Last reviewed 10-31-2026Short-Sale.com Editorialglossary

Cusip Number

Fannie Mae

Updated 10-31-2026

Cusip Number

A nine-digit number, which is required for book-entry delivery of mortgage-backed securities, that uniquely identifies the MBS to which it is assigned.

Fannie Mae Glossary of Terms

Fannie Mae · p. 10

FreddieMac

Updated 10-31-2026

Cusip Number

A CUSIP Number is a unique nine-character alphanumeric designation assigned by the CUSIP Service Bureau to each UMBS®, MBS or ARM PC. The CUSIP Number is used to identify the UMBS, MBS or ARM PC on the books and records of the Federal Reserve Bank's book-entry system. All UMBS, MBS and ARM PCs in Book-Entry Form are identified by a CUSIP Number.

FreddieMac Glossary

FreddieMac · p. 11

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