Dynamic Coupling and Market Instability

Christopher D. Clack, Elias Court and Dmitrijs Zaparanuks

Papers from arXiv.org

Abstract: We examine dynamic coupling and feedback effects between High Frequency Traders (HFTs) and how they can destabilize markets. We develop a general framework for modelling dynamic interaction based on recurrence relations, and use this to show how unexpected latency and feedback can trigger oscillatory instability between HFT market makers with inventory constraints. Our analysis suggests that the modelled instability is an unintentional emergent behaviour of the market that does not depend on the complexity of HFT strategies - even apparently stable strategies are vulnerable. Feedback instability can lead to substantial movements in market prices such as price spikes and crashes.

Date: 2020-05
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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:2005.13621

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