Not all profitable companies are built to last - some rely on outdated models or unsustainable advantages.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.

Not all profitable companies are created equal, and that’s why we built StockStory - to help you find the ones that truly shine bright. That said, here are three profitable companies to steer clear of and a few better alternatives.

FormFactor (FORM)

Trailing 12-Month GAAP Operating Margin: 12.9%

With customers across the foundry and fabless markets, FormFactor (NASDAQ: FORM) is a US-based provider of test and measurement technologies for semiconductors.

Why Do We Think Twice About FORM?

1. Annual revenue growth of 3.8% over the last five years was below our standards for the semiconductor sector
2. High input costs result in an inferior gross margin of 42.8% that must be offset through higher volumes
3. Ability to fund investments or reward shareholders with increased buybacks or dividends is restricted by its weak free cash flow margin of 8.4% for the last two years

FormFactor’s stock price of $131.78 implies a valuation ratio of 37.3x forward P/E. Dive into our free research report to see why there are better opportunities than FORM.

American Airlines (AAL)

Trailing 12-Month GAAP Operating Margin: 1.7%

One of the ‘Big Four’ airlines in the US, American Airlines (NASDAQ: AAL) is a major global air carrier that serves both business and leisure travelers through its domestic and international flights.

Why Are We Out on AAL?

1. Performance surrounding its revenue passenger miles has lagged its peers
2. Waning returns on capital from an already weak starting point displays the inefficacy of management’s past and current investment decisions
3. High net-debt-to-EBITDA ratio of 9× could force the company to raise capital on unfavorable terms if market conditions deteriorate

At $15.07 per share, American Airlines trades at 11.1x forward P/E. If you’re considering AAL for your portfolio, see our FREE research report to learn more.

Main Street Capital (MAIN)

Trailing 12-Month GAAP Operating Margin: 63.5%

With a focus on building long-term partnerships rather than quick transactions, Main Street Capital (NYSE: MAIN) is a business development company that provides long-term debt and equity capital to lower middle market and middle market companies.

Why Is MAIN Not Exciting?

1. Sales trends were unexciting over the last two years as its 5.5% annual growth was below the typical financials company
2. Earnings per share fell by 2.7% annually over the last two years while its revenue grew, showing its incremental sales were much less profitable
3. Annual tangible book value per share growth of 6.7% over the last two years was below our standards for the financials sector

Main Street Capital is trading at $59.22 per share, or 15.3x forward P/E. Check out our free in-depth research report to learn more about why MAIN doesn’t pass our bar.

Stocks We Like More

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.