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 Robert Half Inc. or ManpowerGroup 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 Robert Half Inc. and ManpowerGroup Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Robert Half Inc. and ManpowerGroup Inc.

Robert Half Inc. provides talent solutions and business consulting services in the United States and internationally. The company operates through three segments: Contract Talent Solutions, Permanent Placement Talent Solutions, and Protiviti. The Contract Talent Solutions segment provides contract engagement professionals in the fields of finance and accounting, technology, marketing and creative, legal and administrative, and customer support. The Permanent Placement Talent Solutions segment engages in the placement of full-time accounting, finance, and tax and accounting operations personnel. The Protiviti segment offers a range of consulting and managed solutions for regulatory compliance, finance, technology, operations, data, digital, legal, HR, governance, risk, and internal audit. The company markets its contract talent and permanent placement services to clients and employment candidates through national and local advertising activities, including radio, digital advertising, job boards, alliance partners, and events. The company offers its services primarily under the Robert Half and Protiviti brands. The company was formerly known as Robert Half International Inc. and changed its name to Robert Half Inc. in July 2023. Robert Half Inc. was founded in 1948 and is headquartered in Menlo Park, California.

ManpowerGroup Inc. provides workforce solutions and services under the Manpower, the Experis, and the Talent Solutions brands in the Americas, Southern Europe, Northern Europe, and the Asia Pacific/the Middle East. The company offers recruitment services, including permanent, temporary, and contract recruitment of professionals, as well as administrative, industrial, and information technology professional positions; assessment, upskilling, reskilling, training and development, career management, and workforce consulting services; and outsourcing services related to human resources functions primarily in the areas of large-scale recruiting and workforce-intensive initiatives. It also offers contingent staffing and permanent recruitment services; information technology professional resourcing and project services; and recruitment process outsourcing solutions; and right management services, as well as TAPFIN, a managed service provider solution. ManpowerGroup Inc. was incorporated in 1948 and is headquartered in Milwaukee, Wisconsin.

Latest Professional Services and Robert Half Inc., ManpowerGroup Inc. Stock News

As of September 1, 2026, Robert Half Inc. had a $4.4 billion market capitalization, compared to the Professional Services median of $1.1 million. Robert Half Inc.’s stock is up 58% in 2026, down 3.7% in the previous five trading days and up 16.69% in the past year.

Currently, Robert Half Inc.’s price-earnings ratio is 37.9. Robert Half Inc.’s trailing 12-month revenue is $5.3 billion with a 2.2% net profit margin. Year-over-year quarterly sales growth most recently was -2.4%. Analysts expect adjusted earnings to reach $1.273 per share for the current fiscal year. Robert Half Inc. currently has a 5.4% dividend yield.

As of September 1, 2026, ManpowerGroup Inc. had a $2.8 billion market cap, putting it in the 59th percentile of all stocks. ManpowerGroup Inc.’s stock is up 102.7% in 2026, down 2.7% in the previous five trading days and up 44.32% in the past year.

Currently, ManpowerGroup Inc.’s price-earnings ratio is 27.5. ManpowerGroup Inc.’s trailing 12-month revenue is $18.7 billion with a 0.6% net profit margin. Year-over-year quarterly sales growth most recently was 7.5%. Analysts expect adjusted earnings to reach $3.620 per share for the current fiscal year. ManpowerGroup Inc. currently has a 2.4% dividend yield.

How We Compare Robert Half Inc. and ManpowerGroup 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 Robert Half Inc. and ManpowerGroup Inc.’s stock grades to see how they measure up against one another.

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Robert Half Inc. and ManpowerGroup Inc. Stock Value Grades

Company	Ticker	Value
Robert Half Inc.	RHI	D
ManpowerGroup Inc.	MAN	B

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.

Robert Half Inc. has a Value Score of 34, which is Expensive. ManpowerGroup Inc. has a Value Score of 76, which is Value.

The Value Stock Winner: ManpowerGroup Inc.

As you can clearly see from the Value Grade breakdown above, ManpowerGroup Inc. is considered to have better value than Robert Half Inc.. For investors who focus solely on a company’s valuation, ManpowerGroup 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.

Robert Half Inc. and ManpowerGroup Inc. Growth Grades

Company	Ticker	Growth
Robert Half Inc.	RHI	C
ManpowerGroup Inc.	MAN	F

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.

Robert Half Inc. has a Growth Score of 43, which is Average. ManpowerGroup Inc. has a Growth Score of 8, which is Very Weak.

The Growth Stock Winner: No Clear Winner

Neither Robert Half Inc. or ManpowerGroup Inc. has a high enough Growth 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 portfolios. It’s important to look at a wide range of financial metrics in order to determine if Robert Half Inc. or ManpowerGroup Inc. is the better investment when it comes to sustainable growth.

Robert Half Inc. and ManpowerGroup Inc.’s Momentum Grades

Company	Ticker	Momentum
Robert Half Inc.	RHI	A
ManpowerGroup Inc.	MAN	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%.

Robert Half Inc. has a Momentum Score of 84, which is Very Strong. ManpowerGroup Inc. has a Momentum Score of 96, which is Very Strong.

The Momentum Grade Winner: It’s a Tie!

Looking at the Momentum Grade breakdown above, both Robert Half Inc. and ManpowerGroup Inc. have a grade of A. For those who focus solely on a company’s momentum, further research will need to be conducted into both companies to see if they fit your individual needs as an investor.

Other Robert Half Inc. and ManpowerGroup Inc. Grades

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

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).

AAII’s A+ Investor Quality Grade comes from the ranking of key metrics. Specifically, the quality grade is the percentile rank of the composite 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 F-Score.

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 Robert Half Inc. and ManpowerGroup Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Robert Half Inc. or ManpowerGroup Inc. Stock?

Overall, Robert Half Inc. stock has a Value Score of 34, Growth Score of 43 and Momentum Score of 84.

ManpowerGroup Inc. stock has a Value Score of 76, Growth Score of 8 and Momentum Score of 96.

Comparing Robert Half Inc. and ManpowerGroup 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.