The BSE benchmark Sensex rose by 191 points in early trade.The 30-share index, which gained 63 points yesterday, moved up further by 191.52 points, or 1.23 per cent, to 15,709.44 points with metals, banking and realty stocks leading the rally.The wide-based National Stock Exchange Nifty index moved up by 55.80 points, or 1.20 per cent, to 4,692.55.