Dont know what is the reason but i also saw that the price is jumping above $600 btc rate but it is not getting stable so i think it will take more time to get the rate stable above $600.
It doesn't really matter what the reason for this price jump is. The important thing is that we are moving upwards. I hope the $600 price point will be maintained in the coming days. But for that to happen the buy support must get stronger because a relatively small dump will push the price below $600 again.