Unique number given to a security to distinguish it from other stocks and registered bonds. See: Committee on Uniform Securities Identification Procedures.
A nine-digit number assigned to every stock and registered bond that trades in the United States. The number is assigned by CUSIP, which is owned by the American Bankers Association and is operated by S&P. A CUSIP number facilitates trade and settlement by making each security unique to every other of the same class. CUSIP numbers are recorded in each trade.
A unique identification number that is assigned to stock and bond certificates in an effort to improve the efficiency of clearing operations.