A CINS number is an extension to the CUSIP numbering system, which is used to uniquely identify securities offered outside of the United States and Canada. Just as with CUSIP numbers, the CINS number consists of nine characters. International securities, whether corporate or municipal, are identified by a CINS number. CINS is an abbreviation for CUSIP International Numbering System.


CINS was conceived in the 1980s as part of an effort to extend the CUSIP system to international securities. Currently, the CINS system contains entries for approximately 1.3 million different securities. Just as with CUSIP numbers, CINS number consist of nine characters. Each issuer is assigned a unique six-digit number. The next two characters identify the unique security issue. The final character is a check digit to help ensure the first eight digits were received or entered accurately. A unique feature of the CINS system is that the first character is always a letter signifying the domicile country of the issuer.

Why CINS Numbers are Significant

CINS is comparable in intent to International Securities Identification Number, which was adopted by countries outside of North America for largely the same purpose.

As an extension of the CUSIP system, CINS numbers are ultimately under the management of Standard & Poor’s, with the entire system owned by the American Bankers Association.

The use of CINS, along with the CUSIP, instead of ISINs are part of what separates the North American–based system from how the rest of the world operates. There has been some disparity in the past between the European Commission and Standard & Poor’s regarding obtaining ISIN identifiers for securities for companies from the United States.

CINS numbers and equivalent identifiers are significant because the codes are used for the resolution of securities transactions and other purposes that allow financial institutions to report transactions to authorities. Though more than one system exists, the codes are not interchangeable across these systems and they cannot be substituted. This means each security has an identifier for both the CUSP and the ISIN systems. Therefore CINS numbers must be used with CUSIP and ISINs must be used with their respective system.

The European Commission took issue with Standard & Poor's in 2009 regarding the licensing fees that were charged to financial firms in Europe to gain access to U.S. ISINs, which are needed for securities transactions and other purposes. The European Commission asserted that while other providers of such identifying numbers did so free of charge or only charged enough to cover the costs of offering them, the fees Standard & Poor’s required came across as a monopolistic abuse of its role as the sole provider of U.S. ISINs.

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