As I think bit coin price will rise after reward get halved. If miners even can't get the money they invested in mining then they won't mine bit coin and if they do they try to sell it in higher prices than the present price. You may say the other traders who are holding will sell it in normal price but I think after they see lots of selling bid at higher price they also like to get that price for their bit coin. Thus I will store bit coin to enjoy that rise in bit coin price. I am not a expert and this is my personal view.