Predictable Relative Forward Performance Processes: Multi-Agent and Mean Field Games for Portfolio Management

Gechun Liang, Moris S. Strub and Yuwei Wang

Papers from arXiv.org

Abstract: We introduce predictable relative forward performance processes (PRFPP) as a new framework for studying portfolio management within a competitive and incomplete market environment. Each agent trades a distinct stock following a binomial distribution with probabilities for a positive return depending on the market regime characterized by a non-traded stochastic factor. For both the finite population and mean field games, we construct and analyse PRFPPs for initial data of the CARA class along with the associated equilibrium strategies. We find that relative performance concerns do not necessarily lead to more investment in the risky asset compared to when there are no such concerns. Under some parameter constellations, agents short a stock with positive expected excess return. The binomial market setting facilitates a straightforward adjustment of risky asset skewness, enabling an analysis of its impact on investment behavior, an aspect that continuous-time frameworks cannot capture.

Date: 2023-11, Revised 2026-05
New Economics Papers: this item is included in nep-gth
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