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Macro-Prudential Policy in a Fisherian model of Financial Innovation

  • Javier Bianchi
  • Emine Boz
  • Enrique G. Mendoza

The interaction between credit frictions, financial innovation, and a switch from optimistic to pessimistic beliefs played a central role in the 2008 financial crisis. This paper develops a quantitative general equilibrium framework in which this interaction drives the financial amplification mechanism to study the effects of macro-prudential policy. Financial innovation enhances the ability of agents to collateralize assets into debt, but the riskiness of this new regime can only be learned over time. Beliefs about transition probabilities across states with high and low ability to borrow change as agents learn from observed realizations of financial conditions. At the same time, the collateral constraint introduces a pecuniary externality, because agents fail to internalize the effect of their borrowing decisions on asset prices. Quantitative analysis shows that the effectiveness of macro-prudential policy in this environment depends on the government's information set, the tightness of credit constraints and the pace at which optimism surges in the early stages of financial innovation. The policy is least effective when the government is as uninformed as private agents, credit constraints are tight, and optimism builds quickly.

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 18036.

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Date of creation: May 2012
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Publication status: published as Javier Bianchi & Emine Boz & Enrique Gabriel Mendoza, 2012. "Macroprudential Policy in a Fisherian Model of Financial Innovation," IMF Economic Review, Palgrave Macmillan, vol. 60(2), pages 223-269, July.
Handle: RePEc:nbr:nberwo:18036
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  1. Enrique Mendoza & Emine Boz, 2010. "Financial Innovation, the Discovery of Risk, and the U.S. Credit Crisis," 2010 Meeting Papers 316, Society for Economic Dynamics.
  2. 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.
  3. Bianchi, Javier, 2009. "Overborrowing and Systemic Externalities in the Business Cycle," MPRA Paper 15114, University Library of Munich, Germany.
  4. Gianluca Benigno & Huigang Chen & Christopher Otrok & Alessandro Rebucci & Eric Young, 2011. "Financial Crises and Macro-Prudential Policies," Research Department Publications 4710, Inter-American Development Bank, Research Department.
  5. Marco Terrones & Enrique G. Mendoza, 2008. "An Anatomy of Credit Booms; Evidence From Macro Aggregates and Micro Data," IMF Working Papers 08/226, International Monetary Fund.
  6. Kehoe, Timothy J & Levine, David K, 1993. "Debt-Constrained Asset Markets," Review of Economic Studies, Wiley Blackwell, vol. 60(4), pages 865-88, October.
  7. Davis, Morris A. & Heathcote, Jonathan, 2007. "The price and quantity of residential land in the United States," Journal of Monetary Economics, Elsevier, vol. 54(8), pages 2595-2620, November.
  8. Nicola Gennaioli & Andrei Shleifer & Robert Vishny, 2010. "Neglected Risks, Financial Innovation, and Financial Fragility," Working Papers 502, Barcelona Graduate School of Economics.
  9. Javier Bianchi & Enrique G. Mendoza, 2010. "Overborrowing, Financial Crises and 'Macro-prudential' Taxes," NBER Working Papers 16091, National Bureau of Economic Research, Inc.
  10. Nicola Gennaioli & Andrei Shleifer, 2010. "What Comes to Mind," The Quarterly Journal of Economics, MIT Press, vol. 125(4), pages 1399-1433, November.
  11. Hyman P. Minsky, 1992. "The Financial Instability Hypothesis," Economics Working Paper Archive wp_74, Levy Economics Institute.
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