 Oasis Petroleum Inc. NYSE:OASs stock price gapped up prior to trading on Wednesday . The stock had previously closed at 0.70, but opened at 0.75. Oasis Petroleum shares last traded at 0.77, with a volume of 45,448,196 shares trading hands. Several research firms have issued reports on OAS. Siebert Williams Shank lowered Oasis Petroleum from ... 