Growth is oxygen. But when it evaporates, the consequences can be severe - ask anyone who bought Cisco in the Dot-Com Bubble or newer investors who lived through the 2020 to 2022 COVID cycle.

Luckily for you, our job at StockStory is to help you avoid short-term fads by pointing you toward high-quality businesses that can generate sustainable long-term growth. That said, here is one growth stock where the best is yet to come and two that could be down big.

Two Growth Stocks to Sell:

Byrna (BYRN)

One-Year Revenue Growth: +51%

Providing civilians with tools to disable, disarm, and deter would-be assailants, Byrna (NASDAQ: BYRN) is a provider of non-lethal weapons.

Why Are We Hesitant About BYRN?

1. Historical operating margin losses point to an inefficient cost structure
2. Cash-burning tendencies make us wonder if it can sustainably generate shareholder value
3. Short cash runway increases the probability of a capital raise that dilutes existing shareholders

Byrna’s stock price of $17.30 implies a valuation ratio of 18.3x forward EV-to-EBITDA. Dive into our free research report to see why there are better opportunities than BYRN.

UFP Technologies (UFPT)

One-Year Revenue Growth: +29.5%

With expertise dating back to 1963 in specialized materials and precision manufacturing, UFP Technologies (NASDAQ: UFPT) designs and manufactures custom solutions for medical devices, sterile packaging, and other highly engineered products for healthcare and industrial applications.

Why Are We Wary of UFPT?

1. Modest revenue base of $598 million gives it less fixed cost leverage and fewer distribution channels than larger companies
2. Estimated sales growth of 4.6% for the next 12 months implies demand will slow from its two-year trend

At $223.43 per share, UFP Technologies trades at 22x forward P/E. Read our free research report to see why you should think twice about including UFPT in your portfolio.

One Growth Stock to Watch:

Marvell Technology (MRVL)

One-Year Revenue Growth: +45%

Moving away from a low margin storage device management chips in one of the biggest semiconductor business model pivots of the past decade, Marvell Technology (NASDAQ: MRVL) is a fabless designer of special purpose data processing and networking chips used by data centers, communications carriers, enterprises, and autos.

Why Could MRVL Be a Winner?

1. Annual revenue growth of 22% over the last five years was superb and indicates its market share increased during this cycle
2. Operating margin expanded by 24.6 percentage points over the last five years as it scaled and became more efficient
3. Free cash flow margin increased by 8 percentage points over the last five years, giving the company more capital to invest or return to shareholders

Marvell Technology is trading at $89.59 per share, or 25.3x forward P/E. Is now the right time to buy? See for yourself in our in-depth research report, it’s free for active Edge members.

Stocks We Like Even More

If your portfolio success hinges on just 4 stocks, your wealth is built on fragile ground. You have a small window to secure high-quality assets before the market widens and these prices disappear.

Don’t wait for the next volatility shock. Check out our Top 6 Stocks for this week. This is a curated list of our High Quality stocks that have generated a market-beating return of 244% over the last five years (as of June 30, 2025).

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 for free. Find your next big winner with StockStory today. Find your next big winner with StockStory today.