Billionaire Bill Ackman explained how he pulled off a deal described as 'the single best trade of all time'

· In an op-ed for the New York Times, former investment banker William Cohan described Bill Ackman's bet on the coronavirus tanking the stock market as 'the single best trade of all time.'
· Billionaire hedge-fund investor Bill Ackman turned his relatively modest $27 million hedge fund position into a prize-winning $2.6...