Introduction
Joel Greenblatt built one of the most impressive track records in modern investing history, then did something few Wall Street legends ever do: he explained exactly how he did it. Through Gotham Capital’s remarkable returns and his bestselling books, Greenblatt has become one of value investing’s most respected and accessible teachers.
This article covers his career, his famous Magic Formula strategy, and the philosophy that built his reputation.
Who Is Joel Greenblatt?
Joel Greenblatt is an American hedge fund manager, academic, author, and value investor, born on December 13, 1957, in Great Neck, New York. He is best known for founding Gotham Capital, achieving some of the strongest investment returns of his era, and later popularizing his “Magic Formula” investing strategy through his bestselling books.
Beyond fund management, Greenblatt spent more than two decades teaching at Columbia Business School, sharing the same value investing principles that built his own career.
Quick Facts Table
| Detail | Information |
|---|---|
| Full Name | Joel Greenblatt |
| Date of Birth | December 13, 1957 |
| Birthplace | Great Neck, New York, USA |
| Education | Wharton School, University of Pennsylvania (BS, MBA) |
| Founded | Gotham Capital (1985) |
| Known For | Magic Formula Investing, value investing, special situations |
| Notable Books | You Can Be a Stock Market Genius, The Little Book That Beats the Market |
| Academic Role | Adjunct Professor, Columbia Business School |
Early Life and Education
Joel Greenblatt developed an interest in the stock market from a young age. He attended the Wharton School at the University of Pennsylvania, earning his bachelor’s degree summa cum laude before completing his MBA there as well. During his time at Wharton, he co-authored an academic paper titled “How the Small Investor Can Beat the Market” alongside Rich Pzena and Bruce Newberg, an early sign of his lifelong interest in making sophisticated investing strategies accessible to everyday investors.
After Wharton, Greenblatt briefly studied law at Stanford Law School before deciding to leave and pursue a career in finance instead.
Founding Gotham Capital
In 1985, Joel Greenblatt founded Gotham Capital, a private investment partnership, with $7 million in starting capital, the majority of which came from financier Michael Milken. What followed became one of the most celebrated runs in hedge fund history.
An Extraordinary Track Record
Between 1985 and 1994, Gotham Capital achieved an annualized return of approximately 50% before fees, or roughly 30% net of all fees, an extraordinary result sustained over a full decade. To put that in perspective, a hypothetical $1,000 investment in 1985 would have grown to around $40,000 by 1994, before fees.
Gotham Capital closed to outside investors in 1995, after which Greenblatt continued managing the fund primarily for his partners. From its founding through 2006, the fund maintained an average annual return of around 40%.
Greenblatt’s Investment Approach
Greenblatt built much of his early success around “special situations,” investment opportunities arising from corporate spin-offs, mergers, bankruptcies, and restructurings, areas of the market often overlooked or mispriced due to their complexity. His portfolios during this period were often highly concentrated, typically holding just five to eight core positions, reflecting his belief in deep fundamental research over broad diversification.
Gotham Capital Performance Table
| Period | Annualized Return |
|---|---|
| 1985–1994 | ~50% (before fees) / ~30% (net of fees) |
| 1985–2006 | ~40% average annual return |
You Can Be a Stock Market Genius
In 1999, Greenblatt published his first book, You Can Be a Stock Market Genius: Uncover the Secret Hiding Places of Stock Market Profits. The book detailed strategies for exploiting market inefficiencies through special situations, drawing directly on his experience at Gotham Capital, complete with specific historical case studies illustrating his approach.
The Magic Formula
Introducing a Systematic Strategy
Greenblatt’s most widely known contribution to investing came in 2005, with the publication of The Little Book That Beats the Market. In it, he introduced the “Magic Formula,” a systematic, rules-based approach to value investing designed to be simple enough for everyday individual investors to follow.
How the Magic Formula Works
The Magic Formula ranks companies based on two key financial metrics:
- High Return on Capital (ROC), indicating how efficiently a business converts invested money into profit
- High Earnings Yield, indicating how much earnings an investor receives relative to the price paid for the stock
Investors using the strategy typically build a portfolio of 20 to 30 stocks ranked highly on both metrics, generally excluding financial and utility stocks, and holding a minimum market capitalization threshold to avoid overly small or illiquid companies.
Backtested Performance
According to Greenblatt’s own research, the Magic Formula strategy, when backtested, showed annualized returns exceeding the S&P 500 by more than 20 percentage points over the period studied. Multiple academic studies have since examined similar concentrated value strategies, generally finding they can outperform market averages over the long term, though often accompanied by periods of higher volatility and sharper short-term drawdowns.
Magic Formula Criteria Table
| Metric | What It Measures |
|---|---|
| Return on Capital (ROC) | How efficiently a company generates profit from invested capital |
| Earnings Yield | How much earnings investors receive relative to stock price |
| Typical Portfolio Size | 20–30 stocks |
| Excluded Sectors | Financial and utility companies |
Greenblatt later launched the Magic Formula Investing website, giving everyday investors free access to a stock screener built around this same methodology.
Academic Career and Later Ventures
Beyond fund management, Joel Greenblatt taught at Columbia Business School for more than two decades as an adjunct professor of Value and Special Situation Investing, passing his investment philosophy directly to new generations of students.
In 2008, Joel Greenblatt launched Gotham Asset Management, which took over the investment consulting business previously run under Gotham Capital, where he has continued to serve as Managing Principal and Co-Chief Investment Officer. He also co-founded the Value Investors Club, an invite-only community built around sharing in-depth investment research among serious value investors.
Why Joel Greenblatt Remains an Influential Investor
Several factors continue to define his lasting reputation in the investing world:
- A truly exceptional track record, with Gotham Capital’s returns ranking among the best in fund management history
- A rare willingness to teach, sharing his strategies openly through books, teaching, and free tools rather than keeping them proprietary
- The accessibility of the Magic Formula, which distilled complex value investing principles into a system individual investors could actually apply
- Decades of academic contribution, shaping how value investing is taught at one of the world’s leading business schools
FAQs About Joel Greenblatt
1. What is Joel Greenblatt best known for? He is best known for founding Gotham Capital, achieving exceptional investment returns, and creating the “Magic Formula” investing strategy detailed in his book The Little Book That Beats the Market.
2. What returns did Gotham Capital achieve? Between 1985 and 1994, Gotham Capital achieved an annualized return of approximately 50% before fees, one of the strongest sustained track records in hedge fund history.
3. What is the Magic Formula? It’s a systematic value investing strategy that ranks stocks based on high return on capital and high earnings yield, aiming to identify undervalued companies with strong fundamentals.
4. Did Joel Greenblatt teach at a university? Yes, he taught for more than 20 years as an adjunct professor at Columbia Business School, focusing on value and special situation investing.
5. What books has Joel Greenblatt written? His notable books include You Can Be a Stock Market Genius (1999) and The Little Book That Beats the Market (2005), which introduced the Magic Formula.
Conclusion
Joel Greenblatt’s career reflects a rare combination of exceptional investment performance and genuine dedication to teaching others how to invest well. From Gotham Capital’s remarkable early returns to the accessible, systematic approach of the Magic Formula, his work has influenced both professional fund managers and everyday individual investors alike.
Decades after founding Gotham Capital, Joel Greenblatt remains one of value investing’s most respected and widely studied figures.
