Near midday Aug. 17, the Nasdaq Composite was down about 56 points, the Dow Jones Industrial Average had shed roughly 189 points and the S&P 500 was lower by about 23 points. The leading crypto asset bitcoin (BTC), meanwhile, was up roughly 1% to 1.5% over 24 hours, trading around $64,000 by 1:30 p.m. EDT.