Wal-Mart Stores could eventually operate a whole range of formats, ranging from the very small to the very large, across the U.S., according to Bryan Gildenberg, chief knowledge officer, Kantar Retail. In the first of a series of video interviews, Gildenberg discusses urban retailing and the Walmart Express and Neighborhood Market formats. Wal-Mart’s annual shareholder meeting takes place Friday, June 1. SN will provide in-depth analysis in its June 25 issue. SN analyzed Wal-Mart’s impact on the supermarket industry during its first 50 years earlier this year.