Dear Sadik Aden Dirir, I heartily recommend you to choose portals with quotations of securities, indices and commodities that I use in my daily work with financial data. Hope you will choose something useful for yourself. Most of these financial reports contain stock quotes displayed on an ongoing basis from the world's largest stock exchanges.
If you can pay, you can download integrated market data from Thomson Reuters, Factset, Bloomberg. "Integrated" means that you can all the various bond, equity, and financial data linked up so that you can get a complete picture for a company.
It is possible for you to obtain market data, stocks and bonds, through the market commission, the sample of the study, and in the same country, try to determine the country that you want to study until you get what you want. J.A. Consiglio