Editorial Director NATIONAL REPORT â The nationâs top wholesale distributors to the convenience store industry saw average sales increase a little more than 2 percent in 2020 despite the economic havoc caused by the coronavirus pandemic. McLane Co. Inc., Core-Mark Holding Co. Inc. and Eby-Brown Co. once again grabbed the top three spots on Convenience Store Newsâ annual ranking of the largest wholesalers to the convenience channel. Based on survey data collected by CSNews, independent data sources and CSNews estimates, the annual CSNews Top Wholesalers Report provides the industryâs only look at the performance of the leading wholesale distributors to the c-store industry. Rankings are based on sales for the last full fiscal year for each company.