Assessing ALS (ASX:ALQ) Valuation After May 2026 Cyber Security Incident

ALS cyber incident puts spotlight on ASX:ALQ stock

ALS (ASX:ALQ) is back in focus after a May 2026 cyber security incident that caused temporary operational disruption, with most systems now restored as the company works with specialists and regulators.

See our latest analysis for ALS.

The cyber incident arrives after a mixed stretch for the stock, with the 1-day share price return up 2.25% to A$22.27, the 90-day share price return down 7.29%, and the 5-year total shareholder return at 133.90%, which points to strong long term performance despite some recent cooling in momentum.

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With ALS trading at A$22.27, modestly below the average analyst price target of A$23.92 and with solid recent revenue and net income growth, investors now have to ask: is there genuine value here or is the market already pricing in future growth?

Most Popular Narrative: 6.1% Undervalued

ALS's most followed valuation narrative places fair value at about A$23.72, a shade above the latest A$22.27 close. This sets up a modest undervaluation story rather than a deep discount.

Fair Value: A$23.72 vs A$22.47, risen moderately based on the latest set of inputs. Discount Rate: 7.22% vs 7.08%, risen slightly, implying a marginally higher required return in the model.

Read the complete narrative.

Curious what justifies lifting fair value while trimming long term revenue expectations and keeping margins steady, yet applying a richer future earnings multiple? The full narrative walks through how those moving parts, from growth assumptions to the P/E used on future earnings, are stitched together into that A$23.72 figure.

Result: Fair Value of A$23.72 (UNDERVALUED)

Have a read of the narrative in full and understand what's behind the forecasts.

However, you still need to factor in risks such as pressure on EBIT margins from acquisitions and higher net debt costs, which could challenge those updated fair value assumptions.

Find out about the key risks to this ALS narrative.

Another View: Rich Multiples Raise a Flag

That 6.1% undervaluation story sits awkwardly beside ALS's current P/E of 41.7x, which is well above both the global Professional Services average of 16.1x and the peer average of 27.7x, as well as a 29x fair ratio that the market could eventually gravitate toward.

In practical terms, you are paying a premium multiple today, so any wobble in earnings or sentiment could compress that gap quickly. Continued delivery would also need to work hard just to keep the valuation where it is. Which side of that trade-off feels more likely to you right now?

See what the numbers say about this price — find out in our valuation breakdown.

Next Steps

Seeing both risks and rewards in the story so far, it makes sense to look at the underlying data yourself and move quickly to form an independent view, starting with the 2 key rewards and 1 important warning sign

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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.