“The single best opportunity to invest is distressed debt in energy,” David M. Rubenstein, co-founder of the Carlyle Group, said in January at the World Economic Forum in Davos, Switzerland. Mr. Rubenstein added that one promising strategy might be to “buy the debt at a discount and take control of these companies.” The Blackstone Group and Apollo Global Management say that they are raising billions of dollars to invest in energy assets.

via Slump in Oil Prices Brings Pressure, and Investment Opportunity – NYTimes.com.