Company said it plans to buy back up to $15 billion in shares over the next three years. The San Ramon, Calif., energy giant said the program may be discontinued at any time. Chevron has a market capitalization of $201.1 billion. http://www.marketwatch.com/news/sto...x?guid={FAD75B54-8124-4E8A-9FB8-C057CA545109} Is this going to support the stock price ?