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 W. R. Berkley Corporation or Arch Capital Group Ltd. 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 W. R. Berkley Corporation and Arch Capital Group Ltd. compare based on key financial metrics to determine which better meets your investment needs.

About W. R. Berkley Corporation and Arch Capital Group Ltd.

W. R. Berkley Corporation, an insurance holding company, operates as a commercial line writer worldwide. The company operates through Insurance and Reinsurance & Monoline Excess segments. The Insurance segment underwrites commercial insurance business, including excess and surplus lines, admitted lines, and specialty personal lines. This segment also provides accident and health insurance and reinsurance products; insurance for commercial risks; casualty and specialty environmental products; insurance coverages for fine arts and jewelry exposures; excess liability and inland marine coverage for small to medium-sized insureds; and commercial general liability, umbrella, professional liability, directors and officers, commercial property, and surety products, as well as products for technology, and life sciences and travel industries. In addition, it offers cyber risk solutions; crime and fidelity insurance products; medical professional coverages; workers’ compensation insurance products; management liability and general insurance products; personal lines insurance solutions, including home, condo/co-op, auto, fine arts and collectibles, liability, collector vehicle, and recreational marine; law enforcement, public officials and educator's legal, and employment practices liability, as well as incidental medical, property, and crime insurance products; at-risk and alternative risk insurance program management services; professional liability; energy and marine risks; and insurance products to the Lloyd's marketplace. The Reinsurance & Monoline Excess segment provides treaty and facultative reinsurance solutions; property and casualty reinsurance products; facultative reinsurance products include automatic, semi-automatic, and individual risk assumed reinsurance; and turnkey products, such as cyber, employment practices liability insurance, liquor liability insurance and violent events. The company was founded in 1967 and is headquartered in Greenwich, Connecticut.

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.

Latest Insurance and W. R. Berkley Corporation, Arch Capital Group Ltd. Stock News

As of September 2, 2026, W. R. Berkley Corporation had a $26.5 billion market capitalization, compared to the Insurance median of $7.3 million. W. R. Berkley Corporation’s stock is down 0.9% in 2026, up 1.6% in the previous five trading days and down 5.36% in the past year.

Currently, W. R. Berkley Corporation’s price-earnings ratio is 14.0. W. R. Berkley Corporation’s trailing 12-month revenue is $14.9 billion with a 12.9% net profit margin. Year-over-year quarterly sales growth most recently was 1.2%. Analysts expect adjusted earnings to reach $4.874 per share for the current fiscal year. W. R. Berkley Corporation currently has a 2.8% dividend yield.

As of September 2, 2026, Arch Capital Group Ltd. had a $33.4 billion market cap, putting it in the 90th percentile of all stocks. Arch Capital Group Ltd.’s stock is up 4.4% in 2026, up 1.4% in the previous five trading days and up 7.55% 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 $19.2 billion with a 24.4% net profit margin. Year-over-year quarterly sales growth most recently was -10.5%. Analysts expect adjusted earnings to reach $9.375 per share for the current fiscal year. Arch Capital Group Ltd. does not currently pay a dividend.

How We Compare W. R. Berkley Corporation and Arch Capital Group Ltd. 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 W. R. Berkley Corporation and Arch Capital Group Ltd.’s stock grades to see how they measure up against one another.

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W. R. Berkley Corporation and Arch Capital Group Ltd. Growth Grades

Company	Ticker	Growth
W. R. Berkley Corporation	WRB	A
Arch Capital Group Ltd.	ACGL	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.

W. R. Berkley Corporation has a Growth Score of 89, which is Very Strong. Arch Capital Group Ltd. has a Growth Score of 89, which is Very Strong.

The Growth Grade Winner: It’s a Tie!

Looking at the Growth Grade breakdown above, both W. R. Berkley Corporation and Arch Capital Group Ltd. 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.

W. R. Berkley Corporation and Arch Capital Group Ltd.’s Momentum Grades

Company	Ticker	Momentum
W. R. Berkley Corporation	WRB	D
Arch Capital Group Ltd.	ACGL	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%.

W. R. Berkley Corporation has a Momentum Score of 37, which is Weak. Arch Capital Group Ltd. has a Momentum Score of 52, which is Average.

The Momentum Stock Winner: No Clear Winner

Neither W. R. Berkley Corporation or Arch Capital Group Ltd. 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 W. R. Berkley Corporation or Arch Capital Group Ltd. is the better investment when it comes to momentum.

W. R. Berkley Corporation and Arch Capital Group Ltd.’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
W. R. Berkley Corporation	WRB	B
Arch Capital Group Ltd.	ACGL	C

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.

W. R. Berkley Corporation has a Earnings Estimate Score of 76, which is Positive. Arch Capital Group Ltd. has a Earnings Estimate Score of 41, which is Neutral.

The Earnings Estimate Revisions Grade Winner: W. R. Berkley Corporation

As you can clearly see from the Earnings Estimate Revisions Grade breakdown above, W. R. Berkley Corporation 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, W. R. Berkley Corporation 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 W. R. Berkley Corporation and Arch Capital Group Ltd. Grades

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

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 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 W. R. Berkley Corporation and Arch Capital Group Ltd. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, W. R. Berkley Corporation or Arch Capital Group Ltd. Stock?

Overall, W. R. Berkley Corporation stock has a Growth Score of 89, Momentum Score of 37 and Estimate Revisions Score of 76.

Arch Capital Group Ltd. stock has a Growth Score of 89, Momentum Score of 52 and Estimate Revisions Score of 41.

Comparing W. R. Berkley Corporation and Arch Capital Group Ltd.’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.