Endogenous market making and network formation

Briana Chang and Shengxing Zhang

LSE Research Online Documents on Economics from London School of Economics and Political Science, LSE Library

Abstract: This paper proposes a theory of intermediation in which intermediaries emerge endogenously as the choice of agents. In contrast to the previous trading models based on random matching or exogenous networks, we allow traders to explicitly choose their trading partners as well as the number of trading links in a dynamic framework. We show that traders with higher trading needs optimally choose to match with traders with lower needs for trade and they build fewer links in equilibrium. As a result, traders with the least trading need turn out to be the most connected and have the highest gross trade volume. The model therefore endogenously generates a core-periphery trading network that we often observe: a financial architecture that involves a small number of large, interconnected institutions. We use this framework to study bid-ask spreads, trading volume, asset allocation and implications on systemic risk.

Keywords: Over-the-Counter Market; Trading Network; Matching; Intermediation (search for similar items in EconPapers)
JEL-codes: C70 G1 G20 (search for similar items in EconPapers)
Pages: 48 pages
Date: 2015-11-23
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (25)

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http://eprints.lse.ac.uk/86275/ Open access version. (application/pdf)

Related works:
Working Paper: Endogenous Market Making and Network Formation (2015)
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Persistent link: https://EconPapers.repec.org/RePEc:ehl:lserod:86275

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