Nifty will be slightly gap down opening in today's session. The expected opening above the 17860 level and the 17850 to 17900 level is the consolidation range and if nifty breaks the 17900 level this level then the possible upside go up to 17970+ in today's session. in case nifty trades below the 17860 level than possible downside rally up to 100-200 points.