REUTERSThe sign of a Chevron gas station is pictured in Encinitas, California July 28, 2011. Chevron, the second largest U.S.-based oil and gas producer, will report second quarter earnings on Friday. REUTERS/Mike Blake (UNITED STATES - Tags: BUSINESS ENE
dapdWarren Buffett, chairman and CEO, Berkshire Hathaway, Inc., speaks during the Economic Club of Washingtons 25th anniversary celebration dinner in Washington, Tuesday, June 5, 2012. (Foto:Cliff Owen/AP/dapd)
REUTERSThe Apple Inc corporate logo is pictured on the rear side of the companys Macbook Air notebook computer in Virginia, August 10, 2011. Apple Inc finished ahead of Exxon Mobil Corp as the largest U.S. company by market capitalization for the first ti
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