By
Shares of Bharti Airtel, country's top mobile operator, fell 3.5 percent to 365.60 rupees after it posted a lower-than expected December quarter consolidated net profit of 10.11 billion rupees ($206 million).
Analysts had expected a net profit of 13.45 billion rupees.
Tata Consultancy Services was up 1.8 percent at 1,220 rupees. The company is scheduled to make what it called a "strategic announcement" around 2:45 p.m.
At 9:30 a.m. (0400 GMT), the main 30-share BSE index was up 0.2 percent at 17,651.9, with 21 of its components advancing. The 50-share NSE index was up 0.06 percent at 5,338.5.