For the remaining days for this year maybe they have some possible movements happen to the bitcoin or not. Depends to the people if they want to dump more the price of the bitcoin or they want to up the value for this moment.
It is an all time best option whenever you are facing the downward trend because bear in mind that this money will not go anywhere else if you hold it despite the loss in the value. The recovery is always there.
That is a right strategy and is a right point of view that if someone do not sell their coins at lower price then he will not lose their money as anytime a coin drop in value in cryptocurrency it always recover. So if the holder will sell after seeing the price recovered then he will get the expected profit.