There are always small speculative bubbles here and there, it happened exactly like that 6, and 12 months prior. It's interesting how bitcoin prices are highly cyclical. I think there's going to be ONE MORE expansion, in approximately 3 months, that takes the price of btc to about 5k, although it may pop as high as 10k on its way. If for no other reason than there are often self-fulfilling prophecies in finance.