Question of the WeekHow Much Will Major US Warehouse Clubs and Mass Merchandisers Generate in Sales This Year? Coresight Research September 8, 2020 QUESTION OF THE WEEK: How Much Will Major US Warehouse Clubs and Mass Merchandisers Generate in Sales This Year? Coresight Research estimates that total sales by major US warehouse clubs and mass merchandisers will reach $639.7 billion in 2020, up 5.4% year over year. This document was generated for Other research you may be interested in: Three Data Points We’re Watching This Week, Week 32: US Store Tracker ExtraRetail-Tech Landscape: MarTechCanada Store Openings and Closures Tracker 2025: Store Openings Edge Past Closures as Costco, Sephora and Uniqlo ExpandFinancial Confidence Reaches Five-Month High: Weekly US Consumer Sentiment, Week 26, 2025—Infographic