Hedge fund billionaire Paul Singer warned of the coronavirus' effects long before many US officials. In a memo reported on by Bloomberg News, Singer told his staff on February 1 to prepare for lengthy quarantines. The Elliott Management founder also warned of asymptomatic spread before some leaders appeared to be aware of the dangers. Visit Business Insider's homepage for more stories. Paul Singer, billionaire founder of the $40 billion Elliot Management hedge fund, apparently warned his staff of the coronavirus' ramifications well before many other leaders appeared concerned.