Quants weigh up VAR's flawed alternatives

VAR at risk

John Hull

After 16 years as the regulator-approved standard for the calculation of trading book capital, value-at-risk could soon end up on the scrapheap. The Basel Committee on Banking Supervision is preparing to launch a review of trading book rules, and sources say one stream of work will look at alternatives to VAR, such as expected shortfall – which aims to do a better job of capturing potential losses in difficult market conditions.

That reflects one of the charges levelled at VAR in recent years

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