Abstract
Both backward (upstream) and forward (downstream) vertical integration strategies shape the organization of global value chains (GVCs). Yet, many studies make the unrealistic assumption that integration decisions are binary and one-directional. That is, for each production stage, companies make the integration decision only once, and this can be either backward or forward but not in both directions. The aim of this paper is to analyze the firm-level organization of GVCs when both vertical integration decisions are taken into account. Exploiting a global sample of more than 1.4 million firms, we first document how midstream parents, which actually integrate on both directions along the chain, are at least as common as downstream and upstream parents. We then find that parent companies prefer to integrate production stages with a relatively low elasticity of substitution and with a technological proximity on the supply chain. Finally, we provide evidence that more than one subsidiary in a given location can perform the same production stage.
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Notes
MengXiao (2019) finds that, if each industry pair is weighted by its total number of seller-buyer relationships, 62% of the industry pairs feature the coexistence of backward and forward integration.
We follow international standards for the identification of parents and subsidiaries of MNEs (OECD 2005; UNCTAD 2009; UNCTAD 2016), according to which a subsidiary is controlled after a (direct or indirect) concentration of voting rights (> 50%). See also Rungi et al. (2019). Similar data structures have been used in Alviarez et al. (2016), Cravino and Levchenko (2016), and Rungi and Del Prete (2018).
We adopt official correspondence tables from NAICS to 2002 I-O industry codes (IO2002) provided by US Bureau of Ecnomic Analysis.
A key difference with these previous studies is, however, that we also consider output industries. Please note how we make use of primary activities although parents can report several secondary activities different from the primary. In this case, we check that headquarters’ secondary activities can be found as primary activities of the subsidiaries in 99.2% of cases.
The duplication of tasks also exists when we check for’pure’ vertical integration strategies—excluding horizontal integration decisions—for affiliates that report the same downstreamness of the parent. In this case we find that 24% of affiliates perform tasks that are already integrated within the corporate boundary.
In Table 8 in “Appendix”, we show that our results are robust to the implementation of a probit model.
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Del Prete, D., Rungi, A. Backward and Forward Integration Along Global Value Chains. Rev Ind Organ 57, 263–283 (2020). https://doi.org/10.1007/s11151-020-09774-y
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DOI: https://doi.org/10.1007/s11151-020-09774-y
Keywords
- Global value chains
- Vertical integration
- Property rights theory
- Multinational enterprises
- Downstreamness
- Corporate boundaries