CUSIP, Header

Category: Identification

Data Type: String

Summary

The latest 8 character CUSIP identifier for a security.

Extended Information

CUSIP - Header is the latest 8 character CUSIP identifier for the security through the end of the file. CUSIP identifiers are supplied to CRSP by the CUSIP Service Bureau, Standard & Poor's, a division of McGraw-Hill, Inc., American Bankers Association database, Copyright 1987.

CUSIP identifiers were first assigned in 1968 as integers and expanded in 1984 to include alphabetic characters. The first six characters (including leading zeroes) identify the issuer, while the last two characters identify the issue. CUSIP issuer identifiers are assigned to maintain an approximately alphabetical sequence. The CUSIP identifier may change for a security if its name or capital structure changes.

No header or historical CUSIP is reused on our files. For securities no longer in existence or that were never assigned an official CUSIP identifier, CRSP has assigned a dummy CUSIP identifier for use in this field in accordance with the rules published in the CUSIP Directory. There are two potential types of dummy CUSIP - Headers which are assigned by CRSP. One, ***99*9*, (containing a 9 in the fourth, fifth, and seventh character positions) represents a CRSP-assigned CUSIP with a dummy issuer number (the first 6 character positions) and a dummy issue number (the last 2 character positions). The other, ******9*, (containing a 9 in the seventh character position) represents a CRSP-assigned CUSIP with a real issuer number but a dummy issue number. For example:

A CUSIP - Header such as 12399099 or 12345699 is assigned by CRSP, and an identifier such as 12345610 is assigned by the CUSIP Agency.

Securities actively traded on an international basis, domiciled outside the United States and Canada, will be identified by a CINS (CUSIP International Numbering System) number. CINS numbers employ the same identifier system set by the CUSIP Numbering System: Issuer (6 characters) plus Issue (2 characters) per 8 characters. It is important to note that the first portion of a CINS code is always represented by an alphabetic character, signifying the issuer's country code (domicile) or geographic region. For more information, see the current CUSIP Directory and see Share Types.

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