Matthew A. Winkler, Columnist

Investors Are Learning That Clean Tech Pays

The stock performance of green companies shows that climate change is also a business opportunity.

Bottom line. 

Photographer: Justin Chin/Bloomberg
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The American companies most reliant on embracing green technology are outperforming every broad measure of the stock market, delivering a greater return last year than all but two (Russia and Greece) of the world’s 94 leading equity indexes.

These are the 92 publicly traded firms with at least 10% of their revenues derived from clean energy, energy efficiency or clean technology, according to data compiled by Bloomberg New Energy Finance. They're proving that the threat of climate change is also an investor's opportunity.