Competitive Market Makers

• Adirondack Electronic Markets LLC (Bin 4)
• Archelon LLC (Bins 1, 4, 7)
• Banc of America Securities LLC (Bins 2, 5, 8, 10)
• Bear, Stearns & Co. Inc. (Bins 1-4, 7-10)
• Bear Wagner Specialists LLC (Bins 2, 4, 7, 9, 10)
• Citadel Derivatives Group LLC (Bin 3)
• Credit Suisse First Boston Corporation (Biins 2, 7, 10)
• Cutler Group, LP (Bins 5, 6)
• Deutsche Bank Securities Inc. (Bins 1-8, 10)
• Equitec Proprietary Markets, LLC (Bin 5)
• J.P. Morgan Securities Inc. (Bin 9)
• Knight Financial Products LLC (Bins 2-5, 6-10)
• MAKO Global Products LLC (Bin 9)
• Morgan Stanley & Co. Incorporated (Bins 1-7, 9)
• SG Cowen Securities Corporation (Bins 1, 6)
• SLK-Hull Derivatives LLC (Bins 1, 3-10)
• TD Options LLC (Bin 2-4, 8)
• Timber Hill LLC (Bins 1-3, 6, 8, 9)
• Wolverine Trading, L.P. (Bins 1-10)