Nifty showed nervous movement on friday, and will open gap up due to global cues.
after a gap up, it wont be easy for nifty to rally rightaway, and if 4550 is not crossed in the gap up, it can fall to 4494.
however i feel, nifty will get strong support around 4490-4500 and can move up.
if 4450 is crossed, nifty can rally up to 4653, where it would be ideal to take positional shorts again depending on the situation.