With Relative Strenght Index measures getting at very high levels (month 95, week 80, day 85, 4h 91, 1h 81), I decided to sell my Bitcoin ETF. Just a few minutes after that, the price of Bitcoin dropped with 2600 euros in - mind you - just one minute! It happened 15:18 Amsterdam time.
I guess one of the big sharks decided to do the same as I did, just in bigger quantity. This might be a stand alone move, but it is also very likely more moves like this will follow the next few days. Keep safe!