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Degreasing the wheels of finance

Author

Listed:
  • Aleksander Berentsen
  • Samuel Huber
  • Alessandro Marchesiani

Abstract

Can there be too much trading in financial markets? To address this question, we construct a dynamic general equilibrium model, where agents face idiosyncratic preference and technology shocks. A financial market allows agents to adjust their portfolio of liquid and illiquid assets in response to these shocks. The opportunity to do so reduces the demand for the liquid asset and, hence, its value. The optimal policy response is to restrict (but not eliminate) access to the financial market. The reason for this result is that the portfolio choice exhibits a pecuniary externality: An agent does not take into account that by holding more of the liquid asset, he not only acquires additional insurance but also marginally increases the value of the liquid asset which improves insurance for other market participants.

Suggested Citation

  • Aleksander Berentsen & Samuel Huber & Alessandro Marchesiani, 2012. "Degreasing the wheels of finance," ECON - Working Papers 101, Department of Economics - University of Zurich.
    • Handle: RePEc:zur:econwp:101
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    References listed on IDEAS

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    More about this item

    Keywords

    Monetary policy; liquidity; financial markets;

    JEL classification:

    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies
    • E59 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Other

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