The bitcoin is going up because of the halving that is coming this year, this year will be a very good year for the bitcoin if everything will goes like it has been planed by bitcoin itself, Most likely we all gonna make profit this year.
For the people that want to buy coins the halving comes in handy because you can then invest more while the price is down. For the people that ant to sell you have to wait just a little longer for the price to go up again.