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Agglomeration, related variety and vertical integration

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  • Giulio Cainelli
  • Donato Iacobucci

Abstract

Several recent studies investigate the relation between geographic concentration of production and vertical integration, based on the hypothesis that spatial agglomeration of firms in the same industry facilitates input procurement thereby reducing the degree of vertical integration. The present paper contributes to this debate by also considering the effects of industry variety at the local level. Specifically, we consider two forms of variety: unrelated variety and vertically related variety. The latter index is constructed using information drawn from input-output tables and captures the opportunities for outsourcing within the local system. We consider inter-industry vertical integration by taking account of the ownership of activities with input-output linkages. Using a dataset of 24,663 Italian business groups in 2001, we estimate Tobit models to investigate the influence of vertically related variety and other agglomeration forces on the degree of vertical integration of groups. Our evidence confirms that vertical integration is influenced by industry specialization at the local level. We also find that the higher the vertically related variety, the lower the need for firms to integrate activities since they have more opportunities to acquire intermediate goods and services within the local system.

Suggested Citation

  • Giulio Cainelli & Donato Iacobucci, 2011. "Agglomeration, related variety and vertical integration," Openloc Working Papers 1104, Public policies and local development.
  • Handle: RePEc:trn:utwpol:1104
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    More about this item

    Keywords

    vertical integration; agglomeration; related-variety; business group;
    All these keywords.

    JEL classification:

    • L2 - Industrial Organization - - Firm Objectives, Organization, and Behavior
    • M2 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Business Economics

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