Heat Kernel Framework for Asset Pricing in Finite Time
Abstract
A heat kernel approach is proposed for the development of a general, flexible, and mathematically tractable asset pricing framework in finite time. The pricing kernel, giving rise to the price system in an incomplete market, is modelled by weighted heat kernels that are driven by multivariate Markov processes and that provide enough degrees of freedom in order to calibrate to relevant data, e.g. to the term structure of bond prices. It is shown how, for a class of models, the prices of bonds, caplets, and swaptions can be computed in closed form. The dynamical equations for the price processes are derived, and explicit formulae are obtained for the short rate of interest, the risk premium, and for the stochastic volatility of prices. Several of the closed-form asset price models presented in this paper are driven by combinations of Markovian jump processes with different probability laws. Such models provide a rich basis for consistent applications in several sectors of a financial market including equity, fixed-income, commodities, and insurance. The flexible, multidimensional and multivariate structure, on which the asset price models are constructed, lends itself well to the transparent modelling of dependence across asset classes. As an illustration, the impact on prices by spiralling debt, a typical feature of a financial crisis, is modelled explicitly, and contagion effects are readily observed in the dynamics of asset returns.Download Info
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Paper provided by arXiv.org in its series Papers with number 1211.0856.Length:
Date of creation: Nov 2012
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Handle: RePEc:arx:papers:1211.0856
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Web page: http://arxiv.org/
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Keywords:This paper has been announced in the following NEP Reports:
- NEP-ALL-2012-11-17 (All new papers)
References
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- Back, Kerry, 2010. "Asset Pricing and Portfolio Choice Theory," OUP Catalogue, Oxford University Press, number 9780195380613, July.
- Dorje C. Brody & Lane P. Hughston & Andrea Macrina, 2008. "Information-Based Asset Pricing," International Journal of Theoretical and Applied Finance (IJTAF), World Scientific Publishing Co. Pte. Ltd., vol. 11(01), pages 107-142.
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- Edward Hoyle & Lane P. Hughston & Andrea Macrina, 2010. "Stable-1/2 Bridges and Insurance: a Bayesian approach to non-life reserving," Papers 1005.0496, arXiv.org, revised Sep 2010.
- Jiro Akahori & Andrea Macrina, 2010.
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Papers
1012.1878, arXiv.org.
- JirĂ´ Akahori & Andrea Macrina, 2012. "Heat Kernel Interest Rate Models With Time-Inhomogeneous Markov Processes," International Journal of Theoretical and Applied Finance (IJTAF), World Scientific Publishing Co. Pte. Ltd., vol. 15(01), pages 1250007-1-1.
- L. C. G. Rogers, 1997. "The Potential Approach to the Term Structure of Interest Rates and Foreign Exchange Rates," Mathematical Finance, Wiley Blackwell, vol. 7(2), pages 157-176.
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