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Systemic Risk-Taking: Amplification Effects, Externalities, and Regulatory Responses

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  • Anton Korinek

Abstract

This paper develops a simple macroeconomic model of systemic risk in the form of financial accelerator effects: adverse developments in financial markets and in the real economy mutually reinforce each other and lead to a feedback cycle of falling asset prices, deteriorating balance sheets and tightening financing conditions. We show that decentralized agents choose to expose themselves to financial accelerator effects to a socially inefficient extent and do not take on sufficient insurance against systemic risk even if given access to a complete ex-ante insurance market. We use the framework to shed light on a number of current policy issues: First, we develop a new analytical framework of macro-prudential capital adequacy requirements that take into account systemic risk by employing an externality pricing kernel. Second, we show that agents employ ex-ante risk markets to fully undo any expected government bailout. Finally, we find that constrained market participants face socially insufficient incentives to raise more capital during systemic crises.

Suggested Citation

  • Anton Korinek, 2011. "Systemic Risk-Taking: Amplification Effects, Externalities, and Regulatory Responses," NFI Working Papers 2011-WP-13, Indiana State University, Scott College of Business, Networks Financial Institute.
  • Handle: RePEc:nfi:nfiwps:2011-wp-13
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    References listed on IDEAS

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    More about this item

    Keywords

    financial amplification; systemic risk; systemic externalities; externality pricing kernel; macroprudential regulation; bailout neutrality;

    JEL classification:

    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • G13 - Financial Economics - - General Financial Markets - - - Contingent Pricing; Futures Pricing
    • G18 - Financial Economics - - General Financial Markets - - - Government Policy and Regulation
    • D62 - Microeconomics - - Welfare Economics - - - Externalities
    • H23 - Public Economics - - Taxation, Subsidies, and Revenue - - - Externalities; Redistributive Effects; Environmental Taxes and Subsidies

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