Historic #oilprices collapse sends US #stocks reeling, #DowJones losing 600 points @FinancialTimes @MarketWatch @WSJmarkets @WSJbusiness @ReutersBiz @Reuters @business @markets @washingtonpost @nytimes @AP @BBC @CNBC @CNN  @thehill @latimes @HoustonChron https://t.co/uHhX1Tniof