Benchmark equity indices snapped a two-day losing trend to bounce back on Tuesday, led by gains in index major Tata Consultancy Services, Tata Motors, and Sun Pharma amid mostly firm global markets. The BSE Sensex jumped 305.09 points or 0.42 per cent to settle at 73,095.22. The NSE Nifty ended 76.30 points or 0.34 per cent up at 22,198.35.