Today will be slightly gap up opening expected in banknifty. after opening if banknifty sustain above 51050 level then expected upside rally upto 51450+ level and this can be extend for further 400-500 points if banknifty starts trading above 51550 level in today's session. Downside possible if banknifty gives breakdown of 50950 level. Downside upto 50550 level expected after this breakdown.