By Mill Chart
Last update: Dec 25, 2025
For investors looking for a disciplined, long-term way to build wealth, few strategies have the substance of Peter Lynch's method. The famous manager of the Fidelity Magellan Fund supported a "growth at a reasonable price" (GARP) idea, concentrating on companies with durable, steady growth, good financial condition, and prices that do not overvalue future potential. His strategy, outlined in One Up on Wall Street, stresses fundamental study and a long-term view, avoiding attempts to predict market movements to focus on knowing a business. A main instrument for using this idea is a stock screener that sorts for particular measures Lynch considered important: solid but not extreme profit growth, high earnings ability, acceptable debt, and a good price when growth is considered.

One company that recently appeared from such a filter is ACI Worldwide Inc (NASDAQ:ACIW). The Nebraska-based company is a global supplier of real-time electronic payment software and systems, working with banks, merchants, and billers. For investors who follow Lynch's rules, ACIW offers an interesting example of a business working in the necessary, if sometimes less noticed, financial systems area, precisely the kind of "ordinary" but clear field Lynch usually liked.
A Peter Lynch filter usually looks for companies that show a particular mix of growth, price, and financial soundness. ACI Worldwide seems to match these central needs closely:
Beyond the specific filter measures, a wider look at ACI Worldwide's fundamental picture supports its position as a Lynch-method candidate. According to a full fundamental study, the company receives a total score of 6 out of 10, with clear positives in earnings ability (score of 8) and price (score of 7).
For investors who follow Peter Lynch's idea, ACI Worldwide meets several important points. It works in the necessary payments network, a field with lasting demand sources. Its historical growth in profits is strong and has been reached profitably, as shown by its high ROE and margins. Importantly, when its growth rate is included in the price through the PEG ratio, the stock seems fairly valued, a central rule of the GARP method.
The company's picture, a profitable participant in a needed specialty with a sensible price, fits the Lynch example of a possibly unseen or undervalued chance worth more study. As Lynch suggested, a filter gives a beginning list, not a list to purchase. The following move requires more detailed study into the company's competitive strengths, market directions in electronic payments, and the durability of its growth sources.
Interested in looking at other companies that pass a Peter Lynch-inspired filter? You can locate and adjust the filter for your own study here.
Disclaimer: This article is for information and learning only. It is not meant as investment guidance, a suggestion, or an offer to purchase or sell any security. The study is based on data and a particular investment strategy structure; investors should do their own complete research and think about their personal financial situation and risk comfort before making any investment choices.
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