ISIN stands for International Securities Identification Number and is a 12 digit alpha-numeric code used to uniquely identify a tradable security (Shares, bonds, warrants etc). ISIN is generally used for identification of a security during the trading and settlement process.
Understanding the ISIN code.
An ISIN consists of a two letter country code, a nine-digit alpha-numeric identifier, called the National Securities Identifying Number (NSIN), and a single check digit. The NSIN is issued by the National Numbering Agencies (NNA) of the respective country. The check digit is computed according to the modulus 10 “Double-Add-Double” formula
Let us take the ISIN of Infosys as an example.
| Company Name | Industry | Symbol | Series | ISIN Code |
| Infosys Ltd. | IT | INFY | EQ | INE009A01021 |
The break up is as follows:
IN represents the country code i.e INDIA (based upon ISO 3166).
E009A0102: the 9 digit National Securities Identifying Number.
1: The check digit
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