BTC will is creating a Shoulder-Head-shoulder patern.
On mid-long term BTC will follow this trendline in my opinion.
Multiple reasons are listed for bullruns and drops.
Some of these reasons are the listing on the stockexchange (18dec) and the new "weak hands" it will bring allong.
Also worth mentioning is the fact that people are getting a christmas bonus.
Some people will use it to buy the new "trendy" bitcoin.
Keep in mind that this also happend with gold and silver after they got mentioned on TV.
After this "Dip" BTC will rise again, I don't expect a real crash, just a small correction after the 1700% gain this year.
For long term investors (+2-3 months hodler's) there is nothing to worry about, just buy some more in the dip if you want to triple that money in a few months.