• Fox average operating margin for 2017-12-31 was 0%, a 0% decline from 2018-03-31.
• Fox average operating margin for 2018-03-31 was 0%, a 0% decline from 2018-06-30.
• Fox average operating margin for 2018-06-30 was 0%, a 0% decline from 2018-09-30.

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.