PowerShares Lux Nanotech Portfolio (the Fund) seeks investment results that correspond to the price and yield of the Lux Nanotech Index (the Index). The Fund will invest at least 90% of its total assets in common stocks that comprise the Index. The Index is designed to identify a group of companies involved in developing, manufacturing and funding nanotechnology applications. Companies may be involved in one or more stages of Lux's Nanotechnolgy Value Chain frameworks: Nanomaterials, Nanointermediates, Nano-enabled Products and Nanotools. The Fiund's market-cap portfolio is rebalanced quarterly and reconstituted quarterly. The Fund’s investment advisor is Invesco PowerShares Capital Management LLC.