Petroleo Brasileiro S.A. Petrobras ADR. Replay the stock market charts of PBR day by day, back to 2003. Open long and short positions without spending any money. Petroleo Brasileiro SA Petrobras is an oil and gas company focused on the exploration and production in Brazilian fields. Its segments include Exploration & Production; Refining, Transportation and Marketing; Distribution, Gas and Power and Biofuel.