3 Cash-Producing Stocks Walking a Fine Line

August 22, 2025 at 00:35 AM EDT

FSTR Cover Image

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.

Cash flow is valuable, but it’s not everything - StockStory helps you identify the companies that truly put it to work. Keeping that in mind, here are three cash-producing companies that don’t make the cut and some better opportunities instead.

L.B. Foster (FSTR)

Trailing 12-Month Free Cash Flow Margin: 4.5%

Founded with a $2,500 loan, L.B. Foster (NASDAQ: FSTR) is a provider of products and services for the transportation and energy infrastructure sectors, including rail products, construction materials, and coating solutions.

Why Do We Avoid FSTR?

Annual sales declines of 1.6% for the past five years show its products and services struggled to connect with the market during this cycle
Low free cash flow margin of 0.3% for the last five years gives it little breathing room, constraining its ability to self-fund growth or return capital to shareholders
Underwhelming 4.5% return on capital reflects management’s difficulties in finding profitable growth opportunities

L.B. Foster is trading at $22.33 per share, or 10.8x forward P/E. To fully understand why you should be careful with FSTR, check out our full research report (it’s free).

Mercury Systems (MRCY)

Trailing 12-Month Free Cash Flow Margin: 13.1%

Founded in 1981, Mercury Systems (NASDAQ: MRCY) specializes in providing processing subsystems and components for primarily defense applications.

Why Do We Think MRCY Will Underperform?

Absence of organic revenue growth over the past two years suggests it may have to lean into acquisitions to drive its expansion
Issuance of new shares over the last five years caused its earnings per share to fall by 22.5% annually while its revenue grew
Diminishing returns on capital from an already low starting point show that neither management’s prior nor current bets are going as planned

Mercury Systems’s stock price of $65.91 implies a valuation ratio of 71.8x forward P/E. Check out our free in-depth research report to learn more about why MRCY doesn’t pass our bar.

U.S. Physical Therapy (USPH)

Trailing 12-Month Free Cash Flow Margin: 8.3%

With a nationwide footprint spanning 671 clinics across 42 states, U.S. Physical Therapy (NYSE: USPH) operates a network of outpatient physical therapy clinics and provides industrial injury prevention services to employers across the United States.

Why Are We Cautious About USPH?

Subscale operations are evident in its revenue base of $729.6 million, meaning it has fewer distribution channels than its larger rivals
9 percentage point decline in its free cash flow margin over the last five years reflects the company’s increased investments to defend its market position
Waning returns on capital imply its previous profit engines are losing steam

At $84.47 per share, U.S. Physical Therapy trades at 32.6x forward P/E. Dive into our free research report to see why there are better opportunities than USPH.

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3 Cash-Producing Stocks Walking a Fine Line

L.B. Foster (FSTR)

Mercury Systems (MRCY)

U.S. Physical Therapy (USPH)

High-Quality Stocks for All Market Conditions

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