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http://ssrn.com/abstract=311780
 
 

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How to Open and Close the Market: Lessons from the London Stock Exchange


Andrew Ellul


Indiana University - Kelley School of Business - Department of Finance

Hyun Song Shin


Princeton University - Department of Economics

Ian Tonks


University of Bath School of Management

November 21, 2003

EFA 2002 Berlin Meetings Presented Paper

Abstract:     
Various markets, particularly NASDAQ, have been under pressure from regulators and market participants to introduce call auctions for their opening and closing periods. We investigate the performance of call markets at the open and close from a unique natural experiment provided by the institutional structure of the London Stock Exchange. As well as a call auction, there is a parallel "off-exchange" dealership system at both the market's open and close. Although the call market dominates the dealership system in terms of price discovery, we find that the call suffers from a high failure rate to open and close trading, especially on days characterized by difficult trading conditions. In particular, the call's success decreases significantly when (a) asymmetric information is high, (b) trading is expected to be slow, (c) order flow is unbalanced, and (d) uncertainty is high. Furthermore, traders' resort to call auctions is negatively correlated with firm size, implying that the call auction is not the optimal method for opening and closing trading of medium and small sized stocks. We suggest that these results can be explained by thick market externalities.

Number of Pages in PDF File: 58

Keywords: Call markets; Dealership markets; Opening and Closing Markets; International

JEL Classification: G1, G2

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Date posted: May 12, 2002  

Suggested Citation

Ellul, Andrew and Shin, Hyun Song and Tonks, Ian, How to Open and Close the Market: Lessons from the London Stock Exchange (November 21, 2003). EFA 2002 Berlin Meetings Presented Paper. Available at SSRN: http://ssrn.com/abstract=311780 or http://dx.doi.org/10.2139/ssrn.311780

Contact Information

Andrew Ellul
Indiana University - Kelley School of Business - Department of Finance ( email )
1309 E. 10th St.
Bloomington, IN 47405
United States

Hyun Song Shin
Princeton University - Department of Economics ( email )
Princeton, NJ 08544-1021
United States

Ian Tonks (Contact Author)
University of Bath School of Management ( email )
Claverton Down
Bath, BA2 7AY
United Kingdom
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