The S&P BSE Information Technology Index has gained more than 48% this year, trouncing the Nasdaq 100’s performance by about 31 percentage points and heading for the biggest annual beat since 2009.

The Indian measure — where Asia’s biggest software exporter Tata Consultancy Services Ltd. and outsourcing giant Infosys Ltd. make up more than half of the weighting — has benefited from global demand for automation and digital services. The Reserve Bank of India’s benign monetary policy stance and a selloff in China’s tech shares are also aiding flows into the nation’s $3.5 trillion stock market.