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Is Arthur J. Gallagher (AJG) Now Attractive After A 36% One Year Share Price Slide

Simply Wall St·05/03/2026 00:50:57
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  • Investors may be wondering whether Arthur J. Gallagher is starting to look interesting at its current price, or if the stock still has room to fall before it feels like good value.
  • The shares closed at US$208.11 recently, with returns of a 3.4% decline over 7 days, a 4.4% decline over 30 days, an 18.7% decline year to date and a 36.5% decline over the past year. This compares with a more muted 0.1% return over 3 years and a 45.1% gain over 5 years.
  • These moves have arrived alongside ongoing coverage of the insurance sector and investor focus on how intermediaries like Arthur J. Gallagher are positioned in the broader market. This article is not tied to a single headline; instead, it aims to give that price action clearer context for long term investors.
  • Right now, Arthur J. Gallagher has a valuation score of 3 out of 6. This means half of the standard checks point to the shares trading below their estimated value and the rest do not. The next step is a closer look at the usual valuation tools, followed by a potentially more useful way to think about what the market is pricing in.

Find out why Arthur J. Gallagher's -36.5% return over the last year is lagging behind its peers.

Approach 1: Arthur J. Gallagher Excess Returns Analysis

The Excess Returns model starts with a simple idea. If a company consistently earns more on its equity than its investors require, that “excess” can justify a share price above book value. For Arthur J. Gallagher, the model uses an average return on equity of 14.46% versus a cost of equity of $7.97 per share to estimate how much value those extra returns might support over time.

The current book value is $92.53 per share and the stable book value used in the model is $114.26 per share, based on future book value estimates from 2 analysts. On the earnings side, the model assumes a stable EPS of $16.52 per share, sourced from weighted future return on equity estimates from 4 analysts. That leads to an excess return of $8.55 per share, which is capitalized to arrive at an intrinsic value of about $353.88 per share using this method.

Compared with the recent share price of US$208.11, the Excess Returns valuation implies the stock is about 41.2% undervalued on this framework.

Result: UNDERVALUED

Our Excess Returns analysis suggests Arthur J. Gallagher is undervalued by 41.2%. Track this in your watchlist or portfolio, or discover 51 more high quality undervalued stocks.

AJG Discounted Cash Flow as at May 2026
AJG Discounted Cash Flow as at May 2026

Head to the Valuation section of our Company Report for more details on how we arrive at this Fair Value for Arthur J. Gallagher.

Approach 2: Arthur J. Gallagher Price vs Earnings

The P/E ratio is a common way to value profitable companies because it links what you pay for each share directly to the earnings that support that share. In simple terms, a higher P/E often reflects higher expected growth or lower perceived risk, while a lower P/E can reflect lower growth expectations or higher risk.

Arthur J. Gallagher is currently trading on a P/E of 33.16x. That sits above the Insurance industry average P/E of 11.45x and also above the peer group average of 17.53x. On the surface, that points to the market assigning a richer price tag to each dollar of the company’s earnings compared to many insurers and close peers.

Simply Wall St’s Fair Ratio is an attempt to refine this by estimating what a more tailored P/E might look like given factors such as earnings growth, industry, profit margin, market cap and risk profile. For Arthur J. Gallagher, this Fair Ratio is 15.03x, which is below the current 33.16x. Because the Fair Ratio incorporates more company specific inputs than a simple comparison with peers or the wider industry, it can give a clearer view of how much is already reflected in the share price.

Result: OVERVALUED

NYSE:AJG P/E Ratio as at May 2026
NYSE:AJG P/E Ratio as at May 2026

P/E ratios tell one story, but what if the real opportunity lies elsewhere? Start investing in legacies, not executives. Discover our 18 top founder-led companies.

Upgrade Your Decision Making: Choose your Arthur J. Gallagher Narrative

Earlier it was mentioned that there is an even better way to understand valuation, so Narratives are introduced here as your way of attaching a clear story about Arthur J. Gallagher to the numbers, by linking your assumptions for future revenue, earnings, margins and fair value to what you think is really happening in the business.

On Simply Wall St’s Community page, Narratives are an easy tool that connect this story to a full forecast and a fair value estimate, then set that against the current price so you can quickly see whether your view points to the shares looking expensive or cheap based on your own work rather than only standard models.

Because Narratives on the platform update as new information such as news or earnings is added, you can keep using the same framework while the inputs change. For example, one Arthur J. Gallagher investor might anchor on a Fair Value around US$485.74 while another works off US$250.00, and each of those views will keep adjusting over time as their underlying assumptions are refreshed.

Do you think there's more to the story for Arthur J. Gallagher? Head over to our Community to see what others are saying!

NYSE:AJG 1-Year Stock Price Chart
NYSE:AJG 1-Year Stock Price Chart

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.