As trading of spot bitcoin funds got off to a first day of action in the U.S., users with brokerage accounts at Vanguard were not able to participate. When contacted by telephone on Thursday, a day after the Securities and Exchange Commission approved 11 spot funds, a Vanguard customer service representative said bitcoin ETFs were not available on the platform because they were "highly speculative," "unregulated" and didn't fit with the company's long-term investing philosophy. The ...