The Sensex opened almost flat at 13,435, up four points. The index rallied to a high of 13,536, and is now up 75 points at 13,506.Bharti Airtel has surged 1.6% to Rs 614, and Reliance Communications has spurted over 1% to Rs 414.Hero Honda, HDFC and Larsen & Toubro are up 1% each at Rs 714, Rs 1,682 and Rs 1,339, respectively.
