A Stock exchanges ticker symbols - known as stock symbols - to represent companies listed on their stock exchange; a ticker symbol is an abbreviation, consisting of letters or numbers, that is a unique identifier for a company. The use of ticker symbols dates back to the use of Thomas Edison's telegraph ticker machine; which needed to use abbreviations to save on time and tape. The ticker symbol for the Adidas Group AG is ADDYY. If an investor wishes to buy Adidas stock, then they can easily search the Internet using the ADDYY ticker symbol, and websites with provide the stock price, day range, stock chart, company news, dividend yield, key statistics, fundamentals and market cap. The Adidas Group is categorised as being a part of the 'consumer discretionary' sector and within the 'apparel and textile products' industry.