<P> The JSE is governed by its members but through their use of JSE services and facilities, these members are also customers of the Exchange . Although there is only one stock exchange in South Africa, the Stock Exchanges Control Act (repealed by the Securities Services Act of 2004) does allow for the existence and operation of more than one exchange . Each year the JSE must apply to the Minister of Finance for an operating license which vests external control of the exchange in the FSB . </P> <P> The JSE's fully automated (electronic trading) trading system is called the Millennium Exchange, which replaced the JSE TradElect system in 2012, which in turn had replaced the JSE SETS system in April 2007, which had replaced the JSE JET system in May 2002 . </P> <P> The change to the Millennium Exchange involved moving the platform from London to a new platform housed in the JSE building in Johannesburg, thus speeding up the execution of transactions . The JSE operates an order - driven, central order book trading system with opening, intra-day and closing auctions . </P> <P> In August 1997, the JSE launched the real - time Stock Exchange News Service (Sens) to enhance market transparency and investor confidence . Initially, it was optional for listed companies to use the service during its two - month trial period . </P>

Johannesburg stock exchange (jse) - listed companies