N-player and mean-field games in Itô-diffusion markets with competitive or homophilous interaction

R Hu, T Zariphopoulou - … Analysis, Filtering, and Stochastic Optimization: A …, 2022 - Springer
In Itô-diffusion environments, we introduce and analyze N-player and common-noise mean-
field games in the context of optimal portfolio choice in a common market. The players invest …

Nash equilibria for relative investors via no-arbitrage arguments

N Bäuerle, T Göll - Mathematical Methods of Operations Research, 2023 - Springer
Within a common arbitrage-free semimartingale financial market we consider the problem of
determining all Nash equilibrium investment strategies for n agents who try to maximize the …

Robust non-zero-sum investment–consumption games under multivariate stochastic covariance models

Y Zhang, H Zhu - The Quarterly Review of Economics and Finance, 2025 - Elsevier
This paper discusses a non-zero-sum stochastic differential game involving multiple players
and model ambiguity. Each economic agent is concerned about the relative performance of …

Price impact, strategic interaction and portfolio choice

G Curatola - The North American Journal of Economics and Finance, 2022 - Elsevier
This paper studies the portfolio choice of two large investors who act strategically because
their trading affects interest rates. Each investor chooses her optimal portfolio conditional on …

Submission costs in risk-taking contests

M Whitmeyer - Games and Economic Behavior, 2023 - Elsevier
This paper investigates stochastic continuous time contests with a twist: the designer
requires that contest participants incur some cost to submit their entries. When the designer …

[PDF][PDF] Expected Utility Maximization for Competitive Agents

T Göll - 2023 - scholar.archive.org
The general idea behind portfolio optimization problems is the following: An investor,
endowed with some fixed initial capital x∈ R, has to decide how many shares of which …

Competitive optimal portfolio selection in a non-Markovian financial market: A backward stochastic differential equation study

G Wang, ZQ Xu, P Zhang - arXiv preprint arXiv:2408.02286, 2024 - arxiv.org
This paper studies a competitive optimal portfolio selection problem in a model where the
interest rate, the appreciation rate and volatility rate of the risky asset are all stochastic …

[PDF][PDF] Portfolio choice of large investors who interact strategically

G Curatola - Formerly available at SSRN, 2019 - papers.ssrn.com
This paper studies the portfolio choice of two large investors who act strategically because
their trading affects expected stock returns. Each investor chooses her optimal portfolio …

Portfolio Selection in Contests

Y Lu, ASL Tse - Available at SSRN 4912341, 2024 - papers.ssrn.com
In an investment contest with incomplete information, a finite number of agents dynamically
trade assets with idiosyncratic risk and are rewarded based on the relative ranking of their …

Submission Fees in Risk-Taking Contests

M Whitmeyer - arXiv preprint arXiv:2108.13506, 2021 - arxiv.org
This paper investigates stochastic continuous time contests with a twist: the designer
requires that contest participants incur some cost to submit their entries. When the designer …