Third market broker-dealers: cost competitors or cream skimmers?

Article Abstract:

This article compares the bid-ask spread for New York Stock Exchange (NYSE)-listed securities before and after a major third market broker-dealer, Bernard L. Madoff Investment Securities (Madoff), begins to selectively purchase and execute orders in those securities. Tests reveal that quoted bid-ask spread tightens when Madoff enters the market. Furthermore, trading costs as measured by the difference between the transaction price and the midpoint of the contemporaneous bid-ask spread do not increase. Together, these results suggest that the adverse selection problem associated with allowing agents to selectively execute orders in exchange-listed securities may be economically insignificant. (Reprinted by permission of the publisher.)

Securities dealers, New York Stock Exchange Inc.

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Merging markets

Article Abstract:

We study the causes and effects of the competition for order flow by U.S. regional stock exchanges. We trade the origins of competition for order flow to a change in the role of regional exchanges from being venues for listing local securities to being more direct competitors for the order flow of NYSE listings. We study the way regionals competed for order flow, concentrating on a series of stock-exchange mergers that occurred in the midst of this transition of the regional exchanges. The merging exchanges attracted market share and experienced narrower bid-ask spreads. (Reprinted by permission of the publisher).

Competition (Economics)

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