Best and Worst ETFs of 2011

By Ben Steverman - 2011-12-20T03:31:39Z

Photograph by Tony Avelar/Bloomberg

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Powershares WilderHill Clean Energy Portfolio

Total return: -45.9%

Fund company: Invesco PowerShares Capital Management

Industry focus: Environmentally friendly

Fund ticker/Total assets: PBW, $224 million

Top holdings, with 2011 total return:

Amerigon (ARGN), +45%

Ameresco (AMRC), -19%

Tesla Motors (TSLA), +25% (pictured)