Subject: File No. S7-16-00, proposed Rule 11Ac1-5 Date: 09/13/2000 10:43 AM US Securities and Exchange Commission Jonathan G. Katz, Secretary 450 Fifth St. NW Washington, DC 20549-0609 Mr. Katz, Jones & Associates, Inc. is registered broker-dealer and NASD member that trades large blocks of stock for institutions. We would like to take the opportunity to opine on proposed Rule 11Ac1-5. We feel that the term "market center" should be specific in excluding members, who are not market makers, specialists or ATSs, and execute or cross orders in the third market. The cost of compliance with the rule would be unduly burdensome. Furthermore, because of the nature of institutional "third market" trading by non-market makers, the data would not provide meaningful information. Lastly, if the Commission were to exclude "market centers" with relatively few orders, the determination of "relatively few orders" should be set by number of executions and not volume. Sincerely, Steven A. Chmielewski, General Counsel, Jones & Associates, In.