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Does an Electronic Stock Exchange Need an Upstairs Market?

44 Pages Posted: 14 Jan 2002  

Kumar Venkataraman

Southern Methodist University (SMU) - Edwin L. Cox School of Business

Hendrik Bessembinder

Arizona State University

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Abstract

We examine the Paris Bourse, whose electronic limit order market closely resembles the downstairs markets envisioned by theorists, to test several theoretical predictions regarding upstairs trading. We present direct evidence in support of the Grossman (1992) prediction that upstairs brokers lower execution costs by tapping into unexpressed liquidity, as actual execution costs upstairs are on average only 20% (35%) as large as they would be if block trades were executed against displayed (displayed and hidden) liquidity in the downstairs limit order book. Consistent with prior analyses, the Paris data also support the Seppi (1990) hypothesis that upstairs brokers certify trades as uninformed. We also find that participants in stocks with less restrictive crossing rules agree to outside-the-quote executions for more difficult trades and at times when downstairs liquidity is lacking. These likely represent trades that could not have been otherwise completed, suggesting that market quality can be enhanced by allowing participants more flexibility to execute blocks at prices outside the quotes.

Keywords: Upstairs market, Limit order book, Electronic exchange, Crossing rules

JEL Classification: G14, G15

Suggested Citation

Venkataraman, Kumar and Bessembinder, Hendrik, Does an Electronic Stock Exchange Need an Upstairs Market?. Available at SSRN: https://ssrn.com/abstract=296271 or http://dx.doi.org/10.2139/ssrn.296271

Kumar Venkataraman (Contact Author)

Southern Methodist University (SMU) - Edwin L. Cox School of Business ( email )

P.O. Box 750333
Dallas, TX 75275-0333
United States
214-768-7005 (Phone)
214-768-4099 (Fax)

HOME PAGE: http://people.smu.edu/kumar/

Hendrik (Hank) Bessembinder

Arizona State University ( email )

PO Box 873906
Tempe, AZ 85207
United States

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