Today will be gap up opening in banknifty . Possible banknifty open above 39000 level. If it's sustain above this level then expected further upside quick rally of 400-500+ points. It will face resistance at 39450 level. In case banknifty successfully break this level and starts trading above 39550 then this rally will extend towards the 39950+ level. Any downside only possible if banknifty trading below 38950 level.