In Early 2012, a portfolio inside JPMorgan Chase’s Chief Investment Office was breaching its risk limits. Then a new value-at-risk model was introduced, and the problem appeared to disappear. The new model roughly halved the portfolio’s reported risk. Months afterward, the trades that came to be called the “London Whale” https://jaidenrmgyr.wikipowell.com/7482245/the_number_that_said_it_was_safe_algorithmic_trading_risk_management_the_institutional_way