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Financial Entanglement: A Theory of Incomplete Integration, Leverage, Crashes, and Contagion

  • Nicolae Gârleanu
  • Stavros Panageas
  • Jianfeng Yu

We propose a unified model of limited market integration, asset-price determination, leveraging, and contagion. Investors and firms are located on a circle, and access to markets involves participation costs that increase with distance. Despite the ex-ante symmetry of investors, their strategies may (endogenously) exhibit diversity, with some investors in each location following high-leverage, high-participation, and high-cost strategies and some unleveraged, low-participation, and low-cost strategies. The capital allocated to high-leverage strategies may be vulnerable even to small changes in market-access costs, which can lead to discontinuous price drops, de-leveraging, and portfolio-flow reversals. Moreover, the market is subject to contagion, in that an adverse shock to investors at a subset of locations affects prices everywhere.

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 19381.

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Date of creation: Aug 2013
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Handle: RePEc:nbr:nberwo:19381
Note: AP EFG IFM
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