Number: RL30195
Title: ALTERNATIVE TRADING SYSTEMS: WILL COMPUTERS REPLACE STOCK EXCHANGES?
Authors: Mark Jickling, Government and Finance Division 
Abstract: Computer systems that perform all the transaction functions of a traditional stock exchange, called "alternative trading systems" (ATSs), now account for about 15% of U.S. stock volume and are growing rapidly. Benefits to ATS investors include lower trading costs and better information about market conditions. However, traditional exchanges are not just trading mechanisms; they are regulators. There are concerns of a "regulatory gap" - the ATS may not provide the same level of investor protection and market integrity. In December 1998, the SEC issued rules for ATSs: they may now choose to register as exchanges or to be regulated by a new Regulation ATS. This report presents background information on the ATS markets and on the new SEC rules.
Pages: 11
Date: Updated May 27, 1999