At The start of 2012, a portfolio held by JPMorgan Chase’s Chief Investment Office kept breaching its risk limits. Then a new value-at-risk model was introduced, and the problem appeared to disappear. Under the new model, the portfolio’s reported risk fell by roughly half. Months later, the trades that became https://quantitativetradingresear85173.wikiexpression.com/7407630/the_number_that_said_it_was_safe_algorithmic_trading_risk_management_the_institutional_way