Temporary Rule Regarding Principal Trades with Certain Advisory Clients File No.: S7-23-07 Effective Date: September 30, 2007, except 17 CFR 275.206(3)-3T will be effective from September 30, 2007 until December 31, 2009 Comments Due: November 30, 2007 Federal Register version Comments received are available for this proposal. Submit comments on S7-23-07 See also:Small Entity Compliance Guide