Market Maker Identification Codes

AANA ABN Amro, Inc. MASH Mayer & Schweitzer, Inc.
ADAM Adams, Harkness & Hill, Inc. MDLD McDonald & Co. Securities, Inc.
AGIS Aegis Securities, Inc. MLCO Merrill Lynch, Inc.
AXCS Access Securities, Inc. MONT Bank of America Securities, LLC.
BARD Robert Baird & Co., Inc. MSCO Morgan Stanley & Co., Inc.
BEST Bear, Stearns & Co., Inc. NEED Needham & Co., Inc.
BRAD JC Bradford & Co., Inc. NFSCV National Financial Services Corp.
CANT Cantor Fitzgerald & Co., Inc. NITE Knight Securities, Inc.
CHIP Blue Chip Trading, LLC. OLDE Olde Discount Corp.
CIBC CIBC World Markets Corp. PERT Pershing Trading Co., LP.
COST Coastal Securities, LTD. PIPR Piper Jaffray, Inc.
COWN SG Cowen Securities, Inc. PRUS Prudential Securities, Inc.
CWCO Crowell, Weedon & Co., Inc. PURE Pure Trading, Inc.
DBKS Deutsche Bank Securities, Inc. PWJC Paine Webber, Inc.
DEAN Dean Witter Reynolds, Inc. RAGN Ragen MacKenzie Inc.
DKNY Dalton Kent Securities Group, Inc. RAJA Raymond James & Assoc., Inc.
DLJP Donaldson, Lufkin & Jenrette, Inc. RAMS Ramius Securities, LLC.
FBCO Credit Suisse First Boston RBCD RBC Dominion Securities, LLC.
FCAP First Union Capital Markets Corp. RSSF BancBoston Robertson Stephens, Inc.
FLTT Fleet Securities Corp. SBSH Salomon Smith Barney, Inc.
GFIN Granite Financial Group, Inc. SELZ ING Baring Furman Selz, LLC.
GSCO Goldman, Sachs & Co. SHWD Sherwood Securities Corp.
HMQT Hambrecht & Quist, LLC. SLKC Spear Leeds & Kellogg Capital Markets
HRZG Herzog, Heine, Geduld, Inc. SNDS Sands Brothers, Inc.
ITGI ITG, Inc. SNDV Soundview Technology Group, Inc.
JBOC JB Oxfrod & Company, Inc. SWCO Schroder Werthheim & Company, Inc.
JEFF Jeffries & Company, Inc. SWST Southwest Securities, Inc
JOSE Josephthal Securities, Inc. TUCK Tucker Anthony, Inc.
JPMS JP Morgan Securities, Inc. TWPT Thomas Weisel Partners, LLC.
KCMO Security Investment Company of KC WARR Warburg Dillon Read, Inc.
LEGG Legg Mason Wood Walker, Inc. WEDB Wedbush Morgan Securities, Inc.
LEHM Lehman Brothers, Inc. WEED Weeden & Company, LP.
MADF Bernard L. Madoff, Inc. WPCO Wasserstein Perella & Company, Inc.

Electronic Communication Networks (ECN's)

ARCA Archipelago ECN
ATTN Attain ECN
BRUT Brass Utility ECN
BTRD Bloomberg Trade Book ECN
INCA Instinet ECN
ISLD Island ECN
MWSE Chicago Stock Exchange
NTRD Nextrade ECN
REDI Spear Leeds & Kellogg ECN
STRK Strike Technologies ECN
MKXT Market XT ECN