MoneyWeek’s Tim Bennett explains what investment banks actually do- and how they earn their huge profits. MoneyWeek videos are made by MoneyWeek, the UK’s most popular financial magazine. Founded in 2000, MoneyWeek aims to provide intelligent and enjoyable commentary on the most important financial stories. It also tells you how to make money from the latest financial news. For more videos and exclusive content please visit http://moneyweek.com/video-tutorial/