Today will be gap up opening in banknifty. After opening if it is sustain above 35050 level then possible 400-500+ points upside rally upto 35450 level. Downside possible if banknifty started trading below 34950 level. 34550 will act as an downside support for today's session. More chances it will take reversal from this support level if downside movement done in first half session.