Is this a common occurrence for cryptocurrencies?
Bitcoin= sound money
Yes.
Bitcoin sound money and these drops overnight are very normal happenings in the market. And whenever it drops a lot, you'd see the domino fall because the altcoins market are also following. So the reason for this is simple, Bitcoin is highly volatile and that's why it moves a lot from time to time but sometimes, it doesn't move at all for a couple of days. But when it does, expect that it's only two of it, either up or down.
That's how the market works, and I believe it is also common in cryptocurrency for many reasons. First, for me, the reason is having 24/7 availability to trade; unlike the stock market, there are only specific trading hours you can trade.
Another thing is that the Bitcoin market cap, market cap could still be a factor, especiallya few years back, where we can see strong volatility comparedto these days. I'm curious what will happen to the volatility if market cap of Bitcoin will multiply in the future.
I agree, when this kind of market is open 24/7/365 then there will be a lot of volatility. As no one sleeps here, when the others side of the world is resting, then us are awake an continue to trade and so it's a continues flow of money, billions of dollars are traded. We have heard that there is this argument that market cap is not that important. But we all know that it's like a trigger for the market. Whether price of Bitcoin is going down or up. So for me it is still considered a gauge as how dominant Bitcoin is and will remain like that. And if the question that why Bitcoin drops overnight, then wait for how Bitcoin goes as well. And that is very evident in the bull run that we have right now. Although there is a slight drop, we are still very confident that we will make a huge run and go to another all time high in the following months.