“…Data on supplier firms and major customer firms were obtained from Standard & Poor's Compustat segment customer database, which is updated every year. The database has been widely used in prior research into supplier dependence upon major customers (e.g., Ak and Patatoukas, 2016; Dhaliwal et al, 2016; Gu et al, 2017; Irvine et al, 2016; Kim, 2017; Radhakrishnan et al, 2014). The segment database is one of the most inclusive databases, offering complete information on major customers, including name, type, and revenue.…”