Rally continues unabated... The Sensex is now up 641 points at 18,133.Reliance Energy has zoomed 9.4% to Rs 1,509, and Reliance Communications has soared 7.5% to Rs 689.Maruti has surged 5.6% to Rs 1,083. Tata Steel, Grasim and Reliance have rallied nearly 5% each to Rs 827, Rs 3,590 and Rs 2,533, respectively.ACC, NTPC, SBI, Bharti Airtel and Larsen & Toubro have advanced over 4% each to Rs 1,163, Rs 213, Rs 1,856, Rs 1,024 and Rs 3,139, respectively.Tata Motors and Wipro have moved up around 3% each to Rs 789 and Rs 483, respectively.ITC has gained 2.5% at Rs 183. Dr.Reddy's is up 2% at Rs 641.Out of 2,740 stocks traded so far, 1,680 have advanced, 989 have declined and 71 are unchanged.