VTI (Vanguard's Total Stock Index), a large size fund is on average traded 3,670k per day. I doubt those VTI transactions are each of a single share, which is

VTI (Vanguard's Total Stock Index), a large size fund is on average traded 3,670k per day. I doubt those VTI transactions are each of a single share, which is the only way the 3.67M number you cite would match VTI's trading history. But nobody's mind was ever changed about Bitcoin on an HN comment thread, so let's just leave it at that.