
While strong cash flow is a key indicator of stability, it doesn’t always translate to superior returns. Some cash-heavy businesses struggle with inefficient spending, slowing demand, or weak competitive positioning.
Luckily for you, we built StockStory to help you separate the good from the bad. Keeping that in mind, here is one cash-producing company that excels at turning cash into shareholder value and two best left off your watchlist.
Trailing 12-Month Free Cash Flow Margin: 9.3%
The result of a spinoff from Sanken in Japan, Allegro MicroSystems (NASDAQ:ALGM) is a designer of power management chips and distance sensors used in electric vehicles and data centers.
Why Are We Wary of ALGM?
At $42.49 per share, Allegro MicroSystems trades at 37.6x forward P/E. If you’re considering ALGM for your portfolio, see our FREE research report to learn more.
Trailing 12-Month Free Cash Flow Margin: 3.3%
Once known as JDS Uniphase before its 2015 rebranding, Viavi Solutions (NASDAQ:VIAV) provides testing, monitoring and assurance solutions for telecommunications, cloud, enterprise, military, and other critical networks and infrastructure.
Why Are We Hesitant About VIAV?
Viavi Solutions is trading at $35.78 per share, or 26.2x forward P/E. Read our free research report to see why you should think twice about including VIAV in your portfolio.
Trailing 12-Month Free Cash Flow Margin: 21.5%
With roots dating back to 1891 and a portfolio that includes the blockbuster cancer immunotherapy Keytruda, Merck (NYSE:MRK) develops and sells prescription medicines, vaccines, and animal health products across oncology, infectious diseases, cardiovascular, and other therapeutic areas.
Why Are We Fans of MRK?
Merck’s stock price of $129.71 implies a valuation ratio of 21.1x forward P/E. Is now the right time to buy? Find out in our full research report, it’s free.
ALSO WORTH WATCHING: Top 5 Momentum Stocks. The best time to own a great stock is when the market is finally noticing it. These aren’t just high-quality businesses. Something is happening with them right now. Elite fundamentals meet near-term momentum — both boxes checked at the same time.
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Stocks that made our list in 2020 include now familiar names such as Nvidia (+1,460% between June 2020 and June 2025) as well as under-the-radar businesses like the once-small-cap company Comfort Systems (+1,154% between June 2020 and June 2025). Find your next big winner with StockStory today.