TL;DR: Peter Lynch's GARP (Growth At a Reasonable Price) combines growth and value investing through the PEG ratio: price/earnings divided by earnings growth. A PEG below 1.0 means you're paying less than the growth rate justifies. Lynch's ideal: 15-25% annual earnings growth with PEG below 1. Buy stocks in boring sectors that analysts undervalue.
Peter Lynch's GARP strategy seeks the sweet spot between growth and value investing. The key metric is the PEG ratio: P/E ratio divided by earnings growth rate. A PEG < 1.0 indicates the stock is undervalued relative to its growth. Lynch found 10-baggers (stocks that returned 10x) by identifying growing companies before Wall Street discovered them. He favored boring businesses with sustainable competitive advantages growing earnings 15-25% annually while trading at P/E ratios of 10-20.
Core principles
- 1. Target PEG ratio < 1.0 (lower is better)
- 2. Prefer earnings growth of 15-25% annually
- 3. Avoid overpaying even for great growth
- 4. Look for underappreciated companies in boring industries
- 01 PEG ratio < 1.0
- 02 Earnings growth 15-25% annually
- 03 P/E ratio reasonable for the growth rate
- 04 Strong fundamentals and competitive position
- 01 PEG ratio > 2.0 (overvalued)
- 02 Growth slows below 10% annually
- 03 Story changes (competitive threats)
Risks to respect
- Diversify across 10-15 GARP stocks
- Monitor earnings reports quarterly
- Sell partial positions as valuation expands
Risk management
- Diversify across 10-15 GARP stocks
- Monitor earnings reports quarterly
- Sell partial positions as valuation expands
Step-by- step plan
- 1
Master the PEG Ratio Calculation
Start by learning to calculate PEG ratios correctly. Find the current P/E ratio (stock price divided by earnings per share). Then find the expected earnings growth rate for the next 3-5 years. Divide P/E by growth rate. Practice with 10 stocks you know until this becomes second nature.
- 2
Screen for GARP Candidates
Use a stock screener to find companies with: earnings growth rate 15-25% annually, P/E ratio between 10-20, PEG ratio below 1.0, and positive earnings for at least 5 consecutive years. This creates your initial watchlist of 20-30 potential investments.
- 3
Apply the Lynch 'Know What You Own' Test
For each candidate, ask: Can I explain this business in 30 seconds? Do I understand how they make money? What's their competitive advantage? Lynch spent hours visiting stores, talking to customers, and using products. You should be able to tell the 'story' of each company simply.
- 4
Look for Hidden Ten-Bagger Characteristics
Screen for Lynch's favorite ten-bagger traits: boring or unpleasant industry (trash, funeral homes, pest control), company name sounds dull, Wall Street ignores it, insiders are buying, company is buying back shares, and it's a spin-off from a larger company.
- 5
Monitor Quarterly and Rebalance
Track each holding's PEG ratio quarterly. When PEG exceeds 2.0, consider selling half. When a stock delivers 100%+ gains but PEG remains below 1.0, let it run. Sell immediately if growth rate drops below 10% or if the story fundamentally changes.
In detail
The PEG Ratio: Growth Investing's Most Powerful Tool
Peter Lynch revolutionized growth investing with one simple formula: the PEG ratio. Take a stock's P/E ratio and divide it by its earnings growth rate. A stock with a P/E of 20 and 20% growth has a PEG of 1.0. A P/E of 20 with 40% growth has a PEG of 0.5—now that's interesting. The beauty of PEG is that it levels the playing field between growth and value stocks. A 'cheap' stock with P/E of 8 might actually be expensive if it's only growing at 4% (PEG = 2.0). Meanwhile, a 'pricey' stock with P/E of 30 could be a bargain if it's growing at 45% (PEG = 0.67). Lynch considered a PEG below 1.0 as potentially undervalued and above 2.0 as overvalued. The sweet spot? Companies growing earnings 15-25% annually with P/E ratios of 10-20, creating PEG ratios between 0.5 and 1.0. These were the hunting grounds where Lynch found his legendary 10-baggers.
