Early In 2012, a portfolio in JPMorgan Chase’s Chief Investment Office was running over its risk limits. Then a new value-at-risk model arrived, and the problem seemed to vanish. The new model roughly halved the portfolio’s reported risk. Months later, the trades that became known as the “London Whale” had https://ai-trading-system-develop39406.wikijournalist.com/685751/the_number_that_said_it_was_safe_algorithmic_trading_risk_management_the_institutional_way