The BSE benchmark Sensex regained over 122 points in early trade today.The 30-share barometer, which had gained 24.42 points yesterday, rose by 122.69 points, or 0.72 per cent, to 17,029.27.The wide-based National Stock Exchange index Nifty was also up by 38.25 points, or 0.74 per cent, to 5,159.05.