Clean Edge Indices Fell Last Week

Clean Edge and Nasdaq's three benchmark clean-tech stock indexes experienced rough movement last week with the Nasdaq Clean Edge Green Energy Index(CELS) down 8.69 percent, the Nasdaq OMX Clean Edge Global Wind Energy Index(QWND) falling 5.18 percent, and the Nasdaq OMX Clean Edge Smart Grid Infrastructure Index(QGRD) 7.07 percent lower from the previous week.

The overall market was also lower: the S&P 500 lost 3.78 percent, Nasdq fell 5.02 percent, and AMEX Oil was 4.19 percent lower from the previous week.

CELS -- down 8.69 percent for the week and 6.96 percent lower 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, three experienced gains, 48 experienced losses, and two ended the week unchanged.

CELS' best performer for the week was wafer manufacturer MEMC Electronic Materials(WFR), gaining 4.91 percent.

Rounding out the top five CELS performers were OLED developer Universal Display(PANL), up 1.34 percent; fuel cell maker Ballard Power Systems(BLDP), higher by 0.59 percent; energy storage technology developer Advanced Battery Technologies(ABAT), unchanged; and semiconductor manufacturer IXYS Corporation(IXYS), also unchanged for the week.

CELS' worst performer last week was energy storage technology developer A123 Systems(AONE), declining 28.56 percent.

Other poor performers included microturbine maker Capstone Turbine(CPST), losing 27.84 percent; wind energy product and service provider Broadwind Energy(BWEN), down 27.72 percent; solar and LED manufacturing equipment provider Veeco Instruments(VECO), retreating 21.60 percent; and LED technology developer Cree(CREE), 19.63 percent lower.

QWND -- down 5.18 percent last week and 32.28 percent 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, 5 experienced gains and 16 lost ground.

QWND's best pure play performer for the week was wind turbine manufacturer Clipper Windpower(CWP), up 23.76 percent.

Other top pure play performers included wind farm developer China Longyuan Power Group, gaining 3.82 percent; wind turbine manufacturer Vestas Wind Systems(VWS), rising 3.25percent; Greece-based renewable energy project developer TENERGY, growing 1.66 percent; and wind energy project developer China Windpower Group Limited, 1.30 percent higher.

QWND's worst pure play performers were Broadwind Energy(BWEN), losing 27.72 percent; renewable energy project developer Gamesa Corporacion Tecnologica(GAM), down 12.21 percent; advanced material developer Zoltek Companies(ZOLT), losing 11.19 percent; Denmark-based renewable energy developer Greentech Energy Systems(GES), declining 9.82 percent; and wind power project developer and operator Japan Wind Development Co. falling 9.51 percent from the previous week.

QGRD -- 7.07 percent lower 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, oneexperienced positive movement, 19 saw losses, and one ended the week unchanged.