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The diversity of high-frequency traders

Björn Hagströmer and Lars Nordén

Journal of Financial Markets, 2013, vol. 16, issue 4, 741-770

Abstract: The regulatory debate concerning high-frequency trading (HFT) emphasizes the importance of distinguishing different HFT strategies and their influence on market quality. Using data from NASDAQ-OMX Stockholm, we compare market-making HFTs to opportunistic HFTs. We find that market makers constitute the lion's share of HFT trading volume (63–72%) and limit order traffic (81–86%). Furthermore, market makers have higher order-to-trade ratios and lower latency than opportunistic HFTs. In a natural experiment based on tick size changes, we find that the activity of market-making HFTs mitigates intraday price volatility.

Keywords: High-frequency trading; Market making; Market quality; Volatility (search for similar items in EconPapers)
JEL-codes: G14 G18 (search for similar items in EconPapers)
Date: 2013
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