While profitability is essential, it doesn’t guarantee long-term success. Some companies that rest on their margins will lose ground as competition intensifies — as Jeff Bezos said, “Your margin is my opportunity”.

Profits are valuable, but they’re not everything. At StockStory, we help you identify the companies that have real staying power. Keeping that in mind, here is one profitable company that leverages its financial strength to beat the competition and two that may face some trouble.

Two Stocks to Sell:

Sotera Health Company (SHC)

Trailing 12-Month GAAP Operating Margin: 32%

With a critical role in ensuring the safety of millions of patients worldwide, Sotera Health (NASDAQGS:SHC) provides sterilization services, lab testing, and advisory services to ensure medical devices, pharmaceuticals, and food products are safe for use.

Why Does SHC Fall Short?

1. Absence of organic revenue growth over the past two years suggests it may have to lean into acquisitions to drive its expansion
2. Subscale operations are evident in its revenue base of $1.19 billion, meaning it has fewer distribution channels than its larger rivals
3. Free cash flow margin shrank by 8.4 percentage points over the last five years, suggesting the company is consuming more capital to stay competitive

Sotera Health Company’s stock price of $17.94 implies a valuation ratio of 17.8x forward P/E. Check out our free in-depth research report to learn more about why SHC doesn’t pass our bar.

Atmus Filtration Technologies (ATMU)

Trailing 12-Month GAAP Operating Margin: 17%

Spun out of Cummins in 2023 after 65 years as part of the engine maker, Atmus Filtration Technologies (NYSE: ATMU) manufactures filters for trucks, construction equipment, and agriculture machinery to reduce emissions and protect engines.

Why Is ATMU Not Exciting?

1. Sales trends were unexciting over the last two years as its 5.6% annual growth was below the typical industrials company
2. Gross margin of 26.3% reflects its high production costs
3. Free cash flow margin didn’t grow over the last five years

At $49.72 per share, Atmus Filtration Technologies trades at 16.5x forward P/E. If you’re considering ATMU for your portfolio, see our FREE research report to learn more.

One Stock to Buy:

TransDigm (TDG)

Trailing 12-Month GAAP Operating Margin: 46.5%

Supplying parts for nearly all aircraft currently in service, TransDigm (NYSE: TDG) develops and manufactures components and systems for military and commercial aviation.

Why Are We Bullish on TDG?

1. Core business can prosper without any help from acquisitions as its organic revenue growth averaged 9.5% over the past two years
2. Performance over the past five years shows its incremental sales were extremely profitable, as its annual earnings per share growth of 33.8% outpaced its revenue gains
3. Impressive free cash flow profitability enables the company to fund new investments or reward investors with share buybacks/dividends, and its recently improved profitability means it has even more resources to invest or distribute

TransDigm is trading at $1,342 per share, or 29.9x forward P/E. Is now a good time to buy? See for yourself in our in-depth research report, it’s free.

High-Quality Stocks for All Market Conditions

WHILE YOU’RE HERE: Top 9 Market-Beating Stocks. The best stocks don’t just beat the market once. They do it again. And again. Robust revenue growth, rising free cash flow, returns on capital that leave their competition in the dust. The market has already rewarded these businesses.

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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-micro-cap company Tecnoglass (+1,754% five-year return). Find your next big winner with StockStory today.