Reasonableness and Correctness for Operational Value-at-Risk
DOI:
https://doi.org/10.58567/eal02030005Keywords:
Value at Risk; Central Limit Theorem; Loss Distribution; Loss Sum; Operational Risk; Regulatory CapitalAbstract
Calculating the amount of regulatory capital to cover unexpected losses due to operational events in the upcoming year has caused problems because of difficulties in fitting probability distributions to data. It is consequently difficult to judge an appropriate level of capital that reflects the risk profile of a financial institution. We provide theoretical and empirical analyses to link the calculated capital to the sum of losses using appropriate statistical approximations. We conclude that, in order to reasonably reflect the associated risk, the capital should be approximately half the sum of losses, with a wide bound for the ratio of capital to sum.
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