XTO claims about 45 trillion cubic feet of gas, much of it trapped in tight formations known as shale. Shares in the company jumped 16 percent, or $6.64, to $48.13 in early trading. Shares of ...

Exxon's energy outlook estimates that natural gas can help reduce power generation emissions by up to 60% compared to coal. Shares of Exxon fell 3.7% in early trading. Shares of XTO jumped 15.7%.