A partial stochastic equilibrium model and its limiting behaviour

Alessandro Prosperi

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arXiv · 2211.17231

A partial stochastic equilibrium model and its limiting behaviour

Alessandro Prosperi

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Abstract

The existence of a (partial) market equilibrium price is proved in a complete, continuous time finite-agent market setting. The economic agents act as price takers in a fully competitive setting and maximize exponential utility from terminal wealth. As the number $N$ of economic agents goes to infinity, the BSDE system of $N$ equations characterizing the equilibrium asset price dynamics decouples. Due to the system's symmetry, the influence of the mean field of the agents, conditionally on the common noise, becomes deterministic.

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Alessandro Prosperi. 2022-11-30. A partial stochastic equilibrium model and its limiting behaviour. https://arxiv.org/abs/2211.17231

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