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The Lynch Screener

"Invest in what you know."

— Peter Lynch

Peter Lynch's Philosophy

Peter Lynch managed the Fidelity Magellan Fund from 1977 to 1990, averaging 29% annual returns. He turned $18 million into $14 billion by finding growth companies before Wall Street noticed them.

Key Principles

• Invest in What You Know: Use your everyday experiences to find opportunities
• Local Edge: Small companies in your area may be tomorrow's giants
• Growth at Reasonable Price (GARP): Don't overpay even for growth
• Story Investing: Understand the company's narrative
• Tenbaggers: Look for companies that can grow 10x

💡 Did You Know?

Lynch discovered Dunkin' Donuts by eating their donuts. He found The Body Shop from his daughters' enthusiasm. He called this "investing in what you know."

Screener Criteria

Earnings Growth

> 20%

5-year average

PEG Ratio

< 1.5

Price/Earnings to Growth

Debt/Equity

< 0.5

Low leverage

Insider Ownership

> 5%

Management alignment

Market Cap

< $10B

Smaller companies

📊 Analyze Any Stock

Enter a ticker symbol to see how it measures up against Lynch's criteria

Try: CMG, LULU, AMD, NVDA, or any US stock ticker

Company Name

TICKER

Earnings Growth

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Target: > 20%

PEG Ratio

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Target: < 1.5

Debt-to-Equity

--

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Target: < 0.5

Insider Ownership

--

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Target: > 5%

Market Cap

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Target: < $10B

Lynch Score

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Enter a ticker to see results

Where these numbers come from: a public price feed refreshed after each weekday's market close and saved into the site, not fetched live while you read -- so check the dated line above before repeating any figure here. If that file cannot load, the same screen runs on invented example values so the method can still be practised. Either way this is teaching equipment rather than a quote: confirm against your broker or the company's own filings before acting on it.

Example Results

Companies matching Lynch's criteria (for educational purposes only)

📚 Educational Data Updated: Delayed data for learning purposes

Company	Ticker	Growth	PEG	Debt/Eq	Story
Chipotle Fast casual dining	CMG	24%	1.3	0.0	Quality food, expansion
Lululemon Athletic apparel	LULU	28%	1.4	0.1	Athleisure leader
AMD Semiconductors	AMD	32%	2.1	0.05	AI chip demand
Roblox Gaming platform	RBLX	35%	1.2	0.0	Metaverse growth

Meets Criteria

Below Threshold

Strong Compelling growth story

← Back to Screeners Learn More About Lynch

Deep Dive: Understanding Lynch's Criteria

📈 Growth at Reasonable Price (GARP)

Lynch's signature approach balances growth potential with valuation discipline:

• The PEG Ratio: Lynch popularized PEG (P/E divided by growth rate)
• Sweet Spot: PEG under 1.5 means you're not overpaying for growth
• Why It Works: High growth is great, but not at any price
• Example: A stock with 20% growth and P/E of 25 has PEG of 1.25
• Avoid: Hot stocks with PEG ratios above 2-3

🚀 The Tenbagger Concept

Lynch coined "tenbagger" for stocks that grow 10x your investment:

• Small is Beautiful: Tenbaggers often start as small companies
• Timeframe: Usually takes 5-10 years for a company to 10x
• Characteristics: Growing markets, expanding locations, loyal customers
• Patience Required: You need to hold through volatility
• Home Runs: Magellan Fund had hundreds of tenbaggers

🧠 Invest in What You Know

Lynch believed everyday experiences give retail investors an edge:

• Your Shopping: Notice which stores are always busy
• Your Job: Industry insights others don't have
• Your Hobbies: Trends in gaming, fitness, or tech
• Your Kids: What products are they obsessed with?
• Key Rule: Only invest when you understand the business