In einer Währungsunion besteht für die Mitgliedsländer keine Möglichkeit mehr, durch eine vorübergehende Störung verursachte binnenwirtschaftliche Ungleichgewichte mittels Anpassung des nominalen Wechselkurses zu korrigieren. Wenn die supranationale Geldpolitik unionsweiten, die nationale...

This paper characterizes the optimal risk-taking strategies of mutual fund managers competing in multi-period winner-take-all tournaments. With competition among mutual funds, every fund begins by taking maximum risk. In the final period, all funds continue to take maximum risk except possibly...

We study a dynamic mean-variance portfolio optimization problem under the reinforcement learning framework, where an entropy regularizer is introduced to induce exploration. Due to the time-inconsistency involved in a mean-variance criterion, we aim to learn an equilibrium strategy. Under an...

Evolutionary Finance focuses on questions of "survival and extinction" of investment strategies (portfolio rules) in the market selection process. It analyzes stochastic dynamics of financial markets in which asset prices are determined endogenously by a short-run equilibrium between supply and...

A common view of sovereign debt markets is that they are prone to multiple equilibria. We show that such multiplicity does not exist in the infinite-horizon model of Eaton and Gersovitz (1981), a widely adopted benchmark for analyses of these markets. When the value from government default is...