Listing majorly indicates the shares of a company that is on the stock list. It should be a company that has officially been traded on a stock exchange. On a general basis, in many countries, the issuing company applies for a listing, but in some other countries, a company can be listed by an exchange, because the stock has already been traded through informal channels.
Points to remember:
Every stock defines its own rules and listing requirements.
Due to the process being time-consuming and costly, the listing is not considered much favourable for SMEs (Small & Medium Enterprises).