no code implementations • 9 Dec 2023 • Marcin Pitera, Thorsten Schmidt, Łukasz Stettner
The assessment of risk based on historical data faces many challenges, in particular due to the limited amount of available data, lack of stationarity, and heavy tails.
no code implementations • 3 Oct 2023 • Marcin Pitera, Miklós Rásonyi
In this short paper we introduce a new class of performance measures based on certainty equivalents defined via scaled utility functions.
no code implementations • 21 Jul 2022 • Weronika Ormaniec, Marcin Pitera, Sajad Safarveisi, Thorsten Schmidt
Estimating value-at-risk on time series data with possibly heteroscedastic dynamics is a highly challenging task.
no code implementations • 25 Jan 2022 • Marcin Pitera, Thorsten Schmidt
While the estimation of risk is an important question in the daily business of banking and insurance, many existing plug-in estimation procedures suffer from an unnecessary bias.
no code implementations • 8 Jan 2022 • Marcin Pitera, Łukasz Stettner
In this paper we consider a discrete-time risk sensitive portfolio optimization over a long time horizon with proportional transaction costs.
no code implementations • 20 Oct 2020 • Marcin Pitera, Thorsten Schmidt
While the {estimation} of risk is an important question in the daily business of banking and insurance, many existing plug-in estimation procedures suffer from an unnecessary bias.
no code implementations • 26 Feb 2019 • Tomasz R. Bielecki, Igor Cialenco, Marcin Pitera, Thorsten Schmidt
In this paper we develop a novel methodology for estimation of risk capital allocation.