3 Profitable Stocks with Warning Signs

Not all profitable companies are built to last - some rely on outdated models or unsustainable advantages. Just because a business is in the green today doesn’t mean it will thrive tomorrow.

Profits are valuable, but they’re not everything. At StockStory, we help you identify the companies that have real staying power. That said, here are three profitable companies to avoid and some better opportunities instead.

Semtech (SMTC)

Trailing 12-Month GAAP Operating Margin: 7%

A public company since the late 1960s, Semtech (NASDAQ:SMTC) is a provider of analog and mixed-signal semiconductors used for Internet of Things systems and cloud connectivity.

Why Is SMTC Risky?

1. Growth came at the expense of profits over the last five years as its operating margin losses have increased
2. Investment activity picked up over the last five years, pressuring its weak free cash flow margin of 9.3%
3. Negative returns on capital show that some of its growth strategies have backfired, and its falling returns suggest its earlier profit pools are drying up

Semtech is trading at $90.37 per share, or 45.6x forward P/E. Read our free research report to see why you should think twice about including SMTC in your portfolio.

Penguin Solutions (PENG)

Trailing 12-Month GAAP Operating Margin: 4.4%

Based in the US, Penguin Solutions (NASDAQ:PENG) is a diversified semiconductor company offering memory, digital, and LED products.

Why Does PENG Fall Short?

1. 3.7% annual revenue growth over the last five years was slower than its semiconductor peers
2. Gross margin of 28.8% reflects its high production costs
3. Lacking free cash flow generation means it has few chances to reinvest for growth, repurchase shares, or distribute capital

At $19.32 per share, Penguin Solutions trades at 9x forward P/E. Dive into our free research report to see why there are better opportunities than PENG.

America's Car-Mart (CRMT)

Trailing 12-Month GAAP Operating Margin: 4.1%

With a strong presence in the Southern and Central US, America’s Car-Mart (NASDAQ:CRMT) sells used cars to budget-conscious consumers.

Why Should You Dump CRMT?

1. Weak same-store sales trends over the past two years suggest there may be few opportunities in its core markets to open new locations
2. Revenue growth over the past three years was nullified by the company’s new share issuances as its earnings per share fell by 74.7% annually

America's Car-Mart’s stock price of $20.47 implies a valuation ratio of 56.9x forward P/E. If you’re considering CRMT for your portfolio, see our FREE research report to learn more.

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 Exlservice (+354% five-year return). Find your next big winner with StockStory today.