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Human vs. high-frequency traders, penny jumping, and tick size

Soheil Mahmoodzadeh and Ramazan Gençay

Journal of Banking & Finance, 2017, vol. 85, issue C, 69-82

Abstract: This paper examines changes in market quality resulting from the smaller tick size of the interbank foreign exchange market. Coupled with the lower tick size, the special composition of traders and their order placement strategies created a suitable environment for high-frequency traders (HFT’s) to implement sub-penny jumping strategy to front-run human traders. We show that the spread declined following the introduction of decimal pip pricing. However, benefits of spread reduction were mostly absorbed by the HFT’s. Market depths were also significantly reduced with the occupation of the top of the order book by HFT’s. This new environment changed the market maker-market taker composition between different traders and altered price impacts of the order flows.

Keywords: Interbank foreign exchange market; Tick size; Market quality (search for similar items in EconPapers)
JEL-codes: F31 G14 G15 (search for similar items in EconPapers)
Date: 2017
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