In highly volatile trade, the BSE benchmark Sensex today erased initial losses and jumped over 434 points after Finance Minister Arun Jaitley in his maiden Union Budget announced steps to strengthen investor confidence, improve fiscal situation and boost growth.

All the sectoral indices, led by realty, power and metal sectors, were trading in the green on emergence of buying driven by budgetary proposals.

After slumping over 300 points at around noon, the 30-share benchmark Sensex was trading higher by 434.23 points, or 1.71 per cent, at 25,879.04. Intra-day, the index has swung nearly 665 points as investors resorted to alternative bouts of buying and selling.

The broad-based National Stock Exchange index Nifty regained 7,700 point mark by surging 125.15 points, or 1.65 per cent to 7,710.15 point after shuttling between 7,713.45 and 7,479.05.