The Sensex opened with a small positive gap of seven points at 9,318. Heavy buying in Reliance and other heavyweights saw the index move up to a high of 9,421 in late morning deals.Profit-taking at higher levels saw the index drift into negative zone by the closing bell and touched a low of 9,289 - an intra-day swing of 132 points. The Sensex finally closed with a marginal gain of three points at 9,314.It was Reliance all the way today. The stock zoomed to an all-time high of Rs 937.50, and closed with a gain of over 6% (Rs 55) at Rs 928. The counter logged a huge volume of 1.56 crore shares.TCS moved up Rs 15 to Rs 1,623. While L&T added Rs 18 to Rs 1,861, HDFC Bank was up Rs 9 at Rs 748.Wipro slipped over 2% (Rs 11) to Rs 449. Infosys was down Rs 18 at Rs 2,762.Tata Motors dropped 2% (Rs 13) to Rs 629. Bajaj declined 1% (Rs 19) to Rs 1,999. While Maruti slipped Rs 7 to Rs 651, Hero Honda was down Rs 4 at Rs 834.SBI declined Rs 11 to Rs 907. ICICI Bank was down Rs 8 at Rs 565.Tata Steel was down over 2% (Rs 8) at Rs 348. NTPC, ACC, BHEL, Ranbaxy, Dr. Reddy's, Cipla, ITC and HDFC also declined today.