a beneficial effect on the market if they enhance efficiency improvements <strong>and</strong> permit exchanges to take advantage <strong>of</strong> scale economies. As well, the creation <strong>of</strong> alliances among exchanges would also enable co-operating exchanges to share high establishment <strong>and</strong> <strong>development</strong> cost <strong>of</strong> new electronic trading technologies which might lead to greater system efficiency. The trend towards <strong>concentration</strong> <strong>of</strong> exchange markets in Europe is well paving its way, but considerable room for improvement remains to attain an efficient market organisation <strong>of</strong> the European trading l<strong>and</strong>scape. In this respect, regulators are challenged to create <strong>and</strong> ensure a stable European regulatory system that is flexible enough to adjust adequately to future technological <strong>and</strong> market <strong>development</strong>s. First initiatives in this direction have already been achieved by a recent agreement on a new legislative process for the European securities market based on the reports <strong>of</strong> the Committee <strong>of</strong> Wise Men (2001). 26
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