For long-term investors looking for a structured method to choose stocks, the principles established by famous fund manager Peter Lynch provide a useful framework. His method, explained in his book One Up on Wall Street, centers on finding expanding companies that are available at sensible prices, a concept frequently called Growth at a Reasonable Price (GARP). The central thought is to locate businesses with steady, but not extreme, expansion, sound finances, and good earnings, all while making sure the stock price is not too high. A filter using Lynch's rules lately found Dr. Reddy's Laboratories-ADR (NYSE:RDY) as a possible option that deserves more study.

An Introduction to the Peter Lynch Filter
The Peter Lynch investment method is mainly a long-term, buy-and-hold style built on fundamental analysis. It does not try to time the market and instead concentrates on creating a varied collection of companies that an investor can comprehend and trust for many years. The numerical filter based on his guidelines searches for particular signs of quality and reasonable price:
- Steady Expansion: Earnings per share (EPS) should have increased between 15% and 30% each year for the last five years. Increase above 30% is often hard to maintain, while increase below 15% might not fit the "growth" standard.
- Sensible Price: The Price/Earnings to Growth (PEG) ratio should be at or under 1. This measure is important because it modifies the common P/E ratio for the company's expansion rate, aiding in spotting stocks that might be priced low compared to their expansion possibility.
- Financial Soundness: A Debt-to-Equity ratio under 0.6 (Lynch liked under 0.25) and a Current Ratio of at least 1. These checks make sure the company does not have too much debt and can pay its near-term bills.
- Good Earnings: A Return on Equity (ROE) above 15% shows the company is effectively creating profits from shareholder money.
How Dr. Reddy's Laboratories Matches the Lynch Rules
Using the given data, Dr. Reddy's Laboratories, a large worldwide drug company from India, seems to match well with many of Lynch's main investment rules.
Expansion and Price Measures The company shows a solid history of expansion that fits within Lynch's preferred span. Its EPS has increased at a notable average yearly rate of 23.6% over the past five years, clearly above the 15% lowest limit. More significantly, this expansion is combined with a good price when considered with that expansion. The stock's PEG ratio, using this past expansion, is 0.74, which is much lower than Lynch's limit of 1. This indicates the stock could be fairly priced considering its historical earnings growth, a main idea of the GARP method.
Financial Stability and Earnings Lynch stressed investing in companies with firm financial statements. Dr. Reddy's does very well here, having an extremely low Debt-to-Equity ratio of 0.03, which is much more strict than the filter's need and matches Lynch's own liking for very little debt. Its Current Ratio of 1.85 also shows more than enough cash to cover near-term debts.
From an earnings view, the company's ROE of 16.0% exceeds the 15% mark, showing effective use of investor money. This mix of good earnings and a strong financial statement is a sign of financially stable companies fit for long-term collections.
Broad Fundamental Review
An examination of Dr. Reddy's wider fundamental report, available in full here, describes a company with clear strong points and some points to note.
The company receives a very good earnings score, with profit margins and returns on capital that place it high within the tough drug industry. Its financial condition is mostly solid, helped by very low debt amounts, though the report mentions some small worries about cash ratios compared to similar companies and a rise in shares available over a five-year span.
Regarding expansion, while past results have been strong, analyst forecasts point to a possible reduction in earnings expansion soon. This highlights the need for an investor's own study to judge the durability of the company's expansion path, a step Lynch always recommended. The price is seen as mixed; while the stock seems low-priced next to its industry, some basic price measures suggest it is fairly valued or somewhat high in today's market setting.
An Option for More Study
Dr. Reddy's Laboratories offers a useful example of a company that meets a strict, rule-based filter inspired by Peter Lynch. It displays the wanted mix of solid historical expansion, good earnings, a very strong financial statement, and a price that seems fair when expansion is considered. For investors who follow the GARP idea, it is a beginning for more detailed investigation.
For investors wanting to look at other companies that meet the Peter Lynch investment rules, the full filter is ready for more review here.
Disclaimer: This article is for information only and is not financial advice, a suggestion, or an offer to buy or sell any security. Investing has risk, including the chance of losing the original money. You should do your own study and talk with a qualified financial advisor before making any investment choices.



