The character or characters that may follow the stock symbol to uniquely identify a listed security. It can be a single alphabetic character, two alphabetic characters, or a combination of two plus one characters with a maximum of eight characters for the stock symbol, extension and separator dots in between. For example, BMO.PR.U. Currently, they include: A-B – class of shares B – debentureE – equity dividendH – NEX marketIR – installment receiptsNO, NS, NT – notesP – Capital Pool CompanyPR – preferredR – subscription receiptsRT – rightsS – special U.S. termsU, V – U.S. fundsUN – units W – when issued WT – warrants