ANDREW DAVIDSON, one of the most well-respected names in mortgage-backed securities and securitization, is President and founder of Andrew Davidson & Co., Inc., a New York--based consulting firm specializing in the application of analytical tools to investment management. The company provides consulting advice to many of the major firms in the securitization business. It is also a leading provider of prepayment and valuation models for MBS and ABS. Prior to forming the company in 1992, Davidson was a managing director at Merrill Lynch responsible for MBS, CMO, ABS, and Futures and Options Rese...