随着巴塞尔协议的公布,操作风险(Operational Risk)的量化模型已经成为银行业目前研究的主要课题。本文按照巴塞尔协议规定,利用损失分布方法(Loss Distribution Approach,LDA)来度量操作风险,这种方法的优点在于分别度量损失事件发生...随着巴塞尔协议的公布,操作风险(Operational Risk)的量化模型已经成为银行业目前研究的主要课题。本文按照巴塞尔协议规定,利用损失分布方法(Loss Distribution Approach,LDA)来度量操作风险,这种方法的优点在于分别度量损失事件发生频度以及损失幅度,然后利用组合分布方法来研究一段时间内的累积损失分布。本文主要讨论在商业银行内部如何执行LDA以及引入操作风险在险值(Valueat Risk,VaR)的概念,并且介绍了能够反映损失分布的分布函数。同时按照巴塞尔协议公布的方法和策略,从损失事件类型、业务部门以及损失分布额度的估计方法探讨利用高级度量方法的可能性和现实性以及操作中的现实问题。展开更多
Operational risk events have severely impacted the development of third-party payment(TPP)platforms,and have even led to a discussion on the operational risk capital charge settlement by relevant international regulat...Operational risk events have severely impacted the development of third-party payment(TPP)platforms,and have even led to a discussion on the operational risk capital charge settlement by relevant international regulators.However,prior studies have mostly focused on qualitative mechanism analysis,and have rarely examined quantitative risk assessment based on actual operational risk events.Therefore,this study attempts to assess the operational risk on TPP platforms in China by constructing a systematic framework incorporating database construction and risk modeling.First,the operational risk database that covers 202 events between Q1,2014,and Q2,2020 is constructed.Then,specific causes are clarified,and the characteristics are analyzed from both the trend and loss severity perspectives.Finally,the piecewise-defined severity distribution based-Loss Distribution Approach(PSD-LDA)with double truncation is utilized to assess the operational risk.Two main conclusions are drawn from the empirical analysis.First,legal risk and external fraud risk are the two main causes of operational risk.Second,the yearly Value at Risk and Expected Shortfall are 724.46 million yuan and 1081.98 million yuan under the 99.9%significance level,respectively.Our results are beneficial for both TPP platform operators and regulators in managing and controlling operational risk.展开更多
文摘随着巴塞尔协议的公布,操作风险(Operational Risk)的量化模型已经成为银行业目前研究的主要课题。本文按照巴塞尔协议规定,利用损失分布方法(Loss Distribution Approach,LDA)来度量操作风险,这种方法的优点在于分别度量损失事件发生频度以及损失幅度,然后利用组合分布方法来研究一段时间内的累积损失分布。本文主要讨论在商业银行内部如何执行LDA以及引入操作风险在险值(Valueat Risk,VaR)的概念,并且介绍了能够反映损失分布的分布函数。同时按照巴塞尔协议公布的方法和策略,从损失事件类型、业务部门以及损失分布额度的估计方法探讨利用高级度量方法的可能性和现实性以及操作中的现实问题。
基金supported by grants from the National Natural Science Foundation of China(71425002,72101166)the Capital University of Economics and Business for the Fundamental Research Funds for Universities affiliated to Beijing(XRZ2021066).
文摘Operational risk events have severely impacted the development of third-party payment(TPP)platforms,and have even led to a discussion on the operational risk capital charge settlement by relevant international regulators.However,prior studies have mostly focused on qualitative mechanism analysis,and have rarely examined quantitative risk assessment based on actual operational risk events.Therefore,this study attempts to assess the operational risk on TPP platforms in China by constructing a systematic framework incorporating database construction and risk modeling.First,the operational risk database that covers 202 events between Q1,2014,and Q2,2020 is constructed.Then,specific causes are clarified,and the characteristics are analyzed from both the trend and loss severity perspectives.Finally,the piecewise-defined severity distribution based-Loss Distribution Approach(PSD-LDA)with double truncation is utilized to assess the operational risk.Two main conclusions are drawn from the empirical analysis.First,legal risk and external fraud risk are the two main causes of operational risk.Second,the yearly Value at Risk and Expected Shortfall are 724.46 million yuan and 1081.98 million yuan under the 99.9%significance level,respectively.Our results are beneficial for both TPP platform operators and regulators in managing and controlling operational risk.
