Sifting through countless of stocks in the Commercial Services & Supplies industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in Tetra Tech, Inc. or Vestis Corporation because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how Tetra Tech, Inc. and Vestis Corporation compare based on key financial metrics to determine which better meets your investment needs.

About Tetra Tech, Inc. and Vestis Corporation

Tetra Tech, Inc. provides consulting and engineering services focusing on water, environment, and sustainable infrastructure in the United States and internationally. The company operates through two segments, Government Services Group (GSG) and Commercial/International Services Group (CIG). The GSG segment offers consulting and engineering services, including water resources analysis and water management, environmental monitoring, data analytics, government consulting, waste management, and civil infrastructure master planning and resilient engineering design for facilities, as well as transportation and local development projects primarily to government clients, including federal, state, and local, as well as international development agencies. It also offers sustainable solutions, such as energy management consulting, and greenhouse gas inventory assessment, certification, reduction, and management services. The CIG segment provides consulting and engineering services, including natural resources, energy, and utilities, as well as sustainable infrastructure master planning and engineering design for facilities; and transportation and local development projects to commercial and international clients, including the commercial and government sectors. The company offers early data collection and monitoring, data analysis and information management, science and engineering applied research, engineering design, project management, and operations and maintenance services; climate change consulting; greenhouse gas inventory assessment, certification, reduction, and management services; environmental remediation and reconstruction services, industrial water treatment and reuse services; and engineering services, such as data centers, advanced manufacturing, security systems, training and audiovisual facilities, clean rooms, laboratories, medical facilities, and disaster preparedness facilities. The company was founded in 1966 and is headquartered in Pasadena, California.

Vestis Corporation provides uniform rentals and workplace supplies in the United States and Canada. Its products include uniform options, such as shirts, pants, outerwear, gowns, scrubs, high visibility garments, particulate-free garments, and flame-resistant garments, as well as shoes and accessories; and workplace supplies, including managed restroom supply services, first-aid supplies and safety products, floor mats, towels, and linens. The company serves manufacturing, hospitality, retail, food processing, food service, pharmaceuticals, healthcare, automotive, and cleanroom industries. Vestis Corporation was founded in 1936 and is headquartered in Roswell, Georgia.

Latest Commercial Services & Supplies and Tetra Tech, Inc., Vestis Corporation Stock News

As of July 31, 2026, Tetra Tech, Inc. had a $8.5 billion market capitalization, compared to the Commercial Services & Supplies median of $758.6 million. Tetra Tech, Inc.’s stock is down 1.1% in 2026, up 4.6% in the previous five trading days and down 10.72% in the past year.

Currently, Tetra Tech, Inc.’s price-earnings ratio is 19.7. Tetra Tech, Inc.’s trailing 12-month revenue is $4.4 billion with a 10.0% net profit margin. Year-over-year quarterly sales growth most recently was -4.9%. Analysts expect adjusted earnings to reach $1.573 per share for the current fiscal year. Tetra Tech, Inc. currently has a 0.9% dividend yield.

As of July 31, 2026, Vestis Corporation had a $1.9 billion market cap, putting it in the 53rd percentile of all stocks. Vestis Corporation’s stock is up 116.8% in 2026, down 7.2% in the previous five trading days and up 136.66% in the past year.

Currently, Vestis Corporation does not have a price-earnings ratio. Vestis Corporation’s trailing 12-month revenue is $2.7 billion with a -0.6% net profit margin. Year-over-year quarterly sales growth most recently was -0.9%. Analysts expect adjusted earnings to reach $0.485 per share for the current fiscal year. Vestis Corporation does not currently pay a dividend.

How We Compare Tetra Tech, Inc. and Vestis Corporation Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at Tetra Tech, Inc. and Vestis Corporation’s stock grades to see how they measure up against one another.

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Tetra Tech, Inc. and Vestis Corporation Growth Grades

Company	Ticker	Growth
Tetra Tech, Inc.	TTEK	A
Vestis Corporation	VSTS	C

The foundation of growth investing is seeking out stocks of companies exhibiting strong, consistent and prolonged growth that is expected to continue into the future.