The Ten-Bagger Concept: How Lynch Made Investors Rich
Peter Lynch coined the term 'ten-bagger'—a stock that returns 10 times your money. During his 13-year tenure at Fidelity's Magellan Fund, he found dozens of them. His secret? Looking for growth in places Wall Street ignored. Dunkin' Donuts was a classic Lynch ten-bagger. While analysts chased tech stocks, Lynch noticed the coffee shop chain expanding across New England with consistent same-store sales growth. It was boring, understandable, and trading at a reasonable PEG. The stock went up 20-fold. The key insight: ten-baggers usually start as small, overlooked companies in mundane industries. By the time Wall Street analysts cover a stock, much of the easy gains are gone. Lynch advocated for individual investors to use their 'edge'—noticing which stores are always crowded, which products your friends love, which services are expanding in your neighborhood—before the professionals catch on.
The Danger Zone: When Growth Becomes a Trap
For every ten-bagger, there are dozens of growth traps—companies where investors overpaid for growth that never materialized. Lynch warned repeatedly about the 'whisper stocks' with exciting stories but PEG ratios of 3.0, 4.0, or higher. Consider a company trading at P/E of 60 with 20% expected growth (PEG = 3.0). For this investment to merely match the market over 5 years, the company must grow earnings 20% annually AND maintain that elevated P/E ratio. If growth slows to 15%, or the P/E compresses to 25 (still generous), the stock could fall 50% even as earnings rise. Lynch called this 'paying for perfection.' When you buy at high PEG ratios, everything must go right. When you buy at low PEG ratios, you have margin for error. One disappointment, and high-PEG stocks crater while low-PEG stocks often barely notice.
Magellan Fund: The Greatest Track Record in History
From 1977 to 1990, Peter Lynch transformed Fidelity Magellan from an $18 million fund into a $14 billion juggernaut, delivering 29.2% annual returns—nearly doubling the S&P 500's performance. A $10,000 investment when Lynch started became $280,000 when he retired. Lynch's GARP approach meant he owned both 'growth' and 'value' stocks—he rejected the artificial distinction. He held beaten-down Chrysler (classic value) alongside fast-growing Taco Bell (classic growth). What united them was reasonable price relative to their earning power. Perhaps most remarkably, Lynch did this without computer screens or algorithmic trading. His research was fundamentally simple: visit stores, read annual reports, calculate PEG ratios, and buy what he understood at prices that made sense. He proved that individual investors could beat Wall Street using discipline and common sense.
Key takeaways
- The PEG ratio reveals whether you're paying fairly for growth—divide the price-to-earnings ratio by the growth rate. Below 1.0 signals potential value, above 2.0 signals danger.
- Lynch's ten-baggers typically came from boring, ignored industries—not exciting tech stocks. Individual investors have an edge spotting local trends before Wall Street catches on.
- Paying for perfection (high PEG ratios) leaves no room for error. One earnings miss crushes the stock. Low PEG ratios provide margin of safety even when things don't go perfectly.
- Lynch's 29% annual returns at Magellan came from a simple process: calculate PEG ratios, understand the business, buy at reasonable prices, and hold until the story changes.
Frequently asked questions
How do I calculate the PEG ratio myself? +
PEG = P/E ratio ÷ expected earnings growth (%). Example: P/E of 20 and earnings growth of 25% per year gives PEG = 20 ÷ 25 = 0.8. This is attractive. A P/E of 30 with 15% growth gives PEG = 2.0 — too expensive. Use expected growth for the next 3-5 years, not historical growth.
What's the difference between GARP and pure growth investing? +
Pure growth investors pay premium valuations (PEG 3-5+) for the best growing companies. GARP requires that growth justifies the price (PEG < 1-1.5). Lynch said: 'A wonderful company at a ridiculous price is not a bargain.' GARP is more conservative and offers more protection in falling markets.
How long do I hold a GARP stock? +
Lynch held stocks for an average of 2-5 years. Sell signals: PEG rises above 2.0 from price appreciation (the market has priced in the growth), earnings growth structurally slows below 10%, or the 'story' changes (new competitors, market shift). Take partial profit on strong rises to rebalance.
Historical context
Lynch's Magellan Fund: 29% annual returns (1977-1990) using GARP
- Understanding of growth metrics
- Ability to calculate PEG ratio
- Stock screener with PEG ratio
- Earnings reports
- Growth analysis