The securities exchange is being seen as a source of cheaper financing than that offered by commercial banks. The central bank's governor, Francois Kanimba, said that at first the stock exchange would only be open to Rwandan companies. Many businesses from the country's manufacturing, mining, tourism and real estate sectors should eventually be listed on the stock exchange, he envisaged. In time, foreign companies will be allowed to enter, either to raise finance by listing in Rwanda or to buy shares. Last week the bank issued treasury bonds worth more than $36m to support the stock exchange project.