Public offering may be defined as the sale of stocks to several and unknown investors through a call and announcement.

 
The method of public offering of company stocks may vary subject to different conditions.

Stocks that are publicy offered can be traded at the Stock Market (SM) or at the Emerging Companies Market (ECM) .

 
Companies may choose to offer to public part of the stocks representing the existing capital through sale of existing shares or to increase capital, restricting the pre-emptive rights of existing shareholders, or apply both methods concurrently.