no code implementations • 11 Feb 2024 • Cathy W. S. Chen, Takaaki Koike, Wei-Hsuan Shau
This research incorporates realized volatility and overnight information into risk models, wherein the overnight return often contributes significantly to the total return volatility.
no code implementations • 22 Jan 2024 • Takaaki Koike, Cathy W. S. Chen, Edward M. H. Lin
In an empirical analysis of stock returns we evaluate and compare a variety of models for forecasting dynamic ES contributions and demonstrate the outstanding performance of the proposed model.
no code implementations • 6 May 2020 • Takaaki Koike, Marius Hofert
We show that various distributional properties of this conditional distribution, such as modality, dependence and tail behavior, are inherited from those of the underlying joint loss distribution.
no code implementations • 28 Apr 2020 • Takaaki Koike, Yuri F. Saporito, Rodrigo S. Targino
This paper is concerned with the process of risk allocation for a generic multivariate model when the risk measure is chosen as the Value-at-Risk (VaR).
no code implementations • 25 Sep 2019 • Takaaki Koike, Marius Hofert
We propose a novel framework of estimating systemic risk measures and risk allocations based on Markov chain Monte Carlo (MCMC) methods.