Increasing purchases of Egyptian investors pushed indexes of Egypt's stock market to increase during the morning session on Tuesday December 13, while Arab and foreign investors tended to sell their shares. Principal index of Egypt's stock market EGX30 increased by 0.41 percent while EGX20 increased by 0.12 percent. Index of small and medium companies EGX70 increased by 0.58 percent, while EGX100 increased by 0.55 percent. A number of shares witnessed a notable rise on Tuesday December 13, including Swedy Electric by 0.32 percent, Orascom Construction Industries by 0.73 percent, Giza for Contracting by 1.06 percent, Ezz Steel by 0.63 percent, Pioneers by 0.18 percent and Sodic by 0.98 percent.