Volume governs

The reason is why the cryptocurrencies gained a lot of value this year is that the market capitalization jumped from 16B in January to 116B in June, the volume of money increased 10 times. And most coins gained 10x of their values.

The question that is hovering over, do the prices go more down?

The answer is pretty simple, no they go down slightly or even dip to 80 % of their value !! then come back to the uptrend and the prices will exceed all the previous tops.

But why?

As there was a cap of 116B played in the market this month, then it will not go far, it is a little shy, step back and forth but sooner or later will be in the game again.
Not only 116B is the limit, as long there is a profit from cryptocurrency, then the big investors want to earn more and more and to increase their investments, so the cap will be increased more than the previous record.