The Egyptian stock market ended the week's transactions down Thursday, driven by the sales of Arab and foreign investors responding to news of an explosion on the gas pipeline to Israel and security concerns in the governorates of Kafr el-Sheikh, Damietta, Qena, and Sohag. Losses totaled 1.97 billion EGP (U.S. $330.5 million). Transactions were valued at 8.6 million EGP (U.S. $1.4 million) The principal index, the EGX 30, fell by 0.77 percent to close at 4,383 points. The small and medium companies' index, the EGX 70, fell 0.81 percent. The EGX 20 fell by 0.61 percent, and the EGX 100 fell by 0.79 percent. Egyptian investors made up 93.44 percent of Thursday's transactions, while foreign investors made up 5.08 percent, and Arab investors made up 1.58 percent. Shares falling on the day included SODEC by 1.8 percent, Commercial International Bank by 1.04 percent, Talaat Mostafa by 0.57 percent, Citadel by 1.2 percent, Orascom for Construction by 1.2 percent, Palm Hills by 0.72 percent, and Saeed General Contracting by 1.4 percent.