Get 'More Cowbell' With This Oil Play By: Benzinga via Benzinga August 17, 2015 at 14:34 PM EDT BMO Capital Markets upgraded Oasis Petroleum Inc. (NYSE: OAS) to Outperform from Market Perform, noting that the company's 2016 ... Read More >> Related Stocks: Carrizo Oil & Gas Matador Resources Company Oasis Petroleum Inc