nobody can foresee the future but I think that bitcoin will rise in price much higher than the last ATH because of many factors. The difficulty is rising so it becomes even more difficult to mine bitcoins and the reward halves every 4 years (May 2020 is the next halving) and the ask for bitcoin rises aswell as it becomes more and more acceptable payment for a lot of online and offline shops... I wouldnt be surprised to see bitcoin rise to 50,000$ after May 2020...