Speed, Algorithmic Trading, and Market Quality Around Macroeconomic News Announcements
Tinbergen Institute Discussion Paper No. 12-121/III
70 Pages Posted: 14 Nov 2012
Date Written: November 12, 2012
This paper documents that speed is crucially important for high frequency trading strategies based on U.S. macroeconomic news releases. Using order level data of the highly liquid S&P500 ETF traded on NASDAQ from January 6, 2009, to December 12, 2011, we find that a delay of 300 milliseconds (1 second) significantly reduces returns by 3.08% (7.33%) compared to instantaneous execution over all announcements in the sample. This reduction is stronger in case of high impact news and on days with high volatility. In addition, we assess the effect of algorithmic trading on market quality around macroeconomic news. Increases in algorithmic trading activity have a positive (mixed) effect on market quality measures when we use algorithmic trading proxies that capture the top of the order book (full order book).
Keywords: macroeconomic news, high frequency trading, latency costs, market activity, event-based trading
JEL Classification: E44, G10, G14
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