what is the difference between a ticker and an isin 
a stock ticker is an abbreviation for certain stocks or securities that are listed in the order books for an exchange usually limited to three letters or fewer an isin is a unique twelve digit code that identifies any public security in the world unlike the isin ticker symbols are not unique the same company can have a different ticker symbol on each exchange where it is traded and two companies can use the same ticker symbol if they trade in different markets however a given security can only have one isin and vice versa 4the bottom linean international securities identification number or isin is a unique twelve digit code that is assigned to every security issuance in the world this number is used to facilitate the trading clearing and settlement of securities transactions especially across borders 