The Nifty formed a bearish candle and closed nearly flat, and needs to hold above 18,250 zones to move upwards towards 18,400 and 18,442 zones; support is placed at 18,181 and 18,081 marks. India VIX rose by 1.03%, and volatility has been increasing for the last four sessions. Analysts suggested that Nifty is expected to consolidate in a broader trading range between 17,900 and 18,500 zones and trade in an immediate range of 18,150-18,450 zones