Financial news is always late. It always talks about what just happened as though it were going to happen. They are literally retarded.
Back in 2014 there was an even bigger spike in price over the end of the year. I think what happens is that persons invest in BTC before the year is over so as to not have to declare profits. What happened back then is that the spike was 5 times this last one, in proportion, and it took about a year for the price to go back down to the price it was at before the spike. A bit more than 100$. Then it started climbing again. Now we have already gone back to the price before the spike, around 8k. I expect the bulls to come back now.