 Shares of Oasis Petroleum Inc. NYSE:OAS shot up 6.5 during trading on Friday . The stock traded as high as 0.72 and last traded at 0.69, 21,108,846 shares traded hands during mid-day trading. A decline of 35 from the average session volume of 32,518,242 shares. The stock had previously closed at 0.65. Several research firms ... 