Since it happened overnight for the West which is kind of unusual, my theory is that enough traders in the East were fooled by the April 1 fake news of ETF approvals that it triggered a FOMO up to 5k.
Disagree with the theory. Although maybe there's a chance.
Traders are matured enough not to be driven by the hype of anything after all that we are struck in bearish market for over a year. They are doing research before placing trades. 2018 is the year of hard testing strategies on how to deal with the bear market so FOMO shouldn't be the case in today price movement.
And even there are fooled by fake news, I doubt they can move the price for where it is currently.