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濒临倒闭银行中的存款流入与流出:存款保险的作用

Deposit Inflows and Outflows in Failing Banks: The Role of Deposit Insurance
The Journal of Finance · 2026 · CHRISTOPHER MARTIN、Manju Puri、ALEXANDER UFIER

中文摘要

利用独特的日度账户层面数据,我们研究了一家陷入困境银行的存款流出与流入。我们观察到,在负面的监管消息之后,未保险存款人出现流出。常规存款保险和临时存款保险均能减少存款流出。我们提供了重要的新证据,表明与存款流出同时发生的存款流入同样具有一阶重要性。在该银行濒临倒闭之际,未保险存款的流出在很大程度上被新增的已保险存款流入所抵消,同时银行提高了定期存款利率。这一现象在一个面临监管行动的银行大样本中同样成立,这表明已保险存款流入是削弱存款人约束的一个重要机制。

Abstract

ABSTRACT Using unique, daily, account‐level data, we investigate deposit outflows and inflows in a distressed bank. We observe an outflow of uninsured depositors following bad regulatory news. Both regular and temporary deposit insurance reduce outflows. We provide important new evidence that, simultaneous with deposit outflows, deposit inflows are first order. Uninsured deposit outflows were largely offset with new insured deposit inflows as the bank approached failure, with the bank increasing term deposit rates. This phenomenon holds in a large sample of banks that faced regulatory action, suggesting that insured deposit inflows are an important mechanism that weakens depositor discipline.
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