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Re-Use of Collateral: Leverage, Volatility, and Welfare

Author

Listed:
  • Johannes Brumm

    (Karlsruhe Institute of Technology)

  • Michael Grill

    (European Central Bank (ECB))

  • Felix Kubler

    (University of Zurich and Swiss Finance Institute)

  • Karl Schmedders

    (University of Zurich and Swiss Finance Institute)

Abstract

We assess the quantitative implications of the re-use of collateral on financial market leverage, volatility, and welfare within an infinite-horizon asset-pricing model with heterogeneous agents. In our model, the ability of agents to re-use frees up collateral that can be used to back more transactions. Re-use thus contributes to the build-up of leverage and significantly increases volatility in financial markets. When introducing limits on re-use, we find that volatility is strictly decreasing as these limits become tighter, yet the impact on welfare is non-monotone. In the model, allowing for some re-use can improve welfare as it enables agents to share risk more effectively. Allowing reuse beyond intermediate levels, however, can lead to excessive leverage and lower welfare. So the analysis in this paper provides a rationale for limiting, yet not banning, re-use in financial markets.

Suggested Citation

  • Johannes Brumm & Michael Grill & Felix Kubler & Karl Schmedders, 2017. "Re-Use of Collateral: Leverage, Volatility, and Welfare," Swiss Finance Institute Research Paper Series 17-04, Swiss Finance Institute.
    • Handle: RePEc:chf:rpseri:rp1704
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    Cited by:

    1. Victor Le Coz & Michael Benzaquen & Damien Challet, 2024. "A minimal model of money creation under regulatory constraints," Papers 2410.18145, arXiv.org.
    2. Park, Hyejin, 2021. "Collateral reuse, collateral mismatch, and financial crises," The Quarterly Review of Economics and Finance, Elsevier, vol. 79(C), pages 367-380.
    3. Dan Cao & Wenlan Luo & Guangyu Nie, 2023. "Global GDSGE Models," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 51, pages 199-225, December.
    4. Le Coz, Victor & Benzaquen, Michael & Challet, Damien, 2025. "A minimal model of money creation within secured interbank markets," Journal of Economic Behavior & Organization, Elsevier, vol. 237(C).
    5. Maurin, Vincent, 2022. "Asset scarcity and collateral rehypothecation," Journal of Financial Intermediation, Elsevier, vol. 52(C).
    6. Infante, Sebastian & Ordoñez, Guillermo, 2025. "The collateral link between volatility and risk sharing," Journal of Monetary Economics, Elsevier, vol. 149(C).
    7. Issa, George & Jarnecic, Elvis, 2024. "Collateral reuse as a direct funding mechanism in repo markets," Pacific-Basin Finance Journal, Elsevier, vol. 86(C).

    More about this item

    Keywords

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    JEL classification:

    • D53 - Microeconomics - - General Equilibrium and Disequilibrium - - - Financial Markets
    • G01 - Financial Economics - - General - - - Financial Crises
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G18 - Financial Economics - - General Financial Markets - - - Government Policy and Regulation

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