Two weeks ago Goldman Sachs took over BTC by way of introducing 'futures trading' which allows major sellers to cover losses when they sell billions of dollars of BTC.
All along it was predicted it would take 2+ weeks for the 'big whales' to figure out the 'futures' deal, and start exiting from BTC, in the past everybody feared a singularity exit would cause a collapse, now with 'insurance', nobody cares if the price drops, as you still get big money from your covered short on the futures market.
In the past 3-6 months many newbie morons have sold their houses, cars, and used the credit-card to BUY BTC, that's always telling when the morons step-in that its' over, and the guys holding this shit since 2012+ are not going to HODL forever.
Some transaction costs now approaching $150 to get out of BTC, it was only a year ago that the 'leaders' of BTC we're talking free transaction fee's for the world and that bitcoin would be the bank of the poor.
Now BTC is just a haven for the rich, and only the rich ( ppl with enough money that losing don't hurt ) can play.
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Now to XMAS BTC will go down, next year it all depends how many ppl were HURT and how loud they complain for government regulation to make it all 'even'.
PPL who want to play BlockChain musical chairs ought to find a coin that is out of GOV GAYDAR, and just accumulate and wait/watch.
Bitcoin didn't colaps! It went down 33%, that's it. It's part of it's growth. It will stabilise and start moving forward again.