CSFB Mtge-Backed P-T Ctfs Series 2001-2 Rated By Fitch.

Business Editors

NEW YORK--(BUSINESS WIRE)--Jan. 31, 2001

Credit Suisse First Boston's (CSFB) mortgage-backed pass-through certificates, series 2001-2, classes I-A-1, II-A-1 to II-A-6, II-X, II-P, and AR ($157.5 million) are rated `AAA' by Fitch. In addition, classes B-1 and B-1-X ($4.1 million) certificates are rated `AA', classes B-2 and B-2-X ($.8 million) certificates are rated `A', and classes B-3 and B-4 ($.9 million) certificates are rated `BBB'.

The 'AAA' ratings on classes I-A and II-A senior certificates reflect the 4.00% subordination provided by the 2.50% class B-1, the .50% class B-2, the .60% classes B-3 and B-4, and the .40% unoffered class B-5, B-6 and B-7 certificates. Fitch believes the amount of credit enhancement will be sufficient to cover credit losses, including limited bankruptcy, fraud and special hazard losses. The rating also reflects the quality of the underlying collateral, the integrity of the legal and financial structures.

The trust consists of $164,122,508 worth of 30-year fixed- rate loans. The weighted average loan to value ratio is approximately 78.5%. Approximately 71.0% of the loans were collateralized by single family detached properties. Approximately 86.0% of the mortgagors represented that they would occupy the homes as their primary residence. Approximately 70.0% of the mortgagors originated the loans for the purpose of purchasing a home. The greatest concentration of properties is in California (37%).

The CSFB mortgage-backed pass-through certificates, series 2001-2 was issued pursuant to a pooling and servicing agreement dated as of Jan. 1, 2001, among Credit Suisse First Boston Mortgage Securities Corp. as depositor; DLJ Mortgage Capital, Inc., PNC Mortgage Securities Corp., Greenpoint Mortgage Funding, Inc., and Midwest Loan Services, Inc., as sellers and servicers; and Bank One, National Association, as trustee.