The Greatest Trade Ever: The Behind-the-Scenes Story of How John Paulson Defied Wall Street and Made Financial History

by Gregory Zuckerman

Quick Summary

Wall Street Journal reporter Gregory Zuckerman tells the story of how John Paulson, a relatively unknown merger-arbitrage hedge fund manager, made $15 billion for his firm in 2007 by betting against subprime mortgages and the housing bubble. The book also follows other contrarian investors who saw the crisis coming, revealing the hubris, conflicts of interest, and willful blindness that allowed the financial system to nearly collapse.

Detailed Summary

Gregory Zuckerman's "The Greatest Trade Ever" is a narrative account of the single most profitable trade in financial history and the colorful cast of outsiders who pulled it off. Based on over 200 hours of interviews, the book reads as both a financial thriller and a devastating indictment of Wall Street's institutional failures.

The central figure is John Paulson, who by 2005 was managing $2 billion in a respectable but unspectacular merger-arbitrage fund. Despite having no background in real estate, mortgages, or credit markets, Paulson became increasingly alarmed by the housing bubble and began researching ways to profit from its collapse. His key insight, developed with analyst Paolo Pellegrini, was that credit default swaps (CDS) on subprime mortgage-backed securities offered an asymmetric bet: the cost of buying protection was trivially small relative to the potential payout if the underlying mortgages defaulted.

The book traces Paulson's journey from initial skepticism (even from his own team) through the painstaking research that confirmed his thesis, the difficult period of carrying the trade while the bubble continued to inflate, and the spectacular payoff when subprime defaults began cascading in 2007. Paulson's firm made $15 billion that year, with Paulson personally earning nearly $4 billion.

Zuckerman also profiles other contrarian investors who made similar bets. Michael Burry, the eccentric one-eyed hedge fund manager portrayed in "The Big Short," was among the first to identify the opportunity. Jeffrey Greene, a real estate mogul, amassed his own massive short position. Greg Lippmann at Deutsche Bank saw the opportunity from inside the Wall Street machine. Some of these investors captured enormous profits; others stumbled at the finish line despite being early to the thesis.

The book's most valuable contribution is its documentation of how the financial establishment missed or ignored the warning signs. Investment banks, rating agencies, regulators, and even sophisticated investors continued to pump capital into subprime mortgages long after the underlying fundamentals had deteriorated. The reasons ranged from perverse incentive structures (originators passed risk to securitizers, who passed it to investors) to institutional blindness (models that assumed home prices could not decline nationally) to simple greed.

Paulson's trade earned more than the GDP of several nations. His subsequent moves in 2008 and 2009 earned $5 billion more for his firm. The story demonstrates that the most profitable opportunities often arise when the consensus is most unanimous and most wrong.