CWB - Barclays Capital Convertible Bond ETF. The investment objective of the Fund is to provide investment results that correspond generally to the price and yield performance of an index that tracks the U.S. convertible bonds with outstanding issue sizes greater than dollar 500 million. The Fund uses a passive management strategy designed to track the price and yield of the Barclays Capital U.S. Convertible Bond greater than 500 million Index. Started in April, 2009. 0.40% expense ratio.