This Bull Run is good and all but the gap up occurred on the 14th of March never got filled properly and is always a concern. Only if that gap was filled, it would have been awesome. If it gets filled before the big move then it will be more assuring up move. Till then the Big Players(FII's) would be looking for even the smallest of triggers to bring the market down and with Mr.Trump always in action the triggers aren't that rare too. Lets see how things pan out.
P.S. Bank Nifty filled its gap in the last week.