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3 Reasons to Sell TMO and 1 Stock to Buy Instead

By: StockStory

March 14, 2025 at 05:09 AM EDT

TMO Cover Image

Over the last six months, Thermo Fisher shares have sunk to $508.90, producing a disappointing 17.1% loss - worse than the S&P 500’s 1.2% drop. This might have investors contemplating their next move.

Is there a buying opportunity in Thermo Fisher, or does it present a risk to your portfolio? Get the full breakdown from our expert analysts, it’s free.

Despite the more favorable entry price, we're sitting this one out for now. Here are three reasons why we avoid TMO and a stock we'd rather own.

Why Is Thermo Fisher Not Exciting?

Known for its involvement in the Human Genome Project, Thermo Fisher (NYSE: TMO) supplies instruments, laboratory equipment, and reagents for scientific research and healthcare.

1. Core Business Falling Behind as Demand Declines

In addition to reported revenue, organic revenue is a useful data point for analyzing Research Tools & Consumables companies. This metric gives visibility into Thermo Fisher’s core business because it excludes one-time events such as mergers, acquisitions, and divestitures along with foreign currency fluctuations - non-fundamental factors that can manipulate the income statement.

Over the last two years, Thermo Fisher’s organic revenue averaged 2.8% year-on-year declines. This performance was underwhelming and implies it may need to improve its products, pricing, or go-to-market strategy. It also suggests Thermo Fisher might have to lean into acquisitions to grow, which isn’t ideal because M&A can be expensive and risky (integrations often disrupt focus). Thermo Fisher Organic Revenue Growth

2. Shrinking Adjusted Operating Margin

Adjusted operating margin is an important measure of profitability as it shows the portion of revenue left after accounting for all core expenses – everything from the cost of goods sold to advertising and wages. It’s also useful for comparing profitability across companies because it excludes non-recurring expenses, interest on debt, and taxes.

Analyzing the trend in its profitability, Thermo Fisher’s adjusted operating margin decreased by 7 percentage points over the last five years. This raises questions about the company’s expense base because its revenue growth should have given it leverage on its fixed costs, resulting in better economies of scale and profitability. Its adjusted operating margin for the trailing 12 months was 22.6%.

Thermo Fisher Trailing 12-Month Operating Margin (Non-GAAP)

3. New Investments Fail to Bear Fruit as ROIC Declines

ROIC, or return on invested capital, is a metric showing how much operating profit a company generates relative to the money it has raised (debt and equity).

We like to invest in businesses with high returns, but the trend in a company’s ROIC is what often surprises the market and moves the stock price. Over the last few years, Thermo Fisher’s ROIC has unfortunately decreased. We like what management has done in the past, but its declining returns are perhaps a symptom of fewer profitable growth opportunities.

Thermo Fisher Trailing 12-Month Return On Invested Capital

Final Judgment

Thermo Fisher’s business quality ultimately falls short of our standards. Following the recent decline, the stock trades at 22.1× forward price-to-earnings (or $508.90 per share). Beauty is in the eye of the beholder, but we don’t really see a big opportunity at the moment. We're fairly confident there are better investments elsewhere. Let us point you toward a dominant Aerospace business that has perfected its M&A strategy.

Stocks We Would Buy Instead of Thermo Fisher

With rates dropping, inflation stabilizing, and the elections in the rearview mirror, all signs point to the start of a new bull run - and we’re laser-focused on finding the best stocks for this upcoming cycle.

Put yourself in the driver’s seat by checking out our Top 9 Market-Beating Stocks. This is a curated list of our High Quality stocks that have generated a market-beating return of 175% over the last five years.

Stocks that made our list in 2019 include now familiar names such as Nvidia (+2,183% between December 2019 and December 2024) as well as under-the-radar businesses like Comfort Systems (+751% five-year return). Find your next big winner with StockStory today for free.

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