• Petroleo Brasileiro S.A.- Petrobras average return on equity for 2011-09-30 was 0, a 0% decline from 2011-12-31.
• Petroleo Brasileiro S.A.- Petrobras average return on equity for 2011-12-31 was 0, a 0% decline from 2012-03-31.
• Petroleo Brasileiro S.A.- Petrobras average return on equity for 2012-03-31 was 0, a 0% decline from 2012-06-30.

Roe - return on equity can be defined as the amount of net income returned as a percentage of shareholders equity. Return on equity measures a corporation's profitability by revealing how much profit a company generates with the money shareholders have invested.