Benchmark indices rebounded from a virus-led slump to open higher on Tuesday, as auto and state-owned bank stocks jumped, and as the government ramped up vaccinations to counter a stubborn surge in COVID-19 cases. The NSE Nifty 50 index rose 1.1% to 14,511.35 by 09:25AM, while the S&P BSE Sensex climbed 1% to 48,426.06.