• Costco average return on equity for 2011-08-31 was 0, a 0% decline from 2011-11-30.
• Costco average return on equity for 2011-11-30 was 0, a 0% decline from 2012-02-29.
• Costco average return on equity for 2012-02-29 was 0, a 0% decline from 2012-05-31.

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.