Why are Banks’ Holdings of Liquid Assets So High?
Working Paper 30340
DOI 10.3386/w30340
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Banks hold large amounts of liquid assets compared to non-financial firms and to before the global financial crisis (GFC). The transaction and precautionary motives for holding liquid assets cannot explain the size and evolution of bank liquid asset holdings. We introduce a portfolio motive that leads banks to invest in liquid assets when they have exhausted their ability to make profitable loans. With this motive, loans and liquid assets are substitutes. Post-GFC capital requirement increases lowered the profitability of loans relative to liquid assets and help explain why liquid asset holdings are larger and more so for large banks.