how do you know if a stock will gap up 
nobody can see the future of stock prices but a gap up may occur after a positive news announcement especially if that news is unexpected or better than expected positive earnings surprises news that a stock is a takeover target or the release or approval of a new product can all result in a gap up investopedia does not provide tax investment or financial services and advice the information is presented without consideration of the investment objectives risk tolerance or financial circumstances of any specific investor and might not be suitable for all investors investing involves risk including the possible loss of principal 