INVESTOR LETTER #107
PEG Ratio
The PEG (Price/Earnings to Growth) Ratio improves upon the traditional P/E ratio by considering a company's future earnings growth. A stock with a high P/E may not actually be expensive if its earnings are expected to grow rapidly. Likewise, a low P/E stock may not be cheap if its business is barely growing. The PEG ratio helps investors balance valuation with growth instead of looking at valuation alone.
INVESTOR NOTE
A business owner thinks in decades. A speculator thinks in minutes.
Two Shops, Two Futures
Imagine two bakery shops are for sale, and both cost ₹50 lakh. At first glance, they seem equally priced. But after talking to the owners, you learn that the first bakery has been growing steadily every year and plans to open more branches, while the second has had the same number of customers for years with little room to grow. Would you value both businesses the same? Probably not. Future growth changes what a business is worth.
Why P/E Doesn't Tell the Whole Story
The P/E ratio only tells you how much you're paying for today's earnings. It says nothing about tomorrow. Two companies with the same P/E can have completely different futures if one is growing much faster than the other.
What Is the PEG Ratio?
The PEG ratio combines valuation with earnings growth. Instead of looking only at how expensive a stock appears today, it asks whether that price makes sense considering how quickly the company's profits are expected to grow.
Growth Deserves a Higher Price
Imagine buying two fruit trees. One produces the same number of fruits every year, while the other produces more fruit each season as it matures. Even if the second tree costs a little more today, it may actually be the better bargain because of its future harvest.
A High P/E Isn't Always Bad
Many beginners immediately avoid companies with high P/E ratios. But some outstanding businesses deserve higher valuations because they are growing rapidly and consistently. Paying a premium for exceptional growth can sometimes be a smart decision.
Cheap Stocks Can Be Value Traps
A company with a very low P/E ratio may seem attractive at first. But if its profits are shrinking every year or its industry is in decline, the stock may deserve that low valuation. Looking only at the P/E ratio without considering growth can lead to expensive mistakes.
Growth Estimates Are Only Estimates
One important limitation of the PEG ratio is that it depends on expected future growth. Nobody knows exactly how fast a company will grow over the next five or ten years. If the growth estimates turn out to be too optimistic, the PEG ratio becomes much less useful.
Quality Matters More Than Speed
Not all growth creates value. A company growing profits at 25% by taking huge risks or borrowing heavily isn't necessarily better than one growing steadily at 12% with strong cash flows and excellent returns on capital. Always study the quality of growth, not just the growth rate.
Never Use PEG by Itself
The PEG ratio is a useful shortcut, but it should never replace business analysis. Competitive advantages, management quality, balance sheet strength, free cash flow, and capital allocation remain far more important than any single valuation ratio.
The Best Comparison Tool
The PEG ratio works best when comparing companies in the same industry with similar business models. Comparing the PEG ratio of a fast-growing software company with that of a mature utility company usually doesn't provide meaningful insights because their growth opportunities are completely different.
Think Beyond the Formula
Many investors memorize the PEG ratio but forget what it actually represents. The goal isn't to find the lowest PEG. The goal is to understand whether the market's expectations for future growth are reasonable compared to the price you're paying today.
One Question Before Buying a Growth Stock
Whenever you see a company trading at a high P/E ratio, don't immediately assume it's expensive. Instead ask yourself: 'Is this business likely to grow fast enough over the coming years to justify today's valuation?' That's the question the PEG ratio is trying to help you answer.
INVESTOR PRINCIPLE