How much is a brand worth? If the brand in question happens to be Walmart, the answer is an eye-popping $139 billion, according to Interbrand Design Forum’s ranking of the top 50 U.S. retail brands by brand value. The study calculates the financial net worth of retail brands based on three metrics: the brand’s financial performance, the role the brand plays in driving consumer selection, and the ability of the brand to secure the delivery of expected future earnings.