Is there a particularly reason why all Coins are dropping simultaneously this week? If you
look at the charts you will see a pattern
This year is often the case all coins fall simultaneously. I do not really understand what is the main cause why all coins can fall simultaneously. But I hope that this is only temporary and we will all feel the result at the end of 2018.
maybe it's because of bitcoin price increases too higher and it's not usual and then the price is adjusting the right price for this year. and this gives impact to the altcoin which going to increase so higher too but suddenly, bitcoin price is down and even down too deep and it pushes the altcoin to go down too. although the altcoin is dropping like crazy, there are many altcoins that is trying to stay in that level of the price and some of them is trying to increase more and more.