• Applied Optoelectronics average gross margin for 2012-09-30 was 0%, a 0% decline from 2012-12-31.
• Applied Optoelectronics average gross margin for 2012-12-31 was 0%, a 0% decline from 2013-03-31.
• Applied Optoelectronics average gross margin for 2013-03-31 was 0%, a 0% decline from 2013-06-30.

Gross margin can be defined as a company's total sales revenue minus its cost of goods sold, divided by the total sales revenue, expressed as a percentage.