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Risk externalities

Author

Listed:
  • Felipe Iachan

    (FGV)

  • Dejanir Silva

    (UIUC)

Abstract

Current analysis of macro-prudential policy has largely focused on excessive leverage and fire sales, while abstracting from firm-level risk and portfolio decisions. We show that these matter for the design of optimal interventions. We study a macroeconomic model in which firms make investment decisions in the presence of both aggregate and firm-specific risk. Financial constraints limit access to external funds and tie each firm's output to its net worth and a firm-specific return on investment. The laissez-faire outcome is constrained inefficient, as individual decisions fail to internalize their consequences on the distribution of risky returns over other agents (a risk externality). Firms are, at the same time, overexposed to aggregate risk and underexposed to idiosyncratic risk. In a quantitative exploration, interventions are shown to be counter-cyclical in their magnitude and to lead to large increases in aggregate TFP and output.

Suggested Citation

  • Felipe Iachan & Dejanir Silva, 2019. "Risk externalities," 2019 Meeting Papers 338, Society for Economic Dynamics.
    • Handle: RePEc:red:sed019:338
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    References listed on IDEAS

    as
    1. N. Bloom, 2016. "Fluctuations in uncertainty," Voprosy Ekonomiki, NP Voprosy Ekonomiki, issue 4.
    2. Oleg Itskhoki & Benjamin Moll, 2019. "Optimal Development Policies With Financial Frictions," Econometrica, Econometric Society, vol. 87(1), pages 139-173, January.
    3. Julian di Giovanni & Andrei A. Levchenko & Isabelle Mejean, 2018. "The Micro Origins of International Business-Cycle Comovement," American Economic Review, American Economic Association, vol. 108(1), pages 82-108, January.
    4. John Y. Campbell & Martin Lettau & Burton G. Malkiel & Yexiao Xu, 2001. "Have Individual Stocks Become More Volatile? An Empirical Exploration of Idiosyncratic Risk," Journal of Finance, American Finance Association, vol. 56(1), pages 1-43, February.
    5. Vasco M. Carvalho & Basile Grassi, 2019. "Large Firm Dynamics and the Business Cycle," American Economic Review, American Economic Association, vol. 109(4), pages 1375-1425, April.
    6. Daron Acemoglu & Vasco M. Carvalho & Asuman Ozdaglar & Alireza Tahbaz‐Salehi, 2012. "The Network Origins of Aggregate Fluctuations," Econometrica, Econometric Society, vol. 80(5), pages 1977-2016, September.
    7. Benjamin Moll, 2014. "Productivity Losses from Financial Frictions: Can Self-Financing Undo Capital Misallocation?," American Economic Review, American Economic Association, vol. 104(10), pages 3186-3221, October.
    8. Vladimir Asriyan, 2014. "Balance sheet recessions with informational and trading frictions," Economics Working Papers 1463, Department of Economics and Business, Universitat Pompeu Fabra, revised Oct 2018.
    9. Nicholas Bloom, 2009. "The Impact of Uncertainty Shocks," Econometrica, Econometric Society, vol. 77(3), pages 623-685, May.
    10. Vasco Carvalho & Xavier Gabaix, 2013. "The Great Diversification and Its Undoing," American Economic Review, American Economic Association, vol. 103(5), pages 1697-1727, August.
    11. John Geanakoplos & Heracles M. Polemarchakis, 1985. "Existence, Regularity, and Constrained Suboptimality of Competitive Allocations When the Asset Market Is Incomplete," Cowles Foundation Discussion Papers 764, Cowles Foundation for Research in Economics, Yale University.
    12. Merton, Robert C., 1971. "Optimum consumption and portfolio rules in a continuous-time model," Journal of Economic Theory, Elsevier, vol. 3(4), pages 373-413, December.
    13. Abhijit V. Banerjee & Benjamin Moll, 2010. "Why Does Misallocation Persist?," American Economic Journal: Macroeconomics, American Economic Association, vol. 2(1), pages 189-206, January.
    14. Stella, Andrea, 2015. "Firm dynamics and the origins of aggregate fluctuations," Journal of Economic Dynamics and Control, Elsevier, vol. 55(C), pages 71-88.
    15. Xavier Gabaix, 2009. "Power Laws in Economics and Finance," Annual Review of Economics, Annual Reviews, vol. 1(1), pages 255-294, May.
    16. Xavier Gabaix, 2016. "Power Laws in Economics: An Introduction," Journal of Economic Perspectives, American Economic Association, vol. 30(1), pages 185-206, Winter.
    17. Xavier Gabaix, 2011. "The Granular Origins of Aggregate Fluctuations," Econometrica, Econometric Society, vol. 79(3), pages 733-772, May.
    18. Guido Lorenzoni, 2008. "Inefficient Credit Booms," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 75(3), pages 809-833.
    19. David Rezza Baqaee, 2018. "Cascading Failures in Production Networks," Econometrica, Econometric Society, vol. 86(5), pages 1819-1838, September.
    20. David Rezza Baqaee & Emmanuel Farhi, 2019. "The Macroeconomic Impact of Microeconomic Shocks: Beyond Hulten's Theorem," Econometrica, Econometric Society, vol. 87(4), pages 1155-1203, July.
    21. Francisco J. Buera & Joseph P. Kaboski & Yongseok Shin, 2011. "Finance and Development: A Tale of Two Sectors," American Economic Review, American Economic Association, vol. 101(5), pages 1964-2002, August.
    22. Julian di Giovanni & Andrei A. Levchenko, 2012. "Country Size, International Trade, and Aggregate Fluctuations in Granular Economies," Journal of Political Economy, University of Chicago Press, vol. 120(6), pages 1083-1132.
    23. Merton, Robert C, 1969. "Lifetime Portfolio Selection under Uncertainty: The Continuous-Time Case," The Review of Economics and Statistics, MIT Press, vol. 51(3), pages 247-257, August.
    24. Bruce C. Greenwald & Joseph E. Stiglitz, 1986. "Externalities in Economies with Imperfect Information and Incomplete Markets," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 101(2), pages 229-264.
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