John Paulson is an American billionaire investor and founder of Paulson & Co., known for betting against subprime mortgages before the 2008 financial crisis. This biography covers his investments, hedge fund performance, wealth, and legal disputes for readers researching major Wall Street investors.
John Alfred Paulson is an American billionaire investor and hedge fund founder who established Paulson & Co. in July 1994. He became known for betting against subprime mortgages before the 2008 financial crisis. For investors, finance students, and readers researching Wall Street, his career illustrates how contrarian investments can generate significant gains alongside substantial financial and legal risks.
Key Takeaways
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John Paulson founded Paulson & Co. in July 1994, focusing on merger arbitrage, distressed debt, and event-driven investing.
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Paulson & Co. earned approximately $15 billion in 2007 by betting against mortgage-related securities.
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His firm reportedly earned about $1 billion from the Goldman Sachs ABACUS transaction and another $1 billion from its Citigroup investment in 2010.
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Paulson & Co. managed approximately $38 billion in 2011 before suffering investment losses and converting into a family office in July 2020.
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Paulson's career also includes philanthropy, political involvement, and civil disputes involving family assets and former business associates.
John Paulson's Education and Early Career
John Alfred Paulson was born on December 14, 1955, in Queens, New York. He graduated summa cum laude from New York University in 1978 and earned an MBA from Harvard Business School in 1980.
His career began at the Boston Consulting Group before he joined Odyssey Partners. He later became a managing director at Bear Stearns and a general partner at Gruss Partners.
In July 1994, Paulson established Paulson & Co. in New York, initially specializing in merger arbitrage.
How Did John Paulson Make $15 Billion?
John Paulson identified weaknesses in the US housing bubble and risky mortgage lending practices before the financial crisis.
His hedge fund purchased credit default swaps to profit from declining values and defaults in mortgage-backed securities.
These contracts required ongoing premium payments, meaning the strategy could lose money if mortgage markets remained stable.
When subprime mortgage defaults accelerated in 2007, Paulson & Co. reportedly generated approximately $15 billion in profits.
The trade became the subject of Gregory Zuckerman's book The Greatest Trade Ever Made.
Paulson employed event-driven, distressed debt, and contrarian strategies across financial institutions, corporate restructurings, and gold-related assets.
| Investment or event |
Reported outcome |
| Subprime mortgage trade, 2007 |
Approximately $15 billion in firm-level gains |
| Goldman Sachs ABACUS, 2007 |
Approximately $1 billion in CDS profits |
| UK bank short positions, 2008 |
Included a reported £258 million Barclays position in September |
| Citigroup investment, 2010 |
Approximately $1 billion in gains for Paulson's funds |
| Houghton Mifflin Harcourt restructuring |
Involvement in a multibillion-dollar debt restructuring |
| Advantage Fund, 2011 |
Approximately 36% annual loss |
In September 2008, Paulson & Co. disclosed short positions in Barclays, Royal Bank of Scotland, Lloyds TSB, and HBOS. The Guardian reported a £258 million Barclays position, rather than the sometimes-cited £350 million figure.
During the subsequent economic recovery, Paulson invested in Citigroup. By the end of 2010, the position reportedly generated approximately $1 billion for his funds.
Paulson also participated in the restructuring of educational publisher Houghton Mifflin Harcourt. However, the approximately $4 billion figure associated with its 2010 restructuring concerned first-lien debt, not a verified $4 billion personal investment by Paulson.
His investment performance was not consistently positive. In 2011, the Advantage Fund lost approximately 36%, while Advantage Plus lost roughly 52%.
Why Did Paulson & Co. Become a Family Office?
In July 2020, Paulson announced that Paulson & Co. would return outside investor capital and transition into a private family office.
The firm had managed approximately $38 billion at its 2011 peak but reported around $10.7 billion in assets at the beginning of 2020.
The conversion followed a path taken by prominent investors such as George Soros, whose investment organizations increasingly focused on managing private family wealth.
John Paulson's Net Worth, Philanthropy, and Politics
John Paulson's fortune comes primarily from investment management, fund ownership, and private investments. Forbes estimates have varied substantially over time, making his net worth sensitive to asset valuations.
His philanthropy includes a $400 million donation in June 2015 to Harvard University's engineering school, subsequently renamed the Harvard John A. Paulson School of Engineering and Applied Sciences.
Paulson also donated $100 million to the Central Park Conservancy in October 2012.
Beyond finance, Paulson became involved in Republican economic policy discussions. In August 2016, he was named among Donald Trump's economic advisers.
During the 2024 presidential campaign, he publicly supported Trump and discussed tax policy, financial regulation, and US-China trade relations. His investment activity and political involvement remain distinct from any formal government appointment.
John Paulson's Controversies and Legal Matters
Goldman Sachs and the ABACUS Investigation
In April 2010, the US Securities and Exchange Commission charged Goldman Sachs and an employee with securities fraud involving ABACUS 2007-AC1.
The SEC's enforcement announcement stated that Paulson & Co. helped select mortgage securities while taking an opposing financial position.
The related credit default swaps produced approximately $1 billion in profits for Paulson & Co.
Goldman Sachs settled the case for $550 million in July 2010. Neither John Paulson nor Paulson & Co. was charged in that SEC proceeding.
Divorce and Family Asset Litigation
In September 2021, Paulson filed for divorce from his wife, Jenny (Jenica) Paulson, attracting coverage from the New York Post, Forbes, and Bloomberg News.
Jenny subsequently sued, alleging that Paulson transferred substantial assets into trusts without adequately disclosing their implications. These were civil allegations, not established criminal findings.
In May 2026, Bloomberg reported that the parties agreed to resolve their divorce-related litigation, including the fraud lawsuit. The settlement terms were not disclosed.
Fahad Ghaffar Business Dispute
Paulson also became involved in litigation and arbitration involving former Puerto Rico business partner Fahad Ghaffar.
The dispute concerned investment management, financial arrangements, and allegations of misconduct. In 2026, an arbitrator preliminarily awarded Paulson approximately $47 million.
However, Bloomberg reported in August 2026 that the arbitrator reopened the decision over issues involving evidence. The preliminary award should therefore not be presented as a final resolution of every disputed claim.
Frequently Asked Questions
What is John Paulson famous for?
John Paulson is famous for founding Paulson & Co. and making approximately $15 billion for his firm through bets against mortgage-related securities in 2007.
What happened to Paulson & Co.?
Paulson & Co. transitioned from managing outside hedge fund capital into a private family office in July 2020.
Did John Paulson invest in Citigroup?
Yes. Paulson's funds invested in Citigroup during the financial recovery and reportedly gained approximately $1 billion in 2010.
Is John Paulson associated with Donald Trump?
Yes. Paulson supported Donald Trump and participated in Republican economic policy discussions, including being named among Trump's economic advisers in 2016.
What can investors learn from John Paulson's career?
Paulson's investment history illustrates how market research and contrarian positions can produce major profits, but also how concentrated investments, leverage, timing, and financial uncertainty can cause substantial losses.
* The information is not intended to be and does not constitute financial advice or any other recommendation of any sort offered or endorsed by Gate.
