The investment seeks investment results that closely correspond, before fees and expenses, to the performance of the Morningstar® US Mid Cap Target Market Exposure Extended IndexSM. The fund will invest at least 80% of its assets in securities included in the underlying index. The underlying index consists of equity securities primarily traded in the United States and targets those securities that fall between the 85th and 95th percentiles in market capitalization of the free float adjusted investable universe.