Arm’s biggest customers are also backing a rival chip design — here’s what you need to know
Dado Ruvic | Reuters
With Arm slated to start trading on the Nasdaq on Thursday, investors are considering the potential upsides — and downsides — of investing in the company.
The British chip designer itself flagged several risks in its IPO prospectus, ranging from its China business to geopolitics, but one potential threat has gained traction as its listing nears.
It’s called RISC-V, pronounced “risk five” — a rival chip design that is backed by some of Arm’s own customers.
While analysts told CNBC it’s not an immediate threat, Arm itself warned that if it gains traction, it could pose a competitive risk.
What is RISC-V?
To understand RISC-V, let’s consider what Arm actually does. Arm designs what’s known as an instruction set architecture (ISA) for chips known as processors or central processing units (CPUs). These chips can be thought of as the brain of an electronic device.
Arm’s ISA is effectively the blueprint for processors that other companies, from Apple to Qualcomm, base their chips on.
Arm charges these companies licensing fees to use its technology to build their own chips. It also gets royalties when these chips are produced and go into end devices. Arm’s designs underpin processors in 99% of the world’s smartphones.
RISC-V, meanwhile, is an entirely different instruction set architecture. RISC stands for reduced instruction set computer.
The main difference is that RISC-V is open-source, meaning it’s free to use.
“If RISC-V-related technology continues to be developed and market support for RISC-V increases, our customers may choose to utilize this free, open-source architecture instead of our products,” Arm said in its IPO prospectus.
Is RISC-V gaining traction?
RISC-V in recent years has gained support from some of the world’s biggest technology companies, many of which are also Arm customers.
Google, Samsung, Qualcomm and Nvidia, for instance, are part of a consortium formed in 2020 to develop RISC-V-based technologies.
Arm warned that if this development is successful, there could be a viable alternative to its architecture.
“Although the development of alternative architectures and technology is a time-intensive process, if our competitors establish cooperative relationships or consolidate with each other or third parties, such as the recently announced joint venture focused on RISC-V, they may have additional resources that would allow them to more quickly develop architectures and other technology that directly compete with our products,” Arm said in its IPO prospectus.
Support for RISC-V was “galvanized” after Nvidia proposed to buy Arm for $40 billion in 2020, according to technology researcher Richard Windsor, founder of Radio Free Mobile.
He suggested that other players were worried that if a major customer like Nvidia controlled Arm, it could be a disadvantage to some of Nvidia’s rivals.
The proposed takeover “raised a lot of hackles in the industry” and some Arm customers are “starting to think twice” about their dependency on the company, Windsor told CNBC this week.
“Maybe we should have a second source just in case things start not going in our direction, or we have problems with Arm,” he added, in reference to the thinking among some Arm customers.
Is RISC-V a threat to Arm?
The general consensus is that, right now, RISC-V doesn’t pose a major threat to Arm. That’s because the technology is currently far inferior to Arm’s offering.
“The issue with RISC-V is it’s much more immature. It doesn’t have the same level of support for more advanced designs,” Peter Richardson, research director at Counterpoint Research, told CNBC.
“RISC-V is quite far away from being at that leading edge, but for some workloads not at the cutting edge, then RISC-V can work quite well.”
One of Arm’s big successes is its huge customer base of major tech players. This has allowed Cambridge, England-based company to build an “ecosystem” of companies that rely on its technology — an advantage that RISC-V doesn’t have.
“Whenever you devise software that runs on one Arm, it will run on all the others as well,” Herman Hauser, founder of Acorn Computers, the company behind the first Arm chip, told CNBC’s “Squawk Box Europe” on Thursday. “So I think Arm will continue to retain its dominant position.”
However, there are fears that Chinese companies in particular could view RISC-V as a cheaper — and more appealing — alternative, particularly if Arm increases its prices.
“If Arm raises its prices, what are chip designers in China going to do? They’re probably going to go for the free version. I wouldn’t be surprised if China really scales up on RISC-V,” Cyrus Mewawalla, head of thematic intelligence at Global Data, told CNBC this week.
Oracle CEO Safra Catz speaks at the FII PRIORITY Summit in Miami Beach, Florida, on Feb. 20, 2025.
Joe Raedle | Getty Images
Oracle shares jumped more than 5% after a recent filing showed a cloud deal that would add over $30 billion annually.
CEO Safra Catz is slated to share the deal news at a company meeting Monday, according to a filing with the Securities and Exchange Commission. The revenues are expected to start hitting in the 2028 fiscal year.
“Oracle is off to a strong start in FY26,” Catz is expected to say, according to the filing. “Our MultiCloud database revenue continues to grow at over 100%, and we signed multiple large cloud services agreements including one that is expected to contribute more than $30 billion in annual revenue starting in FY28.”
The deals revealed Monday by Catz will not affect the company’s 2026 guidance, according to the filing.
U.S. President Donald Trump announced on April 4 that he would again postpone enforcement of a law banning TikTok unless its Chinese owner ByteDance divests from the platform.
Vcg | Visual China Group | Getty Images
U.S. President Donald Trump told Fox News in an interview aired on Sunday that he has a group of “very wealthy people” ready to buy TikTok, whose identities he can reveal in about two weeks.
Trump added that the deal will probably need Beijing’s approval to move forward, but said “I think President Xi will probably do it,” in reference to China’s leader Xi Jinping.
The president made the off-the-cuff remarks while discussing the possibility of another pause of his “reciprocal” tariffs on Fox News’ “Sunday Morning Futures with Maria Bartiromo.”
Tiktok’s fate in the U.S. has been in doubt since the approval of a law in 2024 that sought to ban the platform unless its Chinese owner, ByteDance, divested from it. The legislation was driven by concerns that the Chinese government could manipulate content and access sensitive data from American users.
Earlier this month, Trump extended the deadline for ByteDance to divest from the platform’s U.S. business. It was his third extension since the Supreme Court upheld the TikTok law just a few days before Trump’s second presidential inauguration in January. The new deadline is Sept. 17.
The Protecting Americans from Foreign Adversary Controlled Applications Act, of PAFACA, had originally been set to take effect on Jan. 19, after which app store operators and internet service providers would be penalized for supporting TikTok.
TikTok went dark in the U.S. ahead of the original deadline, but was restored after Trump provided it with assurances on the extension.
Trump, who credited the app with boosting his support among young voters in the last presidential election, has maintained that he would like to see the platform stay afloat under new ownership.
Potential buyers that have voiced interest in the app include Trump insiders such as Oracle’s Larry Ellison to firms like AppLovin and Perplexity AI.
However, it’s unclear if ByteDance would be willing to sell the company. Any potential divestiture is likely to require approval from the Chinese government.
A deal that would have spun off TikTok’s U.S. operations and allowed ByteDance to retain a minority position had been in the works in April, but was derailed by the announcement of Donald Trump’s tariffs on China, Reuters reported that month.
The president previously floated a proposal for American stakeholders to buy the company and then sell a 50% stake to the U.S. government as part of a joint venture.
Experts have previously told CNBC that any potential deal could face legal challenges in the U.S., depending on whether it complies with PAFACA.
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