Sifting through countless of stocks in the Insurance 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 Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies 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 Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies and Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies and Inc.

Arch Capital Group Ltd., together with its subsidiaries, provides insurance, reinsurance, and mortgage insurance products in the United States, Canada, Bermuda, the United Kingdom, Europe, and Australia. The company operates through three segments: Insurance, Reinsurance, and Mortgage. The Insurance segment offers commercial automobile; commercial multiperil; financial and professional line liability; admitted, excess, and surplus casualty lines; property and short-tail specialty; workers compensation; and casualty insurance. Its Reinsurance segment provides reinsurance products for casualty; marine and aviation; property catastrophe; property excluding property catastrophe; and other specialty products. The Mortgage segment offers U.S. primary mortgage insurance business written predominantly on loans sold to the Federal National Mortgage Association and Federal Home Loan Mortgage Corporation; reinsurance and underwriting services related to the U.S. credit-risk transfer business and other U.S. mortgage reinsurance transactions; and international mortgage insurance and reinsurance business covering loans. It markets its products through a group of licensed independent retail and wholesale brokers. The company was formerly known as Risk Capital Holdings, Inc. Arch Capital Group Ltd. was founded in 1995 and is headquartered in Pembroke, Bermuda.

Marsh & McLennan Companies, Inc., a professional services company, provides advisory services and insurance solutions to clients in the areas of risk, strategy, and people worldwide. The company operates through Risk and Insurance Services, and Consulting segments. The Risk and Insurance Services segment offers risk management services, such as risk management, insurance broking, insurance program management, risk consulting, analytical modeling, and alternative risk financing services. This segment also offers insurance and reinsurance broking, strategic advisory and actuarial services, and analytics solutions. It serves businesses, public entities, insurance companies, associations, professional services organizations, and private clients. The Consulting segment provides health, wealth and career advice, solutions and products; and specialized management, strategic, economic, and brand consulting services. Marsh & McLennan Companies, Inc. was founded in 1871 and is headquartered in New York, New York.

Marsh & McLennan Companies, Inc., a professional services company, provides advisory services and insurance solutions to clients in the areas of risk, strategy, and people worldwide. The company operates through Risk and Insurance Services, and Consulting segments. The Risk and Insurance Services segment offers risk management services, such as risk management, insurance broking, insurance program management, risk consulting, analytical modeling, and alternative risk financing services. This segment also offers insurance and reinsurance broking, strategic advisory and actuarial services, and analytics solutions. It serves businesses, public entities, insurance companies, associations, professional services organizations, and private clients. The Consulting segment provides health, wealth and career advice, solutions and products; and specialized management, strategic, economic, and brand consulting services. Marsh & McLennan Companies, Inc. was founded in 1871 and is headquartered in New York, New York.

Latest Insurance and Arch Capital Group Ltd., Marsh & McLennan Companies, Inc. Stock News

As of July 31, 2026, Arch Capital Group Ltd. had a $34.1 billion market capitalization, compared to the Insurance median of $7.1 million. Arch Capital Group Ltd.’s stock is up 4.8% in 2026, down 2.7% in the previous five trading days and up 17.43% in the past year.

Currently, Arch Capital Group Ltd.’s price-earnings ratio is 7.7. Arch Capital Group Ltd.’s trailing 12-month revenue is $19.8 billion with a 24.4% net profit margin. Year-over-year quarterly sales growth most recently was -3.3%. Analysts expect adjusted earnings to reach $9.378 per share for the current fiscal year. Arch Capital Group Ltd. does not currently pay a dividend.

Currently, Marsh & McLennan Companies, Inc.’s price-earnings ratio is 23.2. Marsh & McLennan Companies, Inc.’s trailing 12-month revenue is $27.9 billion with a 14.2% net profit margin. Year-over-year quarterly sales growth most recently was 6.2%. Analysts expect adjusted earnings to reach $10.452 per share for the current fiscal year. Marsh & McLennan Companies, Inc. currently has a 2.1% dividend yield.

How We Compare Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies 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 Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies and Inc.’s stock grades to see how they measure up against one another.

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Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies and Inc. Growth Grades

Company	Ticker	Growth
Arch Capital Group Ltd.	ACGL	A
Marsh & McLennan Companies, Inc.	MRSH	A
Marsh & McLennan Companies, Inc.	MRSH	A

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.

Arch Capital Group Ltd. has a Growth Score of 89, which is Very Strong. Marsh & McLennan Companies, Inc. has a Growth Score of 100, which is Very Strong. Marsh & McLennan Companies, Inc. has a Growth Score of 100, which is Very Strong.

The Growth Grade Winner: It’s a Tie!

Looking at the Growth Grade breakdown above, both Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies and Inc. have a grade of A. For investors who focus solely on a company’s upward growth, further research should be conducted into both companies’ other financial metrics before deciding whether to invest.

Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies and Inc.’s Quality Grades

Company	Ticker	Quality
Arch Capital Group Ltd.	ACGL	B
Marsh & McLennan Companies, Inc.	MRSH	B
Marsh & McLennan Companies, Inc.	MRSH	B

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.

Arch Capital Group Ltd. has a Quality Score of 67, which is Strong. Marsh & McLennan Companies, Inc. has a Quality Score of 80, which is Strong. Marsh & McLennan Companies, Inc. has a Quality Score of 80, which is Strong.

The Quality Grade Winner: It’s a Tie!

Looking at the Quality Grade breakdown above, both Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies and Inc. have a grade of B. For investors who focus solely on a company’s overall quality, you will need to conduct further research into both companies to see if they are a good fit for your portfolio. As a good rule of thumb, you should always analyze multiple factors based on a wide range of metrics before choosing a company to invest in.

Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies and Inc.’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Arch Capital Group Ltd.	ACGL	C
Marsh & McLennan Companies, Inc.	MRSH	B
Marsh & McLennan Companies, Inc.	MRSH	B

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

Estimate revisions offer an indication of what analysts are thinking about the short-term prospects of a firm. Estimate revisions are based on the statistical significance of a firm’s last two quarterly earnings surprises and the percentage change in its consensus estimate for the current fiscal year over the past month and past three months.

Arch Capital Group Ltd. has a Earnings Estimate Score of 51, which is Neutral. Marsh & McLennan Companies, Inc. has a Earnings Estimate Score of 63, which is Positive. Marsh & McLennan Companies, Inc. has a Earnings Estimate Score of 63, which is Positive.

The Earnings Estimate Revisions Grade Winner: Marsh & McLennan Companies, Inc.

As you can clearly see from the Earnings Estimate Revisions Grade breakdown above, Marsh & McLennan Companies, Inc. has a better Earnings Estimate Revisions Grade than Arch Capital Group Ltd.. For those who are specifically looking for companies with better short-term prospects when compared to other companies in the same industry, Marsh & McLennan Companies, Inc. could be a good stock to invest in. However, it’s important to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Other Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies and Inc. Grades

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

Momentum grades help 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.

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 Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies and Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies or Inc. Stock?

Overall, Arch Capital Group Ltd. stock has a Growth Score of 89, Estimate Revisions Score of 51 and Quality Score of 67.

Marsh & McLennan Companies, Inc. stock has a Growth Score of 100, Estimate Revisions Score of 63 and Quality Score of 80.

Marsh & McLennan Companies, Inc. stock has a Growth Score of 100, Estimate Revisions Score of 63 and Quality Score of 80.

Comparing Arch Capital Group Ltd., Marsh & McLennan Companies, Inc., Marsh & McLennan Companies 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.