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Margin-Based Asset Pricing and Deviations from the Law of One Price

  • Nicolae Gârleanu
  • Lasse Heje Pedersen

In a model with heterogeneous-risk-aversion agents facing margin constraints, we show how securities' required returns are characterized both by their betas and their margin requirements. Negative shocks to fundamentals make margin constraints bind, lowering risk-free rates and raising Sharpe ratios of risky securities, especially for high-margin securities. Such a funding-liquidity crisis gives rise to "bases," that is, price gaps between securities with identical cash-flows but different margins. In the time series, bases depend on the shadow cost of capital, which can be captured through the interest-rate spread between collateralized and uncollateralized loans, and, in the cross section, they depend on relative margins. We test the model empirically using the CDS-bond bases and other deviations from the Law of One Price, and use it to evaluate central banks' lending facilities.

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File URL: http://www.nber.org/papers/w16777.pdf
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 16777.

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Date of creation: Feb 2011
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Publication status: published as Nicolae G�rleanu & Lasse Heje Pedersen, 2011. "Margin-based Asset Pricing and Deviations from the Law of One Price," Review of Financial Studies, Society for Financial Studies, vol. 24(6), pages 1980-2022.
Handle: RePEc:nbr:nberwo:16777
Note: AP EFG ME
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  1. Daniele Coen-Pirani, 2000. "Margin Requirements and Equilibrium Asset Prices," GSIA Working Papers 2001-E5, Carnegie Mellon University, Tepper School of Business.
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