Bitcoin (BTC-USD) and company are proving no place to hide in this evening's big risk-asset selloff.With S&P 500 futures down 4% alongside a 20%+ plunge in the price of oil, Bitcoin is lower by 8%.Ether (ETH-USD), Litecoin (LTC-UD), Bitcoin Cash (BCH-USD), and Ripple (XRP-USD) are faring even worse.Previously: U.S. stock index futures down more than 3% as oil plunges (March 8)