This chart uses 2010 to 2014 U.S. athletic footwear market data from Sporting Goods Intelligence. (fortune.com)
Nike's share of the U.S. sport footwear market slipped to 53.3 percent in the first six months of 2016 from 55 percent a year ago, while Adidas's rose to 6.3 percent from 4.2 percent, according to market research firm NPD. (fortune.com)
The second is Nike's current share of the basketball footwear market. (fortune.com)