QCLN

First Trust NASDAQ® Clean Edge® U.S. Liquid Series Index Fund (QCLN)
http://www.ftportfolios.com/Retail/etf/ETFholdings.aspx?Ticker=QCLN

I don't know why they call it liquid series? Perhaps they trade a lot?

First Solar, Inc. FSLR 8.19 %
Suntech Power Holdings Co., Ltd. (ADR) STP 7.88 %
MEMC Electronic Materials, Inc. WFR 7.83 %
Linear Technology Corporation LLTC 7.83 %
SunPower Corporation SPWR 6.21 %
Itron, Inc. ITRI 3.92 %
AVX Corporation AVX 3.28 %
ON Semiconductor Corporation ONNN 3.13 %
Ormat Technologies Inc. ORA 3.10 %
Cree, Inc. CREE 3.01 %
Hexcel Corporation HXL 2.92 %
International Rectifier Corporation IRF 2.80 %
Microsemi Corporation MSCC 2.39 %
Graftech International Ltd. GTI 2.35 %
Fairchild Semiconductor International, Inc. FCS 2.30 %
Evergreen Solar, Inc. ESLR 2.21 %
JA Solar Holdings Co. Ltd.- ADR JASO 1.98 %
Zoltek Companies, Inc. ZOLT 1.89 %
Baldor Electric Company BEZ 1.83 %
Energy Conversion Devices, Inc. ENER 1.61 %
VeraSun Energy VSE 1.50 %
Yingli Green Energy Holding Co.-ADR YGE 1.44 %
American Superconductor Corporation AMSC 1.40 %
EnerNOC, Inc. ENOC 1.10 %
LDK Solar Company Ltd. (ADR) LDK 1.10 %
Power Integrations, Inc. POWI 1.09 %
Echelon Corporation ELON 1.05 %
Trina Solar Limited (ADR) TSL 1.03 %
US BioEnergy Corp. USBE 0.99 %
EMCORE Corporation EMKR 0.95 %
Fuelcell Energy Inc FCEL 0.92 %
Canadian Solar Inc. CSIQ 0.86 %
Comverge Inc. COMV 0.83 %
Ballard Power Systems Inc. BLDP 0.83 %
Greatbatch Inc. GB 0.74 %
Metabolix, Inc MBLX 0.64 %
Aventine Renewable Energy Holdings, Inc. AVR 0.62 %
Vicor Corporation VICR 0.56 %
O2Micro International Limited OIIM 0.51 %
Advanced Analogic Technologies, Inc. AATI 0.51 %
Medis Technologies Ltd. MDTL 0.49 %
Plug Power Inc PLUG 0.42 %
Pacific Ethanol, Inc. PEIX 0.41 %
Verenium Corporation VRNM 0.39 %
Nova Biosource Fuels, Inc. NBF 0.37 %
Altair Nanotechnologies, Inc. ALTI 0.37 %
China BAK Battery, Inc. CBAK 0.35 %
Power-One, Inc. PWER 0.35 %
Capstone Turbine Corporation CPST 0.33 %
IXYS Corporation IXYS 0.31 %
Hoku Scientific, Inc. HOKU 0.26 %
Maxwell Technologies Inc MXWL 0.24 %
MGP Ingredients, Inc. MGPI 0.22 %