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Clean Edge Stock Indices Rebound Slightly

Stocks in this article: MBLX AMSC AONE

NEW YORK ( TheStreet) -- Clean Edge and Nasdaq's three benchmark clean-tech stock indices all rebounded slightly last week with the Nasdaq Clean Edge Green Energy Index (CELS) up 4.14%, the Nasdaq OMX Clean Edge Global Wind Energy Index (QWND) gaining 2.67%, and the Nasdaq OMX Clean Edge Smart Grid Infrastructure Index (QGRD) 5.92% higher from the previous week.

The overall market saw similar movement last week -- the S&P 500 rose 2.23%, Nasdaq grew 3.58%, and AMEX Oil was 0.65% higher.

CELS -- up 4.14% for the week and 21.69% higher than a year ago -- tracks U.S.-listed clean-energy companies and is divided into four categories: advanced materials; energy intelligence; energy storage and conversion; and renewable electricity generation and renewable fuels. Of the 53 total component securities, 41 experienced gains, 11 lost ground, and one remained unchanged from the previous week's close.

CELS' best performer for the week was biomaterials maker Metabolix (MBLX), gaining 34.42%. Rounding out the top five CELS performers were power technology developer American Superconductor (AMSC), up 23.59%; energy storage product maker A123 Systems (AONE), higher by 19.00%; electronic materials provider Rubicon Technology (RBCN), rising 18.03%; and OLED developer Universal Display Corporation (PANL), up 17.32%.

CELS' worst performer last week was solar product manufacturer SunPower Corporation (SPWRA), declining 9.06%. Other worst performers included electric motor technology developer UQM Technologies (UQM), falling 3.57%; energy management service provIder Comverge (COMV), losing 2.71%; semiconductor maker Fairchild Semiconductor (FCS), down 2.19%; and solar wafer manufacturer ReneSola (SOL), losing 1.97%.

QWND -- up 2.67% last week but 14.09% lower in the last 12 months - includes companies that are primarily manufacturers, developers, distributors, installers, and users of energy derived from wind sources. Of QWND's 21 pure play components, 16 experienced gains, four saw losses, and one ended the week unchanged.

QWND's best pure play performer for the week was American Superconductor, up 23.59%. Other top pure play performers included carbon fiber composite manufacturer Zoltek Companies (ZOLT) , gaining 14.33%; gearbox and drive train maker Hansen Transmissions International (HSN) , rising 8.98%; wind turbine part supplier China High Speed Transmission Equipment Group (0658), growing 7.34%; and wind turbine manufacturer Vestas Wind Systems (VWS), up 7.29% for the week.

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