Nike (NYSE:NKE) and Under Armour (NYSE:UA) enjoyed strong athletic footwear sales gains last week as back-to-school buying moved into high gear and their products scored big with consumers. In the week that ended Aug. 22, total athletic footwear sales jumped 9.5% vs. a year earlier, according to a report by Deutsche Bank analyst Dave Weiner, citing data from market researcher SportScanInfo. Under Armour, which has a 92 IBD Composite Rating out of a possible 99, saw robust gains for the... More