Behind Bitcoin you find a huge online marketing machine sucking ordinary people into the game. Recently wealthy people such as Elon Musk has openly supported Bitcoin, first in writing and later in action adding $1.5bn to Tesla’s balance sheet and thereby significantly increasing its earnings volatility. The triangle of Tesla-Bitcoin-Ark and their respective momentum has reinforced each other creating a positive feedback loop luring more investors into these instruments. As we have seen this week the ‘tower of risk’ is beginning to show cracks.