Intermediaries’ Substitutability and Financial Network Resilience: A Hyperstructure Approach

Olivier Accominotti, Delio Lucena and Stefano Ugolini

No 17511, CEPR Discussion Papers from Centre for Economic Policy Research

Abstract: We propose a new methodology to assess intermediaries’ substitutability in financial networks featuring higher-order structures (credit intermediation chains). We represent the financial network as a hyperstructure and each credit intermediation chain as a hyperedge. This approach allows us to assess how the failure of intermediaries affects network connectivity. We apply this methodology to a unique dataset documenting the structure of the international, sterling money market at the heyday of the first globalization era (1880-1913). Our results reveal that the failure of individual money market actors could only cause limited damage to the network as intermediaries were highly substitutable. These findings suggest that an international financial network without highly systemic nodes can emerge even at a time of global economic integration.

Keywords: Financial networks; Systemic risk; Hypergraphs; Intermediation chains; Bills of exchange; Hyperstructures (search for similar items in EconPapers)
JEL-codes: D85 E42 F30 G20 N20 (search for similar items in EconPapers)
Date: 2022-07
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