At The start of 2012, a portfolio held by JPMorgan Chase’s Chief Investment Office kept breaching its risk limits. Then the bank adopted a new value-at-risk model, and the problem seemed to go away. The new model cut the portfolio’s reported risk roughly in half. Months afterward, the trades that https://ericklhdwr.celticwiki.com/2648858/when_the_risk_model_is_the_risk_what_institutions_know_about_algorithmic_trading_risk_management