A Closer Look at Arm Holdings (NasdaqGS:ARM) Valuation Following Launch of Lumex CSS AI Platform

Simply Wall St

Arm Holdings (NasdaqGS:ARM) just made headlines with its unveiling of the Lumex CSS platform, a step that is turning heads among investors and the tech industry alike. Designed to bring a serious boost to AI performance in the next generation of smartphones and PCs, Lumex CSS is already seeing early wins with industry heavyweights like Apple, Samsung, and Google signing on. This momentum, paired with Arm’s highly visible push into artificial intelligence and public support from shareholders, has put the stock in the spotlight.

This is not just about one product launch. Over the past year, Arm Holdings has worked to position itself at the intersection of AI innovation and semiconductor design. While the company’s share price has moved up around 2% over the past twelve months, recent developments, including the new chip platform and strengthened business focus, have helped the stock gain traction. With a nearly 8% jump since the Lumex CSS announcement and an overall 17% return year-to-date, there is a distinct sense that momentum is building after a period of more moderate gains.

So with Arm’s AI narrative gaining steam and big names onboard early, is this the entry point investors have been waiting for, or is the market already pricing in all that future growth?

Most Popular Narrative: Fairly Valued

The most widely followed valuation narrative currently regards Arm Holdings as fairly valued, with only a minor discount to fair value, given its ambitious growth outlook and business model transformation.

“Arm’s accelerating penetration in AI data centers, driven by hyperscalers shifting to custom silicon featuring Arm Neoverse CPUs, positions the company to capture significant royalty revenue growth. This is especially the case as their market share rises from around 18% to nearly 50% in a year. A surge in demand for connected devices and intelligent edge computing (IoT, automotive, wearables) continues to expand Arm’s addressable market. New CSS and v9 platform rollouts with higher royalty rates support long-term royalty and top-line revenue growth as AI and edge adoption increases.”

What is convincing analysts that Arm deserves this rich price? There is one key growth assumption woven into the consensus, along with a projected margin increase that could have a significant impact. Which future milestones and financial changes are fueling the story behind Arm’s fair value label? The drivers of this outlook may surprise you.

Result: Fair Value of $152.59 (ABOUT RIGHT)

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

However, execution challenges in new compute segments and heavy reliance on flagship smartphone demand could quickly undermine optimism and Arm’s lofty projections.

Find out about the key risks to this Arm Holdings narrative.

Another View: Looking Through a Different Lens

While many see Arm Holdings as fairly valued given its growth prospects, a different perspective based on our SWS DCF model suggests a less optimistic outlook. This hints that the shares may not offer a margin of safety. So, which story deserves more attention?

Look into how the SWS DCF model arrives at its fair value.

ARM Discounted Cash Flow as at Sep 2025

Stay updated when valuation signals shift by adding Arm Holdings to your watchlist or portfolio. Alternatively, explore our screener to discover other companies that fit your criteria.

Build Your Own Arm Holdings Narrative

If you want to challenge this analysis or trust your own research instincts, you can build a personalized view of Arm Holdings in just a few minutes. Do it your way.

A good starting point is our analysis highlighting 2 key rewards investors are optimistic about regarding Arm Holdings.

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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.

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