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Supply Network Formation and Fragility

Author

Listed:
  • Matthew Elliott

    (CAM - University of Cambridge [UK])

  • Benjamin Golub

    (Northwestern University [Evanston])

  • Matthew V Leduc

    (PSE - Paris School of Economics - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - ENPC - École des Ponts ParisTech - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement, PJSE - Paris Jourdan Sciences Economiques - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - ENPC - École des Ponts ParisTech - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

Abstract

We model the production of complex goods in a large supply network. Each firm sources several essential inputs through relationships with other firms. Individual supply relationships are at risk of idiosyncratic failure, which threatens to disrupt production. To protect against this, firms multisource inputs and strategically invest to make relationships stronger, trading off the cost of investment against the benefits of increased robustness. A supply network is called fragile if aggregate output is very sensitive to small aggregate shocks. We show that supply networks of intermediate productivity are fragile in equilibrium, even though this is always inefficient. The endogenous configuration of supply networks provides a new channel for the powerful amplification of shocks.

Suggested Citation

  • Matthew Elliott & Benjamin Golub & Matthew V Leduc, 2022. "Supply Network Formation and Fragility," PSE-Ecole d'économie de Paris (Postprint) halshs-03758414, HAL.
    • Handle: RePEc:hal:pseptp:halshs-03758414
    DOI: 10.1257/aer.20210220
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    4. Raphael Lafrogne-Joussier & Julien Martin & Isabelle Mejean, 2023. "Supply Shocks in Supply Chains: Evidence from the Early Lockdown in China," IMF Economic Review, Palgrave Macmillan;International Monetary Fund, vol. 71(1), pages 170-215, March.
    5. Antonio De Vito & Martin Jacob & Dirk Schindler & Guosong Xu, 2023. "How Do Corporate Tax Hikes Affect Investment Allocation within Multinationals?," CESifo Working Paper Series 10272, CESifo.
    6. Chen, Jun & Elliott, Matthew & Koh, Andrew, 2023. "Capability accumulation and conglomeratization in the information age," Journal of Economic Theory, Elsevier, vol. 210(C).
    7. Crosignani, Matteo & Macchiavelli, Marco & Silva, André F., 2023. "Pirates without borders: The propagation of cyberattacks through firms’ supply chains," Journal of Financial Economics, Elsevier, vol. 147(2), pages 432-448.
    8. Antoine Mandel & Van-Quy Nguyen & Bach Dong-Xuan, 2024. "Strategic formation of production networks," Papers 2401.08929, arXiv.org.
    9. Jan Weber, Jan Schulz, 2022. "Growing Differently: A Structural Classification for European NUTS-3 Regions," Working Paper Series, Department of Economics, University of Utah 2022_01, University of Utah, Department of Economics.
    10. Cajal-Grossi, Julia & Del Prete, Davide & Macchiavello, Rocco, 2023. "Supply chain disruptions and sourcing strategies," International Journal of Industrial Organization, Elsevier, vol. 90(C).
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    JEL classification:

    • D21 - Microeconomics - - Production and Organizations - - - Firm Behavior: Theory
    • G31 - Financial Economics - - Corporate Finance and Governance - - - Capital Budgeting; Fixed Investment and Inventory Studies
    • L14 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Transactional Relationships; Contracts and Reputation

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