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arXiv 2106.06185q-fin.MF
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平均场投资组合博弈

Mean Field Portfolio Games

Guanxing Fu, Chao Zhou

摘要:

我们研究了随机市场参数下的平均场投资组合博弈,其中每个参与者不仅关注自己的财富,而且关注与竞争对手的相对表现。我们使用鞅最优性原理的方法来描述唯一的纳什均衡在一个平均场FBbands与二次增长,这是可解的弱相互作用的假设。基于弱相互作用假设,我们建立了竞争参数的幂次渐近展开结果。当市场参数不依赖于布朗路径时,我们得到了纳什均衡的封闭形式。

英文摘要:

We study mean field portfolio games with random market parameters, where each player is concerned with not only her own wealth but also relative performance to her competitors. We use the martingale optimality principle approach to characterize the unique Nash equilibrium in terms of a mean field FBSDE with quadratic growth, which is solvable under a weak interaction assumption. Motivated by the weak interaction assumption, we establish an asymptotic expansion result in powers of the competition parameter. When the market parameters do not depend on the Brownian paths, we obtain the Nash equilibrium in closed form.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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