Rosetta Resources Inc. became an independent company on July 7, 2005 when it was spun-out from Calpine Corporation, a major power producer, and assumed ownership and operations of substantially all of its domestic oil and natural gas operations. Our original legacy assets were concentrated in the Sacramento Basin of California, the Lobo and Perdido Trends in South Texas, the Gulf of Mexico and the Rocky Mountains. On February 13, 2006, Rosetta began trading on the NASDAQ stock exchange under the symbol ROSE.
Under a new leadership team put in place in late 2007 and 2008, we began a significant strategy shift to become an unconventional resources player. During 2009, Rosetta accumulated a major leasehold position and began testing an emerging Eagle Ford shale play in South Texas. During this period, we streamlined and focused our organization with the sale of the majority of our legacy assets.
Today, we hold a major producing position in the liquids-rich region of the Eagle Ford shale where the economics are proving to be some of the strongest among U.S. onshore basins and in the industry today.