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Scope and limits of bank liquidity creation

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  • Dietrich, Diemo
  • Gehrig, Thomas

Abstract

In standard banking models a demand for liquidity arises because investors want to take precautions against sudden consumption needs. It has long been taken for granted that banks’ maturity transformation is because they insure against such risk, exposing them to crises and justifying bank regulation. We show that if a demand for liquidity arises additionally for another important reason, their co-existence substantially alters equilibrium outcomes. Specifically, we introduce investors who want to preserve flexibility in case better investment opportunities arrive later. We show that (1) there is no maturity transformation if the funding liquidity of new investment opportunities is not sufficiently limited, (2) equilibria in models that consider only a single reason for liquidity demand are not necessarily robust, (3) an equilibrium in pure strategies in the depositing game may not exist at all.

Suggested Citation

  • Dietrich, Diemo & Gehrig, Thomas, 2025. "Scope and limits of bank liquidity creation," Journal of Financial Intermediation, Elsevier, vol. 61(C).
    • Handle: RePEc:eee:jfinin:v:61:y:2025:i:c:s1042957324000512
    DOI: 10.1016/j.jfi.2024.101123
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    More about this item

    Keywords

    Investment opportunities; Consumption needs; Liquidity demand; Competitive insurance markets;
    All these keywords.

    JEL classification:

    • D11 - Microeconomics - - Household Behavior - - - Consumer Economics: Theory
    • D86 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Economics of Contract Law
    • E21 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Consumption; Saving; Wealth
    • E22 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Investment; Capital; Intangible Capital; Capacity
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • L22 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Firm Organization and Market Structure

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