In order to compute the growth score and assign it a letter grade, the percentile ranks for each of three components‐consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations‐must be determined. These three rank figures are added together, and the sum is ranked against the entire stock universe to arrive at a company’s Growth Score to create an equal distribution of grades.

The companies in the bottom 20% of the stock universe receive Growth Grades of F, considered to be very weak, while those in the top 20% receive A grades, which are considered very strong.

Tetra Tech, Inc. has a Growth Score of 89, which is Very Strong. Vestis Corporation has a Growth Score of 43, which is Average.

The Growth Grade Winner: Tetra Tech, Inc.

As you can clearly see from the Growth Grade breakdown above, Tetra Tech, Inc. has a more attractive growth grade than Vestis Corporation. For investors who focus solely on how a company is growing relative to other companies in the same industry, Tetra Tech, Inc. could be a good stock to add to their portfolio. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Tetra Tech, Inc. and Vestis Corporation’s Quality Grades

Company	Ticker	Quality
Tetra Tech, Inc.	TTEK	A
Vestis Corporation	VSTS	C

Like the Value Grade, AAII’s A+ Investor Quality Grade comes from the percentile rank of key metrics. Specifically, the Quality Score is the percentile rank of the average of the percentile ranks of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and the F-Score.

The score is variable, meaning it can consider all eight measures or, should any of the eight measures not be valid, the remaining measures that are valid. To be assigned a Quality Score, stocks must have a valid (non-null) measure and corresponding ranking for at least four of the eight quality measures.

The Quality Score is used to assess the underlying “quality” of a particular stock. A higher-quality stock possesses traits associated with upside potential and reduced downside risk. Backtesting of the Quality Grade shows that stocks with higher grades, on average, outperformed stocks with lower grades over the period of 1998 through 2019.

Stocks receive better grades (higher scores) for having higher scores for the quality subcomponents and worse grades (lower scores) for lower scores for the subcomponents.

Tetra Tech, Inc. has a Quality Score of 97, which is Very Strong. Vestis Corporation has a Quality Score of 58, which is Average.

The Quality Grade Winner: Tetra Tech, Inc.

As you can clearly see from the Quality Grade breakdown above, Tetra Tech, Inc. has a better overall quality grade than Vestis Corporation. For investors who are looking for companies with higher quality than others in the same industry, Tetra Tech, Inc. could be a good stock to add to their portfolios. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Tetra Tech, Inc. and Vestis Corporation’s Momentum Grades

Company	Ticker	Momentum
Tetra Tech, Inc.	TTEK	D
Vestis Corporation	VSTS	A

Momentum grades help to uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming. Momentum is based on the price change of a stock over a specified period relative to all other stocks.

Typically, AAII looks at the weighted relative strength over the trailing four quarters. The weighted four-quarter relative strength rank is the relative price change for each of the past four quarters. The most recent quarterly price change is given a weight of 40% and each of the three previous quarters are given a weighting of 20%.

Tetra Tech, Inc. has a Momentum Score of 39, which is Weak. Vestis Corporation has a Momentum Score of 95, which is Very Strong.

The Momentum Grade Winner: Vestis Corporation

As you can clearly see from the Momentum Grade breakdown above, Vestis Corporation is considered to have stronger momentum compared to Tetra Tech, Inc.. For those specifically looking for companies that have stronger momentum compared to other companies in the same industry, Vestis Corporation could be a good stock to invest in. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Other Tetra Tech, Inc. and Vestis Corporation Grades

In addition to Growth, Momentum and Quality, A+ Investor also provides grades for Value and Estimate Revisions.

Earnings estimate revisions scores take into account the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, surprises beget further surprises‐or at least continued sales growth (the exact opposite is generally true, too).

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection. Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether Tetra Tech, Inc. and Vestis Corporation pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Tetra Tech, Inc. or Vestis Corporation Stock?

Overall, Tetra Tech, Inc. stock has a Growth Score of 89, Momentum Score of 39 and Quality Score of 97.

Vestis Corporation stock has a Growth Score of 43, Momentum Score of 95 and Quality Score of 58.

Comparing Tetra Tech, Inc. and Vestis Corporation’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.