a1 firstname.lastname@example.org, University of Wisconsin-Madison, School of Business, Department of Finance, 975 University Avenue, Madison, WI 53706.
In 1997, the Securities and Exchange Commission enacted significant reforms in U.S. markets. Several studies document that the new order handling rules increased competition for Nasdaq stocks, but the reforms were designed with an additional goal in mind—to increase quote competition for the trading of NYSE-listed securities on Nasdaq (i.e., third market trading). An evaluation of the reforms in the third market indicates that they did not achieve this objective. Instead, both quote quality and quoting frequency were diminished, due primarily to elimination of the excess spread rule. This suggests that more significant changes are needed to increase inter-exchange competition.