The BSE Sensex rose by nearly 232 points in opening trade todayThe 30-share benchmark index, which lost 163.06 points in the previous session, recovered by 231.71 points, or 1.48 per cent, to 15,927.14 within minutes of the opening bell.In a similar fashion, the wide-based National Stock Exchange Nifty index moved up by 66.85 points, or 1.42 per cent, to 4,776.90.