More people are now investing into bitcoin that is the reason why the price went up that fast in the past days. Maybe right now we are just experiencing some correction that is why the price is hovering in the $13,000 level but I still expect for the price to go beyond $18,000 before the year ends.
Main reason to this move in the bitcoin are mostly lot of people now interested and invest in the bitcoin system so the price of bitcoin in day by day increased at now the rate of bitcoin is $13651 and two days back it touch near $17300 near so in future it Cross much much high because it a digital currency system and profit of bitcoin is also high so to this reason only bitcoin move fast .