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Margin requirements and equilibrium asset prices

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  • Coen-Pirani, Daniele

Abstract

This paper studies the effect of margin requirements on asset prices, trading volume and investors' welfare in a general equilibrium asset pricing model where investors differ in their degree of risk aversion. In the stationary equilibrium of the model binding margin requirements decrease the riskless rate and increase its volatility, as well as stock trading volume. Contrary to previous partial equilibrium results, stock prices are not affected by margin requirements. Small changes in margin requirements produce large effects on the long-run distribution of wealth among investors. From a welfare perspective margin requirements might benefit the constrained less risk averse investors, while they always make more risk averse investors worse-off.
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  • Coen-Pirani, Daniele, 2005. "Margin requirements and equilibrium asset prices," Journal of Monetary Economics, Elsevier, vol. 52(2), pages 449-475, March.
    • Handle: RePEc:eee:moneco:v:52:y:2005:i:2:p:449-475
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    3. Brumm, Johannes & Grill, Michael & Kubler, Felix & Schmedders, Karl, 2015. "Margin regulation and volatility," Journal of Monetary Economics, Elsevier, vol. 75(C), pages 54-68.
    4. Mendoza, Enrique G. & Smith, Katherine A., 2006. "Quantitative implications of a debt-deflation theory of Sudden Stops and asset prices," Journal of International Economics, Elsevier, vol. 70(1), pages 82-114, September.
    5. Chabakauri, Georgy, 2010. "Asset pricing with heterogeneous investors and portfolio constraints," LSE Research Online Documents on Economics 43142, London School of Economics and Political Science, LSE Library.
    6. Johannes Brumm & Michael Grill & Felix Kubler & Karl Schmedders, 2023. "Re-use of collateral: Leverage, volatility, and welfare," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 47, pages 19-46, January.
    7. Adam Ashcraft & Nicolae Gârleanu & Lasse Heje Pedersen, 2011. "Two Monetary Tools: Interest Rates and Haircuts," NBER Chapters, in: NBER Macroeconomics Annual 2010, volume 25, pages 143-180, National Bureau of Economic Research, Inc.
    8. Vincenzo Quadrini, 2011. "Financial frictions in macroeconomic fluctations," Economic Quarterly, Federal Reserve Bank of Richmond, vol. 97(3Q), pages 209-254.
    9. Wen-Chung Guo & Frank Wang & Ho-Mou Wu, 2011. "Financial leverage and market volatility with diverse beliefs," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 47(2), pages 337-364, June.
    10. Gianluca Femminis, 2019. "Risk aversion heterogeneity and the investment–uncertainty relationship," Journal of Economics, Springer, vol. 127(3), pages 223-264, August.
    11. Dejian Tian & Weidong Tian & Jianjun Zhou & Zimu Zhu, 2025. "Optimal Consumption-Investment with Epstein-Zin Utility under Leverage Constraint," Papers 2509.21929, arXiv.org, revised Oct 2025.
    12. Felipe Schwartzman, 2012. "When do credit frictions matter for business cycles?," Economic Quarterly, Federal Reserve Bank of Richmond, vol. 98(3Q), pages 209-230.
    13. Andrea Pinna, 2015. "Price Formation of Pledgeable Securities," BEMPS - Bozen Economics & Management Paper Series BEMPS26, Faculty of Economics and Management at the Free University of Bozen.
    14. Capponi, Agostino & Cheng, Wan-Schwin Allen & Giglio, Stefano & Haynes, Richard, 2022. "The collateral rule: Evidence from the credit default swap market," Journal of Monetary Economics, Elsevier, vol. 126(C), pages 58-86.
    15. Georgy Chabakauri, 2012. "Asset Pricing with Heterogeneous Investors and Portfolio Constraints," 2012 Meeting Papers 636, Society for Economic Dynamics.
    16. Chabakauri, Georgy, 2015. "Asset pricing with heterogeneous preferences, beliefs, and portfolio constraints," Journal of Monetary Economics, Elsevier, vol. 75(C), pages 21-34.
    17. Michael Grill & Karl Schmedders & Felix Kubler & Johannes Brumm, 2012. "Margin Requirements and Asset Prices," 2012 Meeting Papers 533, Society for Economic Dynamics.
    18. Hui Ying Sng & Yang Zhang & Huanhuan Zheng, 2020. "Margin trade, short sales and financial stability," Journal of Economic Interaction and Coordination, Springer;Society for Economic Science with Heterogeneous Interacting Agents, vol. 15(3), pages 673-702, July.
    19. Johannes Brumm & Michael Grill & Felix Kubler & Karl Schmedders, 2015. "Collateral Requirements And Asset Prices," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 56(1), pages 1-25, February.
    20. Buss, Adrian & Dumas, Bernard & Uppal, Raman & Vilkov, Grigory, 2016. "The intended and unintended consequences of financial-market regulations: A general-equilibrium analysis," Journal of Monetary Economics, Elsevier, vol. 81(C), pages 25-43.
    21. Albert J. Menkveld & Emiliano Pagnotta & Marius A. Zoican, 2013. "Central Clearing and Asset Prices," Tinbergen Institute Discussion Papers 13-181/IV/DSF67, Tinbergen Institute.
    22. Fuhmei Wang, 2009. "The effects of foreign borrowing policies on economic growth: success or failure?," Journal of Economic Policy Reform, Taylor and Francis Journals, vol. 12(4), pages 273-284.
    23. Chabakauri, Georgy, 2012. "Asset pricing with heterogeneous investors and portfolio constraints," LSE Research Online Documents on Economics 119046, London School of Economics and Political Science, LSE Library.
    24. Nicolae Gârleanu & Lasse Heje Pedersen, 2011. "Margin-based Asset Pricing and Deviations from the Law of One Price," The Review of Financial Studies, Society for Financial Studies, vol. 24(6), pages 1980-2022.
    25. Enrique G. Mendoza & Katherine A. Smith, 2002. "Margin Calls, Trading Costs, and Asset Prices in Emerging Markets: The Finanical Mechanics of the 'Sudden Stop' Phenomenon," NBER Working Papers 9286, National Bureau of Economic Research, Inc.

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