The Sensex is now up 259 points at 14,507.All index stocks are in positive zone.Ambuja Cements has soared nearly 4% to Rs 136 backed by news of Holcim open offer for additional 20% stake at Rs 154 per share. ACC and Grasim have surged 3% each to Rs 983 and Rs 2,810, respectively. HDFC and BHEL have rallied over 3% each to Rs 1,963 and Rs 1,720, respectively. Tata Motors, Larsen & Toubro and Hindalco have surged 2.8% each to Rs 636, Rs 2,451 and Rs 143, respectively.SBI and ITC have advanced 2.3% each to Rs 1,492 and Rs 162, respectively. Reliance Communications, Satyam, Reliance Energy and NTPC have gained 1.7% each at Rs 504, Rs 425, Rs 737 and Rs 163, respectively.