The CAC 40 Index gained 27 points or 0.33 percent on Monday to close at 8306 points. Gains were led by STMicroelectronics (3.78%), Schneider Electric (2.77%) and Legrand (2.36%). Biggest losers were Edenred (-2.69%), Dassault Systemes (-2.19%) and Michelin (-1.69%).