The list of Fortune 500 companies with 40% or more board seats held by women and minorities and the list of Fortune 500 companies with zero board seats held by women and minorities compiled by The Alliance for Board Diversity (ABD). ABD utilizes a Census methodology. The ABD Census counts Fortune 500 board directors to provide an accurate measurement of the representation and progress of women and minorities in business leadership and to allow for comparable statistics from year to year. ABD Census analyses are based on companies on the Fortune 500 list published in 2012. ABD examined Fortune 500 companies because they are recognized and serve as the most influential businesses in the United States, ranked by revenue each year.