Nifty has reacted perfectly from its congestion zone between 17,650 and 17,900. “It has the highest open interest at the 18,000 CE level and 17,000 PE level, which indicates that even though it is a buy-on-dips market, there is more room on the downside with the current data and hence traders should initiate only hedged positions if done on the long side in Nifty".