In this article GPS A general view of an Old Navy store. Gap Inc. Gap's largest banner Old Navy returned to growth for the first time in more than a year during its holiday quarter as the retailer delivered earnings on Thursday that came in well ahead of Wall Street's expectations. Sales at Old Navy grew 6% to $2.29 billion, and Gap's overall gross margin surged 5.3 percentage points to 38.9% thanks to fewer markdowns and lower input costs. Analysts had expected a gross margin of 36%, according to StreetAcc ...