MUMBAI: India’s Sensitive Index rose for a fourth trading session, erasing gains during the day. Infosys Technologies Ltd, the nation’s second-largest software maker, led the advance on continued demand for its services from overseas customers.

"The software sector looks good because of the continuing strong demand environment and the falling rupee,’’ said Viswanathan Vasudevan, who helps manage $185mn of assets at Aquarius Investment Advisors Pte in Singapore.

The Bombay Stock Exchange’s Sensitive Index, or Sensex, rose 46.97, or 0.4%, to 10,923.16 at the 3.30pm local time close, after rising as much as 1.9% during the day.

The S&P/CNX Nifty Index on the National Stock Exchange, also in Mumbai, gained 7.90, or 0.3%, to 3190.

The Sensex plunged about 150 in the last 45 minutes of trading on "profit booking’’, said Apurva Shah, vice president, sales at Mumbai-based brokerage Prabhudas Lilladher Pvt.

"A bit of profit booking is expected at this level,’’ Shah said. "The low volumes in the past few days indicate a lack of conviction among investors in the rally. A rally on high volumes is more sustainable.’’

Infosys rose Rs5.45, or 0.3%, to 1,670.2. Wipro Ltd, India’s third-biggest software company, added 1.1%, to Rs508.3.

Satyam Computer Services Ltd, the fourth-largest, climbed 1.1% to 763.2. Tata Consultancy Services Ltd, the country’s biggest computer services company, gained 0.3% to Rs943.45.

The rupee gained the most in a week on speculation global funds are increasing equity purchases as signs of a slowdown in the US, the world’s biggest economy, lures them to emerging markets.

The rupee rose 0.3% to 46.564 against the dollar at the 5pm close of trading in Mumbai, according to foreign- exchange broker, Kanji Pitamber & Co. – Bloomberg