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3 Cash-Producing Stocks with Warning Signs

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ASYS Cover Image

A company that generates cash isn’t automatically a winner. Some businesses stockpile cash but fail to reinvest wisely, limiting their ability to expand.

Cash flow is valuable, but it’s not everything - StockStory helps you identify the companies that truly put it to work. That said, here are three cash-producing companies to steer clear of and a few better alternatives.

Amtech (ASYS)

Trailing 12-Month Free Cash Flow Margin: 12.3%

Focusing on the silicon carbide and power semiconductor sectors, Amtech Systems (NASDAQ: ASYS) produces the machinery and related chemicals needed for manufacturing semiconductors.

Why Are We Wary of ASYS?

  1. Annual sales declines of 14.9% for the past two years show its products and services struggled to connect with the market during this cycle
  2. Poor expense management has led to an operating margin of -0.7% that is below the industry average
  3. Underwhelming -0.8% return on capital reflects management’s difficulties in finding profitable growth opportunities, and its decreasing returns suggest its historical profit centers are aging

Amtech is trading at $22.48 per share, or 4.3x trailing 12-month price-to-sales. Read our free research report to see why you should think twice about including ASYS in your portfolio.

Knowles (KN)

Trailing 12-Month Free Cash Flow Margin: 14.8%

With roots dating back to 1946 and a focus on components that must perform flawlessly in critical situations, Knowles (NYSE: KN) designs and manufactures specialized electronic components like high-performance capacitors, microphones, and speakers for medical technology, defense, and industrial applications.

Why Do We Steer Clear of KN?

  1. Customers postponed purchases of its products and services this cycle as its revenue declined by 5.2% annually over the last five years
  2. Smaller revenue base of $614.1 million means it hasn’t achieved the economies of scale that some industry juggernauts enjoy
  3. Earnings growth over the last five years fell short of the peer group average as its EPS only increased by 5.2% annually

Knowles’s stock price of $40 implies a valuation ratio of 30.3x forward P/E. If you’re considering KN for your portfolio, see our FREE research report to learn more.

Fortrea (FTRE)

Trailing 12-Month Free Cash Flow Margin: 7%

Spun off from Labcorp in 2023 to focus exclusively on clinical research services, Fortrea (NASDAQ: FTRE) is a contract research organization that helps pharmaceutical, biotech, and medical device companies develop and bring their products to market through clinical trials and support services.

Why Should You Sell FTRE?

  1. Customers postponed purchases of its products and services this cycle as its revenue declined by 3.1% annually over the last four years
  2. Negative returns on capital show management lost money while trying to expand the business, and its shrinking returns suggest its past profit sources are losing steam
  3. Shrinking returns on capital from an already weak position reveal that neither previous nor ongoing investments are yielding the desired results

At $15.93 per share, Fortrea trades at 20.1x forward P/E. To fully understand why you should be careful with FTRE, check out our full research report (it’s free).

Stocks We Like More

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Stocks that made our list in 2020 include now familiar names such as Nvidia (+1,326% between June 2020 and June 2025) as well as under-the-radar businesses like the once-small-cap company Comfort Systems (+782% five-year return). Find your next big winner with StockStory today.

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