for many models of interest.
The paper derives the long-run optimal portfolio and the long-run optimal pricing measures depending on relative risk aversion, as well as their finite-horizon performance.
Article information
Source
Ann. Appl. Probab. Volume 22, Number 1 (2012), 239-284.
Dates
First available in Project Euclid: 7 February 2012
Permanent link to this document
https://projecteuclid.org/euclid.aoap/1328623700
Digital Object Identifier
doi:10.1214/11-AAP767
Mathematical Reviews number (MathSciNet)
MR2932547
Zentralblatt MATH identifier
1247.91172
Subjects
Primary: 91G10: Portfolio theory 62P05: Applications to actuarial sciences and financial mathematics
Secondary: 91G20: Derivative securities
Keywords
Long-run portfolio choice derivatives pricing incomplete markets
Citation
Guasoni, Paolo; Robertson, Scott. Portfolios and risk premia for the long run. Ann. Appl. Probab. 22 (2012), no. 1, 239--284. doi:10.1214/11-AAP767. https://projecteuclid.org/euclid.aoap/1328623700.
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