Petróleo Brasileiro S.A. – Petrobras (NYSE:PBR – Get Free Report) and Nostrum Oil & Gas (OTCMKTS:NSTRY – Get Free Report) are both oils/energy companies, but which is the superior business? We will compare the two businesses based on the strength of their profitability, valuation, risk, institutional ownership, earnings, analyst recommendations and dividends. Earnings and Valuation […]