Sifting through countless of stocks in the Professional Services 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 Parsons Corporation, F5 or Inc. 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 Parsons Corporation, F5 and Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Parsons Corporation, F5 and Inc.

Parsons Corporation provides design, engineering and technical services, and smart and agile software for the United States federal government and critical infrastructure customers worldwide. It operates through Federal Solutions and Critical Infrastructure segments. The Federal Solutions segment offers critical technologies, such as cyber; air and missile defense; intelligence; aviation modernization; electronic warfare; space ground systems, cislunar, A-PNT, and classified sensors; geospatial and signals intelligence; environmental remediation; border security and counter-drug, critical infrastructure protection; counter unmanned air systems; biometrics; and bio surveillance solutions. This segment also provides software and hardware, and technical expertise; satellite ground systems support and operations, flight dynamics, data fusion and analytics, platform system integration, directed energy, joint all-domain operations, and command and control systems; digital landscape, including full-spectrum cyber, defensive cyber operations, information operations, and analytics; and electronic warfare, multi-domain operations, mission support and national to tactical operations, as well as cyber solutions and products. The Critical Infrastructure segment develops digital solutions for aviation, rail and transit, bridges, roads, highways, and urban destinations. This segment also provides planning, engineering, and management services for complex infrastructure comprising bridges, tunnels, roads and highways, and water and wastewater systems; intelligent transportation systems, utilities, environmental remediation, emerging contaminants, aviation, and rail and transit, as well as ParsonsX, a digital transformation organization; and multi-disciplinary design, technical, and management solutions. Parsons Corporation was founded in 1944 and is headquartered in Chantilly, Virginia.

F5, Inc. provides multicloud application security and delivery solutions in the United States, Europe, the Middle East, Africa, and the Asia Pacific region. The company’s distributed cloud services enable its customers to deploy, secure, and operate applications in any architecture, from on-premises to the public cloud. It also offers unified, security, networking, and application management solutions, such as web app and API protection; multi-cloud networking; application delivery and deployment; domain name system; content delivery network; and application deployment and orchestration. In addition, the company provides application security and delivery products, including NGINX Plus; NGINX One Console; NGINX Ingress Controller; WAF for NGINX; BIG-IP Packaged Software; and BIG-IP Systems. Further, it provides a range of professional services, including maintenance, consulting, training, and other technical support services. The company sells its products to large enterprise businesses, public sector institutions, governments, and service providers through distributors, value-added resellers, managed service providers, systems integrators, and other indirect channel partners. It has partnerships with public cloud providers, such as Amazon Web Services, Microsoft Azure, and Google Cloud Platform. The company was formerly known as F5 Networks, Inc. and changed its name to F5, Inc. in November 2021. F5, Inc. was incorporated in 1996 and is headquartered in Seattle, Washington.

Latest Professional Services and Parsons Corporation, F5, Inc. Stock News

As of September 2, 2026, Parsons Corporation had a $4.8 billion market capitalization, compared to the Professional Services median of $1.1 million. Parsons Corporation’s stock is NA in 2026, NA in the previous five trading days and down 43.75% in the past year.

Currently, Parsons Corporation’s price-earnings ratio is 31.2. Parsons Corporation’s trailing 12-month revenue is $6.3 billion with a 2.5% net profit margin. Year-over-year quarterly sales growth most recently was -0.5%. Analysts expect adjusted earnings to reach $2.435 per share for the current fiscal year. Parsons Corporation does not currently pay a dividend.

Currently, F5, Inc.’s price-earnings ratio is 31.2. F5, Inc.’s trailing 12-month revenue is $3.3 billion with a 22.0% net profit margin. Year-over-year quarterly sales growth most recently was 10.9%. Analysts expect adjusted earnings to reach $17.331 per share for the current fiscal year. F5, Inc. does not currently pay a dividend.

How We Compare Parsons Corporation, F5 and Inc. 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 Parsons Corporation, F5 and Inc.’s stock grades to see how they measure up against one another.

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Parsons Corporation, F5 and Inc. Stock Value Grades

Company	Ticker	Value
Parsons Corporation	PSN	C
F5, Inc.	FFIV	D

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.

AAII’s A+ Investor Value Grade derives from a stock’s value score. The Value Score is the percentile rank of the average of the percentile ranks of the price-to-sales ratio, price-earnings ratio, enterprise-value-to-EBITDA (EV/EBITDA) ratio, shareholder yield, price-to-book-value ratio and price-to-free-cash-flow ratio. The score is variable, meaning it can consider all six ratios or, should any of the six ratios not be valid, the remaining ratios that are valid. To be assigned a Value Score, stocks must have a valid (non-null) ratio and corresponding ranking for at least two of the six valuation ratios.

Stocks with a Value Score from 81 to 100 are considered deep value, those with a score between 61 and 80 are a good value and so on.

Parsons Corporation has a Value Score of 45, which is Average. F5, Inc. has a Value Score of 21, which is Expensive.

The Value Stock Winner: No Clear Winner

Neither Parsons Corporation, F5 or Inc. has a high enough value grade to be considered a “winner.” Investors who are considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolio. It’s important to look at a wide range of financial metrics in order to determine if Parsons Corporation, F5 or Inc. is the better investment when it comes to value.

Parsons Corporation, F5 and Inc.’s Quality Grades

Company	Ticker	Quality
Parsons Corporation	PSN	B
F5, Inc.	FFIV	A

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.

Parsons Corporation has a Quality Score of 68, which is Strong. F5, Inc. has a Quality Score of 94, which is Very Strong.

The Quality Grade Winner: F5, Inc.

As you can clearly see from the Quality Grade breakdown above, F5, Inc. has a better overall quality grade than Parsons Corporation. For investors who are looking for companies with higher quality than others in the same industry, F5, 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.

Parsons Corporation, F5 and Inc.’s Momentum Grades

Company	Ticker	Momentum
Parsons Corporation	PSN	F
F5, Inc.	FFIV	C

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%.

Parsons Corporation has a Momentum Score of 13, which is Very Weak. F5, Inc. has a Momentum Score of 60, which is Average.

The Momentum Stock Winner: No Clear Winner

Neither Parsons Corporation, F5 or Inc. has a strong enough Momentum Grade to be considered a “winner.” Investors considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Parsons Corporation, F5 or Inc. is the better investment when it comes to momentum.

Other Parsons Corporation, F5 and Inc. Grades

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

Growth investing builds on the idea that stocks of companies exhibiting strong, consistent and prolonged growth outperform those of slower-growth companies. AAII measures growth through consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations.

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 Parsons Corporation, F5 and Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Parsons Corporation, F5 or Inc. Stock?

Overall, Parsons Corporation stock has a Value Score of 45, Momentum Score of 13 and Quality Score of 68.

F5, Inc. stock has a Value Score of 21, Momentum Score of 60 and Quality Score of 94.

Comparing Parsons Corporation, F5 and Inc.’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.