• Dell average operating margin for 2015-01-31 was 0%, a 0% decline from 2015-04-30.
• Dell average operating margin for 2015-04-30 was 0%, a 0% decline from 2015-07-31.
• Dell average operating margin for 2015-07-31 was 0%, a 0% decline from 2015-10-31.

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.