Stock market analyst Salil Sharma has maintained 'buy' rating on Bharti Airtel Ltd stock with a target of Rs 309.

According to analyst, the investors can buy the stock with stop loss of Rs 297.

The stock of the company, on July 13, closed at Rs 299.70 on the Bombay Stock Exchange (BSE).

Current EPS & P/E ratio stood at 24.39 and 12.40 respectively.

The share price has seen a 52-week high of Rs 467 and a low of Rs 257 on BSE.

Accompanying its acquisition of Zain Telecom's African biz for about SUD 10.7 billion, India`s biggest phone operator Bharti Airtel has decided to make an investment of $600 million in the Nigerian mobile market.

Mr. Manoj Kohli, the CEO international and joint managing director, declared that the company will also make investment in rustic telephony and launch a business corporate social responsibility plan, which comprises establishment of educational institutions, which would provide free quality education to poor kids.

"We have set aside 600 million dollars (475 million euros) for investment in the Nigerian market in the next 12 months," Kohli said. "The sum of 300 million dollars will be invested in the first instance."

On July 10, Singapore Telecommunications has increased its holding stake in Bharti Airtel to 32.04% by purchasing around 15.88 lakh shares in the open market.