“…The final sample consists of 118 Walmart suppliers, of which 115 had complete information on all covariates. The size of our sample is similar to that of other event studies on buyer-supplier relationships (e.g., Kalaignanam et al 2013;Liu et al 2014) and customer power (e.g., Boyd, Chandy, and Cunha 2010;Deitz, Hansen, and Richey 2009). The suppliers in our sample are active in grocery categories, such as cereals (e.g., General Mills, Kellogg's) and meat products (e.g., Bob Evans, Tyson Foods), as well as nongrocery categories, such as apparel (e.g., Hanesbrands, VF Corporation), electronics (e.g., Emerson Radio Corporation, Koss), and entertainment (e.g., Activision Blizzard, Electronic Arts).…”