Many investors pay attention to mid-cap stocks because they have established business models and expansive market opportunities. However, their paths to becoming $100 billion corporations are ripe with competition, ranging from giants with vast resources to agile upstarts eager to disrupt the status quo.

These dynamics can rattle even the most seasoned professionals, which is why we started StockStory - to help you separate the good companies from the bad. Keeping that in mind, here are two mid-cap stocks with massive growth potential and one best left ignored.

One Mid-Cap Stock to Sell:

Lincoln Electric (LECO)

Market Cap: $13.36 billion

Headquartered in Ohio, Lincoln Electric (NASDAQ: LECO) manufactures and sells welding equipment for various industries.

Why Are We Hesitant About LECO?

1. Organic revenue growth fell short of our benchmarks over the past two years and implies it may need to improve its products, pricing, or go-to-market strategy
2. Earnings growth underperformed the sector average over the last two years as its EPS grew by just 2.4% annually
3. Diminishing returns on capital suggest its earlier profit pools are drying up

Lincoln Electric is trading at $244.47 per share, or 23x forward P/E. Read our free research report to see why you should think twice about including LECO in your portfolio.

Two Mid-Cap Stocks to Watch:

Carlisle (CSL)

Market Cap: $13.5 billion

Originally founded as Carlisle Tire and Rubber Company, Carlisle Companies (NYSE: CSL) is a multi-industry product manufacturer focusing on construction materials and weatherproofing technologies.

Why Could CSL Be a Winner?

1. Healthy operating margin of 19.7% shows it’s a well-run company with efficient processes, and its operating leverage amplified its profits over the last five years
2. Share buybacks catapulted its annual earnings per share growth to 25.1%, which outperformed its revenue gains over the last five years
3. Strong free cash flow margin of 15.7% enables it to reinvest or return capital consistently, and its recently improved profitability means it has even more resources to invest or distribute

Carlisle’s stock price of $331.11 implies a valuation ratio of 16.2x forward P/E. Is now the right time to buy? Find out in our full research report, it’s free.

APA Corporation (APA)

Market Cap: $14.85 billion

Operating in three continents with a history stretching back to 1954, APA Corporation (NASDAQ: APA) explores for, develops, and produces crude oil, natural gas, and natural gas liquids in the U.S., Egypt, and the U.K. North Sea.

Why Should You Buy APA?

1. Annual revenue growth of 15.6% over the last five years beat the sector average and underscores the unique value of its offerings
2. Enormous revenue base of $8.15 billion provides significant leverage in supplier negotiations
3. Robust free cash flow margin of 17.9% gives it many options for capital deployment

At $42.12 per share, APA Corporation trades at 9.1x forward P/E. Is now the time to initiate a position? See for yourself in our full research report, it’s free.

Stocks We Like Even 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 meeting near-term momentum — both boxes checked at the same time.

Find out which stocks our AI platform is flagging this week. See this week's Strong Momentum stocks — FREE. Get Our Strong Momentum Stocks for Free HERE.

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.