Clean Edge and Nasdaq's three benchmark clean-tech stock indices ended a calm week, with the Nasdaq Clean Edge Green Energy Index (CELS) down 0.01%, the Nasdaq Clean Edge Global Wind Energy Index (QWND) 1.84% lower, and the Nasdaq OMX Clean Edge Smart Grid Infrastructure Index (QGRD) climbing 0.76%.
The overall market also saw tepid movement for the week -- the S&P 500 gained 0.04%, the Nasdaq was down 0.18% and Amex Oil ended the week down 1.87%.
CELS -- down 0.01% for the week and up 48.82% from 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.
In the advanced materials sector, one of the five component companies was in positive territory. Energy intelligence, the most populated sector of the index, saw eight of its 20 components gain ground. Energy storage and conversion had nine components in the red and only one gaining. For renewable electricity and fuels, nine components were up, four lost ground, and two ended the week unchanged.