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Collateral Reuse and Financial Stability

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Abstract

The isolated effects of collateral reuse on financial stability are ambiguous and understudied. While greater collateral reuse can guarantee more payments with fewer assets, it can also increase the exposure to potential drops in collateral price. To analyze these tradeoffs, we develop a financial network model with endogenous asset pricing, multiple equilibria, and equilibrium selection. We find that more collateral reuse decreases the likelihood of the worst equilibrium (crisis), with varying effects depending on the network structure. Therefore, collateral reuse can unambiguously improve financial stability for a fixed degree of risk-taking behavior. However, with endogenous risk-taking, we show that a higher degree of collateral reuse can worsen financial stability through greater risk-taking. As a result, while crises may occur less frequently, their severity would increase, leading to a lower social surplus during crises.

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  • Jin-Wook Chang & Grace Chuan, 2025. "Collateral Reuse and Financial Stability," Finance and Economics Discussion Series 2025-035, Board of Governors of the Federal Reserve System (U.S.).
    • Handle: RePEc:fip:fedgfe:2025-35
    DOI: 10.17016/FEDS.2025.035
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    References listed on IDEAS

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    1. Piero Gottardi & Vincent Maurin & Cyril Monnet, 2019. "A theory of repurchase agreements, collateral re-use, and repo intermediation," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 33, pages 30-56, July.
    2. Matthew O Jackson & Agathe Pernoud, 2024. "Credit Freezes, Equilibrium Multiplicity, and Optimal Bailouts in Financial Networks," The Review of Financial Studies, Society for Financial Studies, vol. 37(7), pages 2017-2062.
    3. Piero Gottardi & Vincent Maurin & Cyril Monnet, 2019. "A theory of repurchase agreements, collateral re-use, and repo intermediation," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 33, pages 30-56, July.
    4. Maurin, Vincent, 2022. "Asset scarcity and collateral rehypothecation," Journal of Financial Intermediation, Elsevier, vol. 52(C).
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    JEL classification:

    • D49 - Microeconomics - - Market Structure, Pricing, and Design - - - Other
    • D53 - Microeconomics - - General Equilibrium and Disequilibrium - - - Financial Markets
    • G01 - Financial Economics - - General - - - Financial Crises
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G33 - Financial Economics - - Corporate Finance and Governance - - - Bankruptcy; Liquidation

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