The 2015 Global Powers list includes privately-held U.S. retail companies as well as U.S. government-run military retail organizations, which will make it significantly different from the 2015 Fortune 500 list. Also, the 2015 Global Powers of Retailing report is based on 2013 revenue figures, so it lags behind and is a little less relevant to those interested in the U.S. retail industry than the annual Retail Fortune 500 rankings.