Nifty will be gap up opening in today's session. The expected opening above the 18400 level and the 18380 to 18430 level is the consolidation range and if nifty breaks the 18430 level this level then the possible upside go up to 18520+ in today's session. in case nifty trades below the 18380 level than possible downside rally up to 100-200 points.