United we stand: The impact of buying groups on retailer productivity

Inge Geyskens, Katrijn Gielens, Stefan Wuyts

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


In diverse industries, from grocery retailing to health care, retailers join buying groups to achieve better terms with suppliers. The authors track the buying group membership of Europe's largest grocery retailers over a 15-year period and evaluate why some buying groups are better than others in increasing retailer performance and why different members belonging to the same group do not always benefit equally from their membership. They find that, on average, buying groups indeed generate scale advantages for their members: group scale increases group members' productivity and sales and decreases their cost of goods sold. Still, bigger is not always better. Retailers benefit less from buying group scale when the group is more heterogeneous in terms of member size and when it extends its scope across too many markets. Moreover, the smaller a member is within the group and the more it overlaps with fellow members, the less it benefits.

Original languageEnglish (US)
Pages (from-to)16-33
Number of pages18
JournalJournal of Marketing
Issue number4
StatePublished - Jul 1 2015

All Science Journal Classification (ASJC) codes

  • Business and International Management
  • Marketing


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