"Part of the appeal is convenience, which makes a big network of stores important," says Hunter Harris, Vice President of Boston Retail Partners. "Dollar stores also tend to drive growth with new locations, not big growth in sales at existing stores." Below is a list of the 10 retailers that acquired the most new square footage as of the second quarter of 2016, according to CoStar: 1. Wal-Mart (Super Centers and Neighborhood Markets), 15,020,000 square feet 2. Dollar General, 6,529,566 square feet 3. Forever 21, 5,700,000 square feet 4. Family Dollar, 4,272,893 square feet 5. Dollar Tree, 3,210,000 square feet 6. Marshalls, 3,007,000 square feet 7. T.J. Maxx, 2,873,989 square feet 8. Dick's Sporting Goods, 2,650,000 square feet 9. Tractor Supply Co., 1,860,000 square feet 10. Ulta Beauty, 1,170,000 square feet