It happens at most major investment banks, although to my knowledge the mandatory "two weeker" is generally limited to employees who manage risk like traders. I

It happens at most major investment banks, although to my knowledge the mandatory "two weeker" is generally limited to employees who manage risk like traders. It forces another person on the trading desk to be responsible for their carried positions which should help identify any mismarking or other types of fraud. https://www.wsj.com/articles/SB10000872396390444914904577615483583558306 https://www.wsj.com/articles/SB10000872396390444914904577615...