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Where is the chokepoint? Mapping supply chain vulnerabilities using firmto-firm transaction data

Author

Listed:
  • Inomata,Satoshi
  • Hisamitsu,Toru
  • Imamura,Fumihiko
  • Kichikawa,Yuichi
  • Sagara,Yoshiyuki

Abstract

This study proposes a novel approach to quantifying supply chain exposure to global risks with a particular focus on firms’ activities. The principal contribution of the study is that the proposed metric is specifically designed to address economic security issues, in which supply chain vulnerability is analyzed with respect to the level of network dependence on critical inputs and/or dominant foreign markets.

Suggested Citation

  • Inomata,Satoshi & Hisamitsu,Toru & Imamura,Fumihiko & Kichikawa,Yuichi & Sagara,Yoshiyuki, 2026. "Where is the chokepoint? Mapping supply chain vulnerabilities using firmto-firm transaction data," IDE Discussion Papers 1004, Institute of Developing Economies, Japan External Trade Organization(JETRO).
    • Handle: RePEc:jet:dpaper:dpaper1004
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    File URL: https://ir.ide.go.jp/record/2001827/files/IDP001004_001.pdf
    File Function: First version, 2026
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    Keywords

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    JEL classification:

    • C55 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Large Data Sets: Modeling and Analysis
    • C67 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Input-Output Models
    • F60 - International Economics - - Economic Impacts of Globalization - - - General

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