This is common and was expected due to the Bitcoin Halving. Some were also expecting that price to be maintained until the end of the year. Some (most daily traders and newbie investors) find it a disadvantage as it will not increased more than it's ceiling price (which is approx $10,000+) at the end of the year or even up to years to pass, hence forcing them to hold and invest in the long run (not unless he's a professional trader). Overall, the 78% increase isn't really that drastic enough to reach it's highest price on all time ($20,000+).