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Bubbles, banks and financial stability

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  • Aoki, Kosuke
  • Nikolov, Kalin

Abstract

The macroeconomic impact of rational bubbles in a limited commitment economy crucially depends on whether banks or ordinary savers hold the bubble. Banks hold the bubble asset when their leverage is high, when long-term real interest rates are low or when lax supervision allows them to enjoy high deposit insurance subsidies. When banks are the bubble-holders, this amplifies the output boom by reducing loan–deposit rate spreads while the bubble survives but also deepens the recession when the bubble bursts. In contrast, the real impact of bubbles held by ordinary savers is more muted.

Suggested Citation

  • Aoki, Kosuke & Nikolov, Kalin, 2015. "Bubbles, banks and financial stability," Journal of Monetary Economics, Elsevier, vol. 74(C), pages 33-51.
    • Handle: RePEc:eee:moneco:v:74:y:2015:i:c:p:33-51
    DOI: 10.1016/j.jmoneco.2015.05.002
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    More about this item

    Keywords

    Rational bubbles; Banks; Credit frictions;
    All these keywords.

    JEL classification:

    • E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy

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