Sensex opens at positive note, Sun Pharma down, Cipla drag Nifty down

Sensex was trading 20 points up at 32,422. Nifty Pharma index was trading at 9,274, down 20 points. Reliance, Dr Reddy's, Larsen & Toubro. State Bank of India and Tata Steel were the top gainers. On BSE, 1,122 stocks were advancing whereas 975 stocks were lagging.