The SENSEX Index rose 544 points or 0.7 percent on Monday to close at 78639 points. Leading the gains are Tata Consultancy (3.62%), Infosys (3.55%) and Bajaj Finserv (2.65%). Top losers were Sun Pharmaceuticals (-2.29%), Bharti Airtel (-1.01%) and Maruti Suzuki (-0.94%).