Bitcoin ETFs have picked up billions since their launch last week. Why it matters: In just four trading days since listing on exchanges, investor flows in some of 10 are stacking up to broad-market funds, according to Bloomberg Intelligence data. The big picture: It's too early to crown any one of them bitcoin ETF supreme. Many of the traditional finance venues — where these products would be bought and sold — tend to go slow in determining which, if any, they should offer. (Blame it on compliance.) At the same time, the leaders are emerging. Zoom in: Nine spot bitcoin ETFs, plus Grayscale's converted trust, received ... (full story)