The Sensex continues to hold the support of 10,855. The index is now up 66 points at 10,868.Tata Motors has surged 2.8% to Rs 919.Reliance has added 2.3% to Rs 759. Tata Power and Satyam have gained over 2% each at Rs 575 and Rs 821, respectively.HDFC and Gujarat Ambuja have advanced 1.8% each to Rs 1,344 and Rs 99.50, respectively.Tata Steel, HDFC Bank, TCS, SBI, Maruti, Grasim and Hindalco are the other prominent gainers among the Sensex stocks.''Ranbaxy has plunged 1.6% to Rs 407.Wipro, HLL and ITC have declined 1% each to Rs 518, Rs 255 and Rs 174, respectively.The market breadth is marginally positive. Out of 2,365 stocks traded so far, 1,218 have advanced, 911 have declined and 70 are unchanged.Reliance Communication Ventures (RCoVL) tops the value chart with a turnover of Rs 156.98 crore followed by Indotech (Rs 100.23 crore), Prathiba (Rs 91.11 crore), Reliance (Rs 63.90 crore) and Reliance Capital (Rs 47.76 crore).Reliance Capital Ventures leads the volume chart with tradres of around 1.37 crore shares followed by Reliance Energy Ventures (63.82 lakh), Reliance Natural Resources (52.43 lakh), Prathiba (52.42 lakh) and Indotech (49.41 lakh).