Today will be a gap up opening in BANKNIFTY. Expected opening above 40550 Level. After opening if banknifty sustain above this level then possible upside rally of 400-500 points upto 40950 Level. And this rally can extend for another 400 points if it gives breakout of 41050 level. Any Major downside only expected in case banknifty starts trading below 40450 level.