3 Mid-Cap Stocks with Open Questions

AMKR Cover Image

Mid-cap stocks often strike the right balance between having proven business models and market opportunities that can support $100 billion corporations. However, they face intense competition from scaled industry giants and can be disrupted by new innovative players vying for a slice of the pie.

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 three mid-cap stocks to avoid and some other investments you should consider instead.

Amkor (AMKR)

Market Cap: $12.35 billion

Operating through a largely Asian facility footprint, Amkor Technologies (NASDAQ: AMKR) provides outsourced packaging and testing for semiconductors.

Why Are We Cautious About AMKR?

  1. High input costs result in an inferior gross margin of 14.4% that must be offset through higher volumes
  2. Performance over the past five years shows its incremental sales were less profitable, as its 1.5% annual earnings per share growth trailed its revenue gains
  3. Lacking free cash flow margin got worse over the last five years as its investment needs accelerated

Amkor’s stock price of $50.10 implies a valuation ratio of 29.3x forward P/E. Read our free research report to see why you should think twice about including AMKR in your portfolio.

Waters Corporation (WAT)

Market Cap: $29.66 billion

Founded in 1958 and pioneering innovations in laboratory analysis for over six decades, Waters (NYSE: WAT) develops and manufactures analytical instruments, software, and consumables for liquid chromatography, mass spectrometry, and thermal analysis used in scientific research and quality testing.

Why Are We Hesitant About WAT?

  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. Expenses have increased as a percentage of revenue over the last two years as its adjusted operating margin fell by 13.7 percentage points
  3. Waning returns on capital imply its previous profit engines are losing steam

Waters Corporation is trading at $302.34 per share, or 21.2x forward P/E. Check out our free in-depth research report to learn more about why WAT doesn’t pass our bar.

Citizens Financial Group (CFG)

Market Cap: $25.25 billion

Tracing its roots back to 1828 as a community-focused institution, Citizens Financial Group (NYSE: CFG) is a regional bank that provides retail and commercial banking services to individuals, small businesses, and large corporations across 14 states.

Why Is CFG Risky?

  1. Sales were flat over the last two years, indicating it’s failed to expand this cycle
  2. Net interest income trends were unexciting over the last five years as its 5% annual growth was below the typical banking firm
  3. Flat earnings per share over the last two years underperformed the sector average

At $58.91 per share, Citizens Financial Group trades at 1x forward P/B. If you’re considering CFG 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 Comfort Systems (+782% five-year return). Find your next big winner with StockStory today.

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