From USD2000 dropped down to USD1400 for only 2 days?
Anyone knows what is happened?

We don't know much about trading, one of which is the influence that big players have. if the big traders have already made trades, they can take control of the situation. whether they will raise prices or vice versa. but this is just my assumption

This is what we called manipulation, it's happening although we are just speculating it, but by judging on how volatile the price is, it looks like whales are still in control in the market although people say that institutional investors have already joined the game.