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. That said, here is one mid-cap stock with huge upside potential and two that could be down big.

Two Mid-Cap Stocks to Sell:

Lattice Semiconductor (LSCC)

Market Cap: $12.88 billion

A global leader in its category, Lattice Semiconductor (NASDAQ: LSCC) is a semiconductor designer specializing in customer-programmable chips that enhance CPU performance for intensive tasks such as machine learning.

Why Are We Hesitant About LSCC?

1. Annual sales declines of 15.7% for the past two years show its products and services struggled to connect with the market during this cycle
2. Efficiency has decreased over the last five years as its operating margin fell by 17.4 percentage points
3. Free cash flow margin dropped by 5.3 percentage points over the last five years, implying the company became more capital intensive as competition picked up

Lattice Semiconductor is trading at $94.83 per share, or 59.1x forward P/E. Check out our free in-depth research report to learn more about why LSCC doesn’t pass our bar.

Trimble (TRMB)

Market Cap: $15.33 billion

Playing a role in the construction of the Paris Grand, Trimble (NASDAQ: TRMB) offers geospatial devices and technology to the agriculture, construction, transportation, and logistics industries.

Why Should You Dump TRMB?

1. Sales tumbled by 2.8% annually over the last two years, showing market trends are working against its favor during this cycle
2. Core business is underperforming as its organic revenue has disappointed over the past two years, suggesting it might need acquisitions to stimulate growth
3. Capital intensity has ramped up over the last five years as its free cash flow margin decreased by 9.2 percentage points

Trimble’s stock price of $65.53 implies a valuation ratio of 18.9x forward P/E. Read our free research report to see why you should think twice about including TRMB in your portfolio.

One Mid-Cap Stock to Buy:

Samsara (IOT)

Market Cap: $19.56 billion

From sensors on vehicles to AI-powered cameras that help prevent accidents, Samsara (NYSE: IOT) is a cloud-based Internet of Things platform that helps businesses improve the safety, efficiency, and sustainability of their physical operations.

Why Is IOT a Good Business?

1. Ability to secure long-term commitments with customers is evident in its 29.8% ARR growth over the last year
2. Forecasted revenue growth of 21.8% for the next 12 months indicates its momentum over the last two years is sustainable
3. Fast payback periods on sales and marketing expenses allow the company to invest heavily and onboard many customers concurrently

At $33.56 per share, Samsara trades at 10x forward price-to-sales. Is now a good time to buy? Find out in our full research report, it’s free.

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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 Kadant (+351% five-year return). Find your next big winner with StockStory today.