Nifty rises 137 pts at open after 3-month low; TCS Q1 results eyed

Sensex opened at ₹76,576.14 and rose to ₹76,985.96, up 0.63%, while Nifty 50 opened at ₹23,928.95 and increased to ₹24,019.15, up 0.57%, as of 9:25 AM