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Supplier Diversification Under Buyer Risk

Author

Listed:
  • Jiri Chod

    (Carroll School of Management, Boston College, Chestnut Hill, Massachusetts 02467)

  • Nikolaos Trichakis

    (MIT Sloan School of Management, Cambridge, Massachusetts 02139-4307)

  • Gerry Tsoukalas

    (Wharton School, University of Pennsylvania, Philadelphia 19104)

Abstract

When should a firm diversify its supply base? Most extant theories attribute supplier diversification to supplier risk. Herein, we develop a new theory that attributes supplier diversification to buyer risk. When suppliers are subject to the risk of buyer default, buyers may take costly action to signal creditworthiness so as to obtain more favorable terms. But once signaling costs are sunk, buyers sourcing from a single supplier become vulnerable to future holdup. Although ex ante supply base diversification can be effective at alleviating the holdup problem, we show that it comes at the expense of higher up-front signaling costs. We resolve the ensuing trade-off and show that diversification emerges as the preferred strategy in equilibrium. Our theory can help explain sourcing strategies when risk in a trade relationship originates from the sourcing firm, for example, a small-to-medium enterprise or a start-up; a setting that has eluded existing theories so far.

Suggested Citation

  • Jiri Chod & Nikolaos Trichakis & Gerry Tsoukalas, 2019. "Supplier Diversification Under Buyer Risk," Management Science, INFORMS, vol. 65(7), pages 3150-3173, July.
  • Handle: RePEc:inm:ormnsc:v:65:y:2019:i:7:p:3150-3173
    DOI: 10.1287/mnsc.2018.3095
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