There seem to be a real resistance at the 4200 level.

But the floor seems to be at $4000 as well. It's all about the round numbers, because traders love psychological stuff.

I would expect bitcoin to go to $4500, as soon as it breaks $4300. It's pretty much a given, considering how fast the price went from $3700ish to $4100+, basically a 10+% rise in less than a single day of trading.

Whether BTC is going to stay above $4500 consistently is questionable. This seems like an overbought market right now.