Leveraged ETFs

The investment world's love affair with ETFs continued in 2010, as more than 1,000 funds managed assets of $940 billion. Here's a review of the best and the worst performers, and a few reminders about how to use these investment vehicles safely.

Exchange-Traded Funds that use derivatives are among the most complex investments. Small wonder then that securities regulators are warning of the risks associated with inverse and leveraged ETFs, which are not designed for the casual investor.