Vanguard Chairman and CEO Tim Buckley and Chief Investment Officer Greg Davis on Friday reiterated their company’s position on Bitcoin exchange-traded funds (ETFs), emphasizing their long-held view that Bitcoin (CRYPTO: BTC) is a speculative asset and does not belong in a long-term investment portfolio. What Happened: When questioned about the possibility of Vanguard offering a Bitcoin ETF during a webcast, Buckley stated their lack of plans to do so and that a significant shift in the asset class itself would be required for their stance to change. He elaborated on their reasoning, highlighti…