Yesterday we broke the 800$ cap and now we are at 861$. That's a lot too fast to be something healthy, and I think this is just another boring pump. Until which point it will go and when it will calm down and to which point is another discussion.
this was a fast rise for sure, and it was a new thing after a very long time in bitcoin that something like this happened with the price. but i would never call this a bubble because it is too small a rise to be a bubble. the price has gone up 7-8% and with bitcoin you can not call that a bubble.