The Little Book That Still Beats the Market Review: Greenblatt's Magic Formula Made Simple

The Short Book That Greenblatt Turned Into a $1.2 Billion Fund

Joel Greenblatt's The Little Book That Still Beats the Market (first published 2006, expanded 2010) is one of the most accessible investment books published in the 21st century. In ~200 pages, Greenblatt lays out his "Magic Formula" — a quantitative stock-selection system based on two metrics: return on capital + earnings yield. Simple, testable, and backtested against 20+ years of market data.

Short answer: Mandatory reading for investors interested in value investing or quantitative stock selection. At ~200 pages, it's a focused read (weekend afternoon). Greenblatt's formula has proven effective over 20+ years. Even if you don't implement the formula, the mental frameworks are valuable for any stock selection approach.

Specs

Author: Joel Greenblatt (founder of Gotham Capital, Columbia professor) First published: 2006 Expanded edition: 2010 Pages: ~208

The Magic Formula

Greenblatt's two-metric stock selection:

1. Return on Capital (ROIC) = Operating income / (Net working capital + Net fixed assets)

   • Measures how well a business generates returns on its invested capital
   • Higher = better business

2. Earnings Yield = Earnings before interest and taxes (EBIT) / Enterprise value

   • Measures how cheaply the business is valued
   • Higher = better price

The rule: Rank all stocks by both metrics. Buy the top-ranked across both — high-return businesses trading at low valuations.

Why This Framework Works

Quantitative discipline: Removes emotion from selection. Formula says buy; you buy.

Value + Quality: Combines Graham's "cheap" with Buffett's "quality businesses at fair prices."

Back-testing evidence: Greenblatt backtested the formula across 20+ years. Average annual return: ~30%. Dramatically outperformed S&P 500.

Out-of-sample validation: Since publication, the formula has continued working, though returns have moderated (high-30s% historically, mid-20s% in recent years).

Limitations Greenblatt Acknowledges

• Requires 20-30 stock portfolio (not 5-10)
• Requires 1-year hold minimum (not day trading)
• Drawdowns can be substantial (-40%+ in crisis years)
• Formula works long-term but can underperform for 3-5 years
• Most investors can't stomach the underperformance periods

The "can't stomach it" point is the key insight: the formula works; most investors don't.

The Four Principles (Greenblatt's Summary)

1. Figure out what a business is worth (intrinsic value estimation)
2. Buy it for less than that (margin of safety)
3. Do more of what works (continue buying winners)
4. Do less of what doesn't (sell non-performers)

These are Warren Buffett / Benjamin Graham principles simplified.

Who Should Read This

Strong fit:

• Value investors wanting quantitative framework
• Readers intimidated by Graham's 600-page Intelligent Investor
• DIY investors wanting systematic approach
• Retirement-plan optimizers
• Finance students

Less ideal:

• Passive index fund investors (opposing philosophy)
• Day traders (different time horizon)
• Those seeking specific 2026 stock picks

What Greenblatt's Own Fund Did

Joel Greenblatt founded Gotham Capital, which grew to $1.2B before his retirement. His track record demonstrates the formula (or similar quantitative approaches) works in practice, not just in backtests.

Pros and Cons

Pros: Simple two-metric formula that's testable and practical, short 200-page read, strong 20+ year backtest, continues working post-publication, accessible to non-finance readers, Greenblatt is a proven practitioner, "common sense" foundation

Cons: Requires discipline to execute during drawdowns, 20-30 stock portfolio may feel overwhelming, doesn't cover specific industry nuances, formula has moderated in recent years, assumes you can execute systematically

FAQ

Can I implement this with index funds? No — formula requires individual stock selection. However, "value" index funds (like Vanguard VTV) capture some of the same spirit.

What about international stocks? Greenblatt's formula works internationally. Same principles apply to developed-market stocks globally.

Does this work in 2026? Yes, though returns have moderated. Core principles remain valid.

Can I automate this? Yes — websites like MagicFormulaInvesting.com provide pre-filtered lists.

How often should I trade? Annual rebalancing at minimum. Greenblatt recommends quarterly buys spread across the year.

What tax implications? Short-term capital gains apply for holdings under 1 year. Greenblatt discusses this explicitly.

Should I read Graham first? No, start here. Graham is more comprehensive but also longer. Greenblatt gives you 80% of Graham's insights in 20% of the pages.

Bottom Line

The Little Book That Still Beats the Market is the most accessible entry into quantitative value investing. At 200 pages, it's a weekend read with decades of potential investment implications.

Greenblatt's formula doesn't guarantee outperformance — but it provides a disciplined approach to systematic value investing that most "gut feel" investors lack.

Our rating: 4.2/5 — Docked for acknowledged drawdown risk requiring strong investor discipline. Within accessible investing literature, excellent.