The CUSIP number of a particular company's stock can potentially be found on its official website, in a section written for potential investors. Investment companies such as Fidelity Investments also provide stock search systems that can display a particular company's CUSIP number.
The CUSIP number is created and owned by the American Bankers Association, but Standard & Poor's is responsible for daily operations. The CUSIP number is used to identify U.S. and Canadian stocks as well as municipal and government bonds issued in the United States. The number is made up of nine characters that are unique to a particular company or stock issuer, and it can be made up of both letters and numbers.