A market-based martingale valuation approach to optimum inventory control in a doubly stochastic jump-diffusion economy

A market-based martingale valuation approach to optimum inventory control in a doubly stochastic jump-diffusion economy

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Article ID: iaor201525421
Volume: 66
Issue: 3
Start Page Number: 405
End Page Number: 420
Publication Date: Mar 2015
Journal: Journal of the Operational Research Society
Authors: , ,
Keywords: demand, management, stochastic processes, economics
Abstract:

We propose a novel market‐based approach to optimum inventory control in a doubly stochastic jump‐diffusion economy by modelling a commodity distributor’s inventory investment as a portfolio of forward commitments with explicit accounting of the jump‐diffusion dynamics of demands, costs, and prices in open markets. We apply the robust real‐asset martingale valuation methodology to derive a closed‐form solution for the inventory value and a simple and intuitive optimality condition. Numerical analysis verifies this condition and demonstrates that the resulting optimum policy has robust properties in relation to the stylized effects.

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