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Allegro MicroSystems (ALGM) Could Be 33% Below Fair Value As Growth Hopes Return

Simply Wall St · 1d ago

Why Allegro MicroSystems Is Back on Investor Radars

Allegro MicroSystems (ALGM) is back in focus after recent commentary highlighted perceived undervaluation, alongside expectations for growth and margin expansion, with sentiment supported by recovery trends in industrial automation and data center markets.

Over the past year, Allegro MicroSystems has combined a strong year to date share price return of 36.05% with a more modest 1 year total shareholder return of 19.76%. The share price has recently pulled back, with the 30 day share price return declining 16.36% and the 90 day share price return down 24.03%, suggesting earlier optimism is being reassessed even as interest in the longer term growth and valuation story builds again.

Compare Allegro MicroSystems with a hand picked group of semiconductor peers by scanning the 55 AI infrastructure stocks that are exposed to AI data centers and power hungry computing demand.

The recent pullback at Allegro MicroSystems could be read as sentiment cooling rather than business fundamentals changing. Before you decide which view fits best, it helps to see how the current share price lines up against valuation anchors.

Most Popular Narrative: 33.2% Undervalued

At a last close of $36.61 against a narrative fair value of about $54.83, Allegro MicroSystems is framed as materially mispriced, with that gap pinned on long run earnings power rather than short term sentiment.

Industrial automation and data center markets are rebounding, with design wins and expanding content in high-growth sectors (data center cooling, robotics, automation), indicating increasing demand for Allegro's advanced sensors and power ICs. This is expected to drive higher revenues and incremental margin improvements as secular demand trends strengthen.

Read the complete narrative.

To understand why this narrative emphasizes stronger margins and faster revenue growth, it is useful to look at how future earnings and valuation multiples are incorporated into the $54.83 figure.

Result: Fair Value of $54.83 (UNDERVALUED)

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

However, this hinges on upbeat auto and China assumptions, so weaker EV demand or stronger local competition could quickly challenge the Allegro MicroSystems undervaluation story.

Find out about the key risks to this Allegro MicroSystems narrative.

Another View On Allegro MicroSystems Valuation

While the analyst narrative frames Allegro MicroSystems as about 33.2% undervalued on long term earnings power, the current P/S ratio of 7.2x tells a different story. That is higher than the US Semiconductor industry at 6.6x and above a fair ratio estimate of 5x, which points to valuation risk if expectations ease. Which signal do you put more weight on?

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

NasdaqGS:ALGM P/S Ratio as at Sep 2026
NasdaqGS:ALGM P/S Ratio as at Sep 2026

Next Steps

With such mixed sentiment around Allegro MicroSystems, it helps to move quickly, review the full picture, and weigh both the 4 key rewards and 2 important warning signs.

Looking For More Investment Ideas Beyond Allegro MicroSystems?

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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.