Invesco PowerShares Capital Management LLC has announced that its global wind energy portfolio began trading 1 July 2008 on the Nasdaq Stock Market.

The PowerShares Global Wind Energy Portfolio (PWND) is based on the NASDAQ OMX Clean Edge Global Wind Energy Index. This index includes companies that are primarily manufacturers, developers, distributors, installers and users of energy derived from wind sources. The Index selects companies listed on global stock exchanges and uses a modified market capitalization-weighted methodology, with consideration to trading volume and float-adjusted market capitalization minimums. The index is reconstituted semi-annually and rebalanced quarterly.