Financial instability contagion

a dynamical systems approach

Giuseppe Castellacci, Youngna Choi

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

We build a multi-agent dynamical system for the global economy to investigate and analyse financial crises. The agents are large aggregates of a subeconomy, and the global economy is a collection of subeconomies. We use well-known theories of dynamical systems to represent a financial crisis as propagation of a negative shock on wealth due the breakage of a financial equilibrium. We first extend the framework of the market instability indicator, an early warning signal defined for a single economy as the spectral radius of the Jacobian matrix of the wealth dynamical system. Then, we formulate a quantitative definition of instability contagion in terms thereof. Finally, we analyse the mechanism of instability contagion for both single and multiple economies. Our contribution is to provide a methodology to quantify and monitor the level of instability in sectors and stages of a structured global economic model and how it may propagate through its components.

Original languageEnglish
Pages (from-to)1243-1255
Number of pages13
JournalQuantitative Finance
Volume14
Issue number7
DOIs
StatePublished - 1 Jan 2014

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Systems approach
Financial instability
Contagion
Dynamical systems
Wealth
Global economy
Financial crisis
Financial equilibrium
Propagation
Methodology
Early warning

Keywords

  • Contagion
  • Market instability indicator
  • Multi-economy model
  • Sovereign credit
  • Systemic risk

Cite this

Castellacci, Giuseppe ; Choi, Youngna. / Financial instability contagion : a dynamical systems approach. In: Quantitative Finance. 2014 ; Vol. 14, No. 7. pp. 1243-1255.
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Financial instability contagion : a dynamical systems approach. / Castellacci, Giuseppe; Choi, Youngna.

In: Quantitative Finance, Vol. 14, No. 7, 01.01.2014, p. 1243-1255.

Research output: Contribution to journalArticleResearchpeer-review

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