On November 28, "Dr. Doom" Nouriel Roubini said in an interview: "Bitcoin is very volatile. If you want to preserve wealth, not high volatility, you should stay away from this type of asset." According to data compiled by Bloomberg, about $6.80 billion flooded into US ETFs that invest directly in bitcoin in the period after Trump won the election. The total assets of the 12 ETFs are about $100 billion.