The Sensex opened on a flat note at 15,296 - up six points. After advancing a bit higher the index slipped into negative zone on account of profit-taking in early trades.The index, thereafter, swung in and out of the positive zone for most of the trading day. A fresh round of selling in late-noon trades saw the index tumble to a low of 15,160 - down 130 points from the previous close - but only to bounce back sharply.The buying momentum was so strong that the index rallied all-the-way into the positive zone to a high of 15,326 - up 166 points from the day's low. The Sensex finally ended with a marginal gain of 11 points at 15,301.
