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. The new model roughly halved the portfolio’s reported risk. Within months, the trades later known as the “London https://elliottztmga.dsiblogger.com/76728829/the-number-that-said-it-was-safe-institutional-lessons-in-algorithmic-trading-risk-management