Financial entanglement: A theory of incomplete integration, leverage, crashes, and contagion

Nicolae Gârleanu, Stavros Panageas, Jianfeng Yu

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


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. Due to a complementarity between participation and leverage decisions, the equilibrium may exhibit diverse leverage and participation choices across investors, although investors are ex ante identical. Small changes in market-access costs can cause a change in the type of equilibrium, leading to discontinuous price changes, deleveraging, and portfolio-flow reversals. Moreover, the market is subject to contagion - an adverse shock to investors in some locations affects prices everywhere.

Original languageEnglish (US)
Pages (from-to)1979-2010
Number of pages32
JournalAmerican Economic Review
Issue number7
StatePublished - Jul 1 2015

Bibliographical note

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© 2015, American Economic Association. All rights reserved.


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