EXHIBIT 23.3 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the use of our report on Fechtor, Detwiler & Co., Inc., dated February 10, 1999 included in or made a part of the Annual Report on Form 10-K of Fechtor, Detwiler, Mitchell & Co. for the year ended December 31, 2000. /s/ ARTHUR ANDERSEN LLP Boston, Massachusetts February 27, 2001