Nelson Chai is Chief Financial Officer of Merrill Lynch & Co., Inc. Previously, he served as Executive Vice President and CFO of NYSE Group. Prior to the merger of NYSE and Archipelago, Mr. Chai was the CFO of Archipelago. Prior to joining Archipelago in June 2000, Mr. Chai was Senior Vice President of Business Development and a member of the Executive Committee of Dade Behring, Inc., a leading manufacturer of medical diagnostics products. He joined Dade Behring in 1997 as Corporate Vice President of Worldwide Field Finance, where he was responsible for the finance organization for all company business operations.