• JD average operating margin for 2013-06-30 was 0%, a 0% decline from 2013-09-30.
• JD average operating margin for 2013-09-30 was 0%, a 0% decline from 2013-12-31.
• JD average operating margin for 2013-12-31 was 0%, a 0% decline from 2014-03-31.

Operating margin can be defined as operating margin measurement of what proportion of a company's revenue is left over after paying for variable costs of production such as wages, raw materials, etc.