QGRD -- up 6.24 percent from the previous week -- is composed of companies that are primarily involved in the electric grid; electric meters, devices, and networks; energy storage and management; and enabling software used by the smart grid and electric infrastructure sector. Of QGRD's 21 pure play components, 18 experienced gains, two saw losses, and one ended the week unchanged.

QGRD's best pure play performer was ESCO Technologies ( ESE), up 21.12 for the week.

Rounding out the top five pure play performers were Power-One ( PWER) , growing 20 percent; demand energy management firm Comverge ( COMV), rising 14.62 percent; electrical infrastructure contractor MYR Group ( MYRG), 13.26 percent higher; and electrical equipment manufacturer AZZ ( AZZ) , rising 12.04percent.

QGRD's worst performers included energy storage technology developer NGK Insulators ( 53330) , losing 3.81 percent; Itron ( ITRI), down 3.77 percent; Italy-based energy cable provider Prysmian ( PRY) , unchanged for the week; renewable energy inverter maker SMA Solar Technology ( S92), up 1.08 percent; and transformer, substation, and switchgear maker Jinpan International ( JST) , higher by 1.34 percent.

This information is not intended to be used as a guide to investing, and the authors make no guarantees that any investments based on the information contained herein will benefit you in specific applications, owing to the risk that is involved in investing of almost any kind. For more on Clean Edge's stock indexes - including methodology, components, historical performance, financial products and licensing information, please visit www.cleanedge.com/ceindex.
Clean Edge, Inc., founded in 2000, is the world's first research and publishing firm devoted to the clean-tech sector. The company, via its publications, events, and online services, helps companies, investors, and governments understand and profit from clean technologies. Clean Edge, with offices in the San Francisco Bay Area and Portland Oregon, offers insight and intelligence on emerging clean-tech trends, opportunities, and challenges. The company publishes a range of reports including the annual Clean Energy Trends and Clean Tech Job Trends report series; hosts the annual Clean-Tech Investor Summit (along with IBF); maintains a number of benchmark clean-tech stock indices with NASDAQ OMX including CELS, QGRD, and QWND; and produces Clean Edge Jobs, a leading online jobs board for clean-tech job seekers, employers, and recruiters. To keep abreast of the latest clean-tech news; access industry reports; learn more about our services; or sign up for our free e-newsletters; visit CleanEdge.com.

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