Both the scientific community and the popular press have paid much attention to the speed of the Securities Information Processor-the data feed consolidating all trades and quotes across the US stock market. Rather than the speed of the Securities Information Processor (SIP), we focus here on its accuracy. Relying on Trade and Quote data, we provide various measures of SIP latency relative to high-speed data feeds between exchanges, known as direct feeds. We use first differences to highlight not only the divergence between the direct feeds and the SIP, but also the fundamental inaccuracy of the SIP. We find that as many as 60% or more of trades are reported out of sequence for stocks with high trade volume, therefore skewing simple measures, such as returns. While not yet definitive, this analysis supports our preliminary conclusion that the underlying infrastructure of the SIP is currently unable to keep pace with the trading activity in today's stock market.
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Zicklin School of Business, Baruch College, Box H125, New York, NY 10010, One Bernard Baruch WayZicklin School of Business, Baruch College, Box H125, New York, NY 10010, One Bernard Baruch Way
Holowczak R.
Simaan Y.E.
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Graduate School of Business, Fordham University, New York, NY 10023Zicklin School of Business, Baruch College, Box H125, New York, NY 10010, One Bernard Baruch Way
Simaan Y.E.
Wu L.
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Zicklin School of Business, Baruch College, Box B10-225, New York, NY 10010, One Bernard Baruch WayZicklin School of Business, Baruch College, Box H125, New York, NY 10010, One Bernard Baruch Way
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Boise State Univ, Coll Business & Econ, Dept Finance, Micron Business & Econ Bldg, Boise, ID USABoise State Univ, Coll Business & Econ, Dept Finance, Micron Business & Econ Bldg, Boise, ID USA
Baig, Ahmed
Berkowitz, Jason
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St Johns Univ, Peter J Tobin Coll Business, Dept Econ & Finance, Queens, NY USABoise State Univ, Coll Business & Econ, Dept Finance, Micron Business & Econ Bldg, Boise, ID USA
Berkowitz, Jason
DeLisle, Ronald Jared
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Utah State Univ, Jon M Huntsman Sch Business, Dept Econ & Finance, Logan, UT USA
Utah State Univ, Jon M Huntsman Sch Business, Dept Econ & Finance, 3565 Old Main Hill, Logan, UT 84322 USABoise State Univ, Coll Business & Econ, Dept Finance, Micron Business & Econ Bldg, Boise, ID USA
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Arizona State Univ, WP Carey Sch Business, Tempe, AZ 85287 USA
Thunderbird Sch Global Management, Glendale, AZ USAArizona State Univ, WP Carey Sch Business, Tempe, AZ 85287 USA
Kallberg, Jarl G.
Liu, Crocker H.
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Cornell Univ, Sch Hotel Adm, Ithaca, NY 14850 USAArizona State Univ, WP Carey Sch Business, Tempe, AZ 85287 USA
Liu, Crocker H.
Pasquariello, Paolo
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Univ Michigan, Ross Sch Business, Ann Arbor, MI 48109 USAArizona State Univ, WP Carey Sch Business, Tempe, AZ 85287 USA