From the past 4 weeks, the index has been trading in the range of 17770 to 18200. The underlying tone of the market is sideways to negative as the index had formed a bearish engulfing pattern on the monthly chart which is a bearish reversal sign. On the lower side, the index has strong support at 17800 level as it is neckline of Inverted head and shoulder pattern and 100 EMA support on daily chart.