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100-Bagger Screener

Weekly updated, using Christopher Mayer's criteria from the book '100 Baggers'

📅 Historical Bagger 🧠 Qualitative Criteria Historical Tracker →

Mayer's 8 Criteria

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📚 How This Screener Works

Criteria 8 quantitative Mayer filters applied; all thresholds from the book's text:

ROE >= 20%: High return on capital (Mayer: 20%+ for 4-5 years)
Sales Growth >= 10%: Top-line growth (Mayer: at least 10%)
Gross Margin >= 30%: Moat fingerprint (high, persistent gross margins)
Insider Ownership >= 5%: Owner-operator alignment (Mayer: 10-20% ideal)
Low Debt (D/E <= 1.5): Fortress balance sheet (manageable debt)
EPS Growth >= 10%: Compounding earnings power
Market Cap < $10B: Room to 100x (median starter was $500M)
PEG <= 2: Fair valuation relative to growth (PEG under 1 = major plus)

⚠️ Not investment advice. Quantitative screening only — always do your own research.

100 Baggers Book Cover

100 Baggers

Stocks That Return 100-to-1 and How To Find Them

Christopher Mayer’s 100 Baggers provides a definitive roadmap for uncovering stocks that return $100 for every $1 invested, a feat that turns a $10,000 investment into a life-changing $1 million. The most critical lesson of the book is that massive wealth creation requires you to "buy right and hold on," utilizing a "coffee-can" approach where you leave your best ideas untouched for a decade or more to let compounding work its magic.

Because the average 100-bagger takes roughly 20 to 25 years to reach that milestone, investors must have the iron stomach to ignore short-term market noise, ignore macroeconomic forecasters, and hold through the inevitable—and sometimes terrifying—drawdowns.

Core Principles for Your Screener:

The Twin Engines: The most powerful 100-baggers are fueled by both rapid earnings growth and an expanding valuation multiple.
Starting Small: Filter for smaller companies (ideally under a $1 billion market cap). Smaller bases allow for exponential compounding.
High Return on Capital: Companies must consistently generate a Return on Equity (ROE) of 20% or better and have a massive runway to aggressively reinvest free cash flow at those high rates.
Owner-Operators: Favor CEOs with significant personal wealth (at least 10% to 20%) tied up in the stock, aligning their incentives perfectly with yours.
Economic Moats & Buybacks: Look for durable economic moats (signaled by high, resilient gross profit margins) and prioritize companies that utilize opportunistic share buybacks to shrink share count.

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