A recent survey from Washington, D.C.-based consulting firm PFC Energy concludes that oil and gas companies in the East, from countries such as Russia and China, are gaining more of a share of the global energy market. The report, The Definitive Annual Ranking of the World's Largest Listed Energy Firms, ranks 50 of the world's largest publically-traded energy companies (see related tables) based on annual market capitalization levels. Overall, the combined value of the top 50 companies on PFC's list has fluctuated significantly in the past. However, in 2010, it remained virtually unchanged at $3.9 trillion, 27% lower than the landmark $5.2 trillion level achieved three years ago at oil prices not far from current levels. In fact, the group's combined value has risen less than the WTI oil price (+15%) and the S&P 500 index (+13%) in the past year, PFC noted.
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