Personally, I also believe that we could might have seen a $15k worth of Bitcoin after halving however, still we cannot remove the fact that market is still unpredictable. What I am sure is that $15k is soon can be attain, no one know when we will saw it in this state, probably this 2020 or next couple of years.
I also believe that it will reach $15 this year, it's still long way to go for 2020 and a lot of events will happen. Maybe it will break it who knows. A lot of us don't know that 2017 bull run will happen all in sudden. If bitcoin does not reach at this state maybe $13k would. We have a lot of break news today about cryptocurrency if this will continue soon bitcoin will skyrocket to the moon again.