Lol, 20k overnight that's so beyond our limitation lol. We can't really attain 20k overnight. 9k to 20k? I think this will not be the case of bitcoin. I think the pullback of price is connected to what happened to myetherwallet. So the chance of pullback is 100%.
Haha, I just want to remind you that recent ATH happened just like that - out of the blue.
At that time no one expected that price will cross 10k USD, and instead we doubled that.
With bitcoin we need to assume one thing - the trading of cryptocurrencies is nothing like a stock market.
here we can go to $20k overnight - as it happened before - the problem is that the price most likely won't be stable.