The Capital Market Authority (CMA) is the Saudi Arabian government organization responsible for regulating the Saudi Arabian capital markets. It has financial, legal and administrative independence and reports directly to the Prime Minister. Its responsibilities include setting rules and regulations, making sure they are followed, operating a committee to settle disputes and developing the capital markets in Saudi Arabia. Its role also includes regulating the Saudi Stock Exchange Tadawul.

http://www.cma.org.sa/

Tadawul is the only stock exchange in Saudi Arabia. It is regulated by the Capital Market Authority (CMA). The Council of Ministers approved on the 19th of March 2007, the formation of The Saudi Stock Exchange (Tadawul) Company. This was in accordance with Article-20 of the Capital Market Law establishing Tadawul as a joint stock company. It lists 169 publicly traded companies (as of January 1, 2015). Its trading hours are 11AM to 3:30PM, Sunday to Thursday.

http://www.tadawul.com.sa/

Under Royal Decree N° (A/19) issued on 25 February 2010 the Economic Cities Authority (ECA) was established. The ECA has been given full administrative responsibilities for the development and oversight of the Economic Cities ; therefore, the ECA will play several roles in order to protect the competitiveness, efficiency, and uniqueness of these substantial projects as well as to avoid complex and bureaucratic routines that may delay or obstruct the flow of business and it addresses the strategy and unique prospects of the Economic Cities in order to ensure that they truly embody an ideal investment environment capable of supporting and contributing to the progress and growth of the Saudi economy. The Economic Cities regulatory framework adheres as well to the values and common morals of the Kingdom.

http://eca.gov.sa/