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We model the new quantitative aspects of market risk management for banks that Basel established in 2016 and came into effect in January 2019. Market risk is measured by Conditional Value at Risk (CVaR) or Expected Shortfall at a confidence level of 97.5%. The regulatory backtest remains largely...
Persistent link: https://www.econbiz.de/10013247097
Our data, relating to a period of extreme market turmoil, show typical leptokurtosis and skewness, leading us to consider the skewed exponential power distribution of Fernández et al. (1995), referred to as the SEP3. We demonstrate that the conditional forecasting of VaR and CVaR, made up of a...
Persistent link: https://www.econbiz.de/10013404374
We demonstrate how a mixture of two SEP3 densities (skewed exponential power distribution of Fernández et al., 1995) can model the conditional forecasting of VaR and CVaR to efficiently cover market risk at regulatory levels of 1% and 2.5%, as well as at the additional 5% level. Our data...
Persistent link: https://www.econbiz.de/10014355816
Under the Basel II regulatory framework non-negligible statistical problems arise when backtesting risk measures. In this setting backtests often become infeasible due to a low number of violations leading to heavy size distortions. According to Escanciano and Olmo (2010, 2011) these problems...
Persistent link: https://www.econbiz.de/10010344866
We study a class of backtests for forecast distributions in which the test statistic is a spectral transformation that weights exceedance events by a function of the modeled probability level. The choice of the kernel function makes explicit the user's priorities for model performance. The class...
Persistent link: https://www.econbiz.de/10011927115
propose two simple hypothesis tests based only on results of probability theory without requiring any approximation or … function approach, any comparison among forecasting outcomes of different risk models appeared to be meaningless. A series of …
Persistent link: https://www.econbiz.de/10012936007
EU legislators mandated the European Banking Authority to propose a stress scenario methodology for capitalising non-modellable risk factors (NMRF) as foreseen under the Basel Fundamental Review of the Trading Book (FRTB) rules for market risk. In this paper, we present the foundations of such a...
Persistent link: https://www.econbiz.de/10012594975
tests as well as asymptotic theory. Not only do the generalized tests have power against k'th order dependence by definition …
Persistent link: https://www.econbiz.de/10013011572
In line with regulations and common risk management practice, the credit risk of a portfolio is managed via its potential future exposures (PFEs), expected exposures (EEs), and related measures, the expected positive exposure (EPE), effective expected exposure (EEE), and the effective expected...
Persistent link: https://www.econbiz.de/10012973703
The US dollar is the most widely held currency in the world. In recent years, however, it suffered huge depreciation. In this paper, various risk models are used to forecast the Value-at-Risk (VaR) in holding the currency. Being a quantile measure, VaR disregards valuable information conveyed by...
Persistent link: https://www.econbiz.de/10014222328