Market data shows that the US spot Bitcoin ETF has accumulated nearly $37 billion in assets under management (AUM) within the first 25 days of trading. According to data shared by Bitcoin Archive, the $37 billion AUM of the Bitcoin spot ETF is equivalent to 39.8% of the $93 billion AUM of gold ETFs, and 28.5% of the total AUM of both types of ETFs at $130 billion.