ARM HOLDINGS PLC: A Plain-English Investor’s Guide

I wrote this guide to help you understand how Arm Holdings performed this past year. Instead of reading through hundreds of pages of dense financial reports, I have broken down the key points so you can decide if this company fits your investment goals.

1. What does this company do?

Think of Arm as the "architect" of the tech world. They don't manufacture the physical chips in your phone or laptop. Instead, they design the fundamental blueprints—the Instruction Set Architecture—that tell processors how to work. Companies like Apple, Samsung, and Qualcomm pay Arm a fee to use these designs. It is a high-profit business: once a blueprint is created, they can license it out repeatedly. Arm makes money in two ways:

• Licensing: Upfront fees companies pay to access Arm’s technology and engineering support.
• Royalties: A "toll" collected on every chip sold that uses Arm’s technology. This is the core of their business, providing steady income as the number of Arm-based chips grows in smartphones, cars, and data centers.

2. Financial Performance (Fiscal Year Ended March 31, 2026)

As of March 31, 2026, Arm has 1,064,055,252 ordinary shares outstanding.

• Revenue Drivers: Arm’s success depends on the "royalty rate" per chip and the total number of chips their partners ship. As chips become more complex for AI, Arm can charge higher royalty rates for their latest architecture, such as Armv9. This is a key way to grow revenue beyond just selling more chips.

3. Major Wins and Challenges

• Wins: Arm remains the standard for mobile computing. As the world shifts toward power-efficient AI, Arm’s low-power designs are becoming even more valuable. They are also expanding into "production silicon" with the new Arm AGI CPU, aiming to capture more value by providing complete computing systems rather than just basic blueprints.
• Challenges: Arm is moving into creating physical chip designs. This offers higher growth potential, but it creates a tricky dynamic: Arm may now compete with the very customers who pay them for licenses. Furthermore, the company faces tough competition from open-source alternatives like RISC-V, which could pressure Arm’s pricing if developers switch away from Arm’s proprietary designs.

4. Financial Health & Risks

Arm is in a high-growth, transition phase. They are spending heavily on research and development to stay ahead of competitors, which significantly impacts their profit margins.

Key Risks to Watch:

• The Qualcomm Legal Battle: Arm is in a high-stakes legal fight with Qualcomm, a major customer that accounted for 9% of Arm’s total revenue. The dispute centers on the cancellation of Qualcomm’s license agreements. A trial is expected in late 2026; an unfavorable outcome could hurt a significant portion of Arm’s royalty income.
• The "SoftBank Shadow": SoftBank Group owns 86.4% of the company. This creates risks, including potential stock price swings if they decide to sell large blocks of shares, and the risk of more shares being issued, which would reduce your ownership percentage.
• Tax & Legal "Fine Print" for U.S. Investors:
  • No Jury Trials: By holding Arm’s American Depositary Shares, you waive your right to a jury trial in disputes against the company.
  • Tax Complexity: Arm is a U.K.-based company. There is a risk of being classified as a "Passive Foreign Investment Company," which can lead to negative U.S. tax consequences.
  • Tax Incentives: Arm relies on U.K. tax breaks for research and a "patent box" that taxes certain profits at a lower 10% rate. If the U.K. government changes these policies, Arm’s tax bill could rise and hurt their bottom line.
  • Limited Recourse: The agreement governing your shares limits the company’s liability for various losses, including "acts of God" or failures in clearing systems.

5. Future Outlook

The company is betting big on "AI everywhere." By moving beyond simple blueprints into complete chip solutions, they hope to capture more value in data centers and cloud infrastructure. However, they face a challenge: they need to grow in these new markets to move beyond the saturated smartphone sector, but those markets are already dominated by competitors with deep pockets and established ecosystems.

Investor Takeaway: Arm is a dominant player in the semiconductor space with a unique, high-margin business model. When deciding if this is right for your portfolio, weigh the potential of their AI expansion against the concentration risk of their major shareholders and the ongoing legal uncertainty with key partners like Qualcomm.