Shares of Indian software services provider Infosys Ltd gained nearly 8 per cent in opening trade on Monday after the announcement of founder & former chairman N. R. Narayana Murthy's return to the company as executive chairman.

The return of Mr. Murthy was announced on Saturday, as the company continued to lose market share.

Stock in Infosys, the country's second largest software services provider, jumped 7.74 per cent to Rs 2,594 a share in early trade today.

The Bombay Stock Exchange (BSE) benchmark index Sensex gained as many as 99.89 points to 19,860.9 points, while the National Stock Exchange (NSE) index Nifty enjoyed a jump of 25.05 points to 6,011 points.

Infosys was the biggest gainer on the 50-share Nifty benchmark.

Sixty-six-year-old Murthy had started Infosys in partnership with six engineers in the year 1981. He had retired from the top job at the company in August 2011 to become chairman emeritus.

Infosys, which was started by pooling just US$250 in 1981, has grown to more than US$7 billion in revenues.

Mr. Murthy will assume his new role at the software firm for five years starting June 1.