Diversification and Systemic Risk: A Financial Network Perspective

Rüdiger Frey, Juraj Hledik

Publication: Scientific journalJournal articlepeer-review

Abstract

In this paper, we study the implications of diversification in the asset portfolios of banks for financial stability and systemic risk. Adding to the existing literature, we analyse this issue in a network model of the interbank market. We carry out a simulation study that determines the probability of a systemic crisis in the banking network as a function of both the level of diversification, and the connectivity and structure of the financial network. In contrast to earlier studies we find that diversification at the level of individual banks may be beneficial for financial stability even if it does lead to a higher asset return correlation across banks.

Keywords: systemic risk; financial network; diversification
JEL Classification: G21; G28
Original languageEnglish
Pages (from-to)54
JournalRisks
Volume6
Issue number2
DOIs
Publication statusPublished - 2018

Austrian Classification of Fields of Science and Technology (ÖFOS)

  • 502009 Corporate finance
  • 101024 Probability theory
  • 101007 Financial mathematics

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