According to @EricBalchunas, Vanguard will allow ETFs and mutual funds tracking Bitcoin and select other cryptocurrencies to begin trading on its platform starting tomorrow, source: @EricBalchunas. Vanguard cited that these ETFs have been tested and performed as designed across multiple periods of volatility, source: @EricBalchunas. Original story via @emily_graffeo, source: @EricBalchunas.