3235-AK62 201010 The Regulatory Plan and the Unified Agenda of Federal Regulatory and Deregulatory Actions 3235 Securities and Exchange Commission SEC Proposed Amendments to Rule 610 of Regulation NMS Substantive, Nonsignificant First Time Published in The Unified Agenda Final Rule Stage Undetermined No 17 CFR 242.610(a) 17 CFR 242.610(c) 15 USC 78f 17 USC 78k-1 No NPRM 04/20/2010 NPRM Comment Period End 06/21/2010 Final Action 04/00/2011 No None No www.gov.rules/proposed/2010/34-61908 No No Jennifer Colihan L. 3235 Securities and Exchange Commission SEC 202 551-5642 colihanj@sec.gov Division of Market Regulation, 100 F Street NE, Washington DC 20549