BSE Sensex tumbled 540 points, or 1.3 per cent to settle at 40,145.50 levels and the Nifty50 index ended at 11,768, down 163 points, or 1.36 per cent
BSE Sensex tumbled 540 points, or 1.3 per cent to settle at 40,145.50 levels and the Nifty50 index ended at 11,768, down 163 points, or 1.36 per cent