There is always a logic for everything, the fact that the regular market will be able to hedge and mainly use the bitcoin in the regular market with the same status of regular currencies, as future asset made the boom that we are seeing, more and more the mainstream investment market is looking at bitcoin as an asset, and the more countries, like Canada, Switzerland, US(some sectors) recognize the value of the bitcoin will increase. There are new laws coming that will push the bitcoin over $10000 before or right after new year.
All these spikes and downs are a reflection of something, we just have to read the market and the gossip around it to understand.