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Assessing financial stability in turbulent times : a study of generalized autoregressive conditional heteroskedasticity-type Value-at-Risk model performance in Thailand's transport...

Danai Likitratcharoen; Lucksuda Suwannamalik - In: Risks : open access journal 12 (2024) 3, pp. 1-19

of VaR approaches. This study critically evaluates the efficacy of GARCH-type VaR models within the transportation sector … GARCH-type VaR models include GARCH (1,1) VaR, ARMA (1,1)-GARCH (1,1) VaR, GARCH (1,1)-M VaR, IGARCH (1,1) VaR, EWMA VaR … surpasses GARCH-type VaR models in failure rate accuracy. Within the GARCH-type category, the EWMA VaR model exhibited superior …

Persistent link: https://www.econbiz.de/10014497424

An academic response to Basel 3.5

Embrechts, Paul; Puccetti, Giovanni; Rüschendorf, Ludger; … - In: Risks : open access journal 2 (2014) 1, pp. 25-48

Recent crises in the financial industry have shown weaknesses in the modeling of Risk-Weighted Assets (RWAs). Relatively minor model changes may lead to substantial changes in the RWA numbers. Similar problems are encountered in the Value-at-Risk (VaR)-aggregation of risks. In this article, we...

Persistent link: https://www.econbiz.de/10010338097

The impact of systemic risk on the diversification benefits of a risk portfolio

Busse, Marc; Dacorogna, Michel M.; Katz, Marie - In: Risks : open access journal 2 (2014) 3, pp. 260-276

Risk diversification is the basis of insurance and investment. It is thus crucial to study the effects that could limit it. One of them is the existence of systemic risk that affects all of the policies at the same time. We introduce here a probabilistic approach to examine the consequences of...

Persistent link: https://www.econbiz.de/10010399713

Market risk analysis of energy in vietnam

Ngoc Phu Tran; Thang Cong Nguyen; Duc Hong Vo; McAleer, … - In: Risks : open access journal 7 (2019) 4/112, pp. 1-13

The purpose of this paper is to evaluate and estimate market risk for the ten major industries in Vietnam. The focus of the empirical analysis is on the energy sector, which has been designated as one of the four key industries, together with services, food, and telecommunications, targeted for...

Persistent link: https://www.econbiz.de/10012127865

Practice oriented and Monte Carlo based estimation of the value-at-risk for operational risk measurement

Greselin, Francesca; Piacenza, Fabio; Zitikis, Ričardas - In: Risks : open access journal 7 (2019) 2/50, pp. 1-20

We explore the Monte Carlo steps required to reduce the sampling error of the estimated 99.9% quantile within an acceptable threshold. Our research is of primary interest to practitioners working in the area of operational risk measurement, where the annual loss distribution cannot be...

Persistent link: https://www.econbiz.de/10012019128

Managing meteorological risk through expected shortfall

Stefani, Silvana; Kutrolli, Gleda; Moretto, Enrico; … - In: Risks : open access journal 8 (2020) 4/118, pp. 1-23

This paper focuses on weather derivatives as efficient risk management instruments and proposes a more advanced approach for their pricing. An "hybrid" contract is introduced, combining insurance properties, specifically tailored for the region under study and introducing Value-at-Risk (VaR) and...

Persistent link: https://www.econbiz.de/10012390452

Multi-variate risk measures under Wasserstein barycenter

Arias-Serna, M. Andrea; Loubes, Jean Michel; … - In: Risks : open access journal 10 (2022) 9, pp. 1-15

When the uni-variate risk measure analysis is generalized into the multi-variate setting, many complex theoretical and applied problems arise, and therefore the mathematical models used for risk quantification usually present model risk. As a result, regulators have started to require that the...

Persistent link: https://www.econbiz.de/10013368725

Optimal reinsurance under the linear combination of risk measures in the presence of reinsurance loss limit

Xiong, Qian; Peng, Zuoxiang; Nadarajah, Saralees - In: Risks : open access journal 11 (2023) 7, pp. 1-26

Optimal reinsurance problems under the risk measures, such as Value-at-Risk (VaR) and Tail-Value-at-Risk (TVaR), have been studied in recent literature. However, losses based on VaR may be underestimated and TVaR allows us to account better for catastrophic losses. In this paper, we propose a...

Persistent link: https://www.econbiz.de/10014340271

Multivariate spectral backtests of forecast distributions under unknown dependencies

Balter, Janine; McNeil, Alexander J. - In: Risks : open access journal 12 (2024) 1, pp. 1-15

Under the revised market risk framework of the Basel Committee on Banking Supervision, the model validation regime for internal models now requires that models capture the tail risk in profit-and-loss (P&L) distributions at the trading desk level. We develop multi-desk backtests, which...

Persistent link: https://www.econbiz.de/10014480976

On the diversification effect in solvency II for extremely dependent risks

Chen, Yongzhao; Cheung, Ka Chun; Yam, Sheung Chi Phillip; … - In: Risks : open access journal 11 (2023) 8, pp. 1-22

In this article, we investigate the validity of diversification effect under extreme-value copulas, when the marginal risks of the portfolio are identically distributed, which can be any one having a finite endpoint or belonging to one of the three maximum domains of attraction. We show that...

Persistent link: https://www.econbiz.de/10014370410