International Securities Identification Number - ISIN

DEFINITION of 'International Securities Identification Number - ISIN'

A code that uniquely identifies a specific securities issue. The organization that allocates ISINs in any particular country is the country's respective National Numbering Agency (NNA).

BREAKING DOWN 'International Securities Identification Number - ISIN'

All internationally traded securities issuers are urged to use this numbering scheme, which is now the accepted standard by virtually all countries. The United States and Canada primarily use a similar scheme known as a CUSIP number.

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