This copy is for your personal, non-commercial use only. To order presentation-ready copies for distribution to your colleagues, clients or customers visit http://www.djreprints.com. https://www.barrons.com/articles/the-greatest-trade-of-all-timeand-what-bill-ackman-is-investing-in-now-51600457809 There are many worthwhile candidates on Wall Street for the Greatest Trade of All Time. There’s Jesse Livermore’s bet that the stock market would fall in 1929. He pocketed something like $100 million in profit, akin to $1.5 billion today. There is George Soros’ 1992 bet that the British pound would fall against a basket of other currencies. When it did, the Hungarian-American investor made $1 billion.