Search Results for author: Jörn Sass

Found 3 papers, 0 papers with code

Robust Utility Maximization in a Multivariate Financial Market with Stochastic Drift

no code implementations30 Sep 2020 Jörn Sass, Dorothee Westphal

This leads to local optimization problems, and the resulting optimal strategy needs to be updated continuously in time.

Portfolio Optimization

Robust Utility Maximizing Strategies under Model Uncertainty and their Convergence

no code implementations4 Sep 2019 Jörn Sass, Dorothee Westphal

In this paper we investigate a utility maximization problem with drift uncertainty in a multivariate continuous-time Black-Scholes type financial market which may be incomplete.

Diffusion Approximations for Expert Opinions in a Financial Market with Gaussian Drift

no code implementations2 Jul 2018 Jörn Sass, Dorothee Westphal, Ralf Wunderlich

We use our limit theorems to derive so-called diffusion approximations of the filter for high-frequency discrete-time expert opinions.

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