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A man walks past a logo of SK Hynix at the lobby of the company’s Bundang office in Seongnam on January 29, 2021.

Jung Yeon-Je | AFP | Getty Images

South Korean memory chipmaker SK Hynix said Friday that it was ready to mass produce its next-generation high-bandwidth memory chips, staying ahead of rivals and sending the company’s stock soaring. 

HBM is a type of memory that is used in chipsets for artificial-intelligence computing, including in chips from global AI giant Nvidia — a major client of SK Hynix. 

SK Hynix said earlier this year that it had shipped samples of its HBM4 chips to customers, as it sought to beat competitors including Samsung Electronics and Micron Technologies.

According to its announcement Friday, the company has finished its internal validation and quality assurance process for HBM4 and is ready to manufacture those at scale.

“Completion of HBM4 development will be a new milestone for the industry,” said Joohwan Cho, head of HBM development at SK Hynix.

HBM4 is the sixth generation of HBM technology — a type of Dynamic Random Access Memory, or DRAM. DRAM can be found in personal computers, workstations and servers and is used to store data and program code.

SK Hynix’s latest HBM4 product has doubled bandwidth and increased power efficiency by 40% compared to the previous generation, according to the company.  

Notably, HBM4 is expected to be the main AI memory chip needed for Nvidia’s next-generation Rubin architecture — a more powerful AI chip for global data centers — said Dan Nystedt, vice-president at TriOrient, an Asia-based private investment firm with a focus on semiconductors.

“SK Hynix is a key supplier for Nvidia, and the announcement shows it remains far ahead of rivals,” he said.

Samsung Electronics and Micron have struggled to catch up to SK Hynix in HBM, as it builds on its segment leadership and benefits from being Nvidia’s main HBM supplier. 

However, the companies have made some progress. Micron has also shipped samples of its HBM4 products to customers, while Samsung has reportedly been working to get its HBM4 chips certified by Nvidia. 

“Despite the shifting competitive landscape, we anticipate SK Hynix will maintain a commanding position, potentially securing around 50% of the HBM market share by 2026,” said MS Hwang, research director at Counterpoint Research, covering memory solutions.

SK Hynix shares rose more than 7% Friday to hit their highest since 2000, following its chip announcement, bringing year-to-date gains to nearly 90%. Shares of Samsung Electronics and Micron have risen over 40% and nearly 80% in 2025, respectively.

SK Hynix posted record operating profit and revenue for its June-quarter, thanks to strong HBM demand, which accounted for 77% of its overall revenues. The company’s market capitalization has increased by more than $80 billion since the start of the year, according to data from S&P Capital IQ.

The firm expects to double HBM sales for the full year compared to 2024, and for demand from AI to continue to grow into 2026.

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OpenAI announces new mentorship program for budding tech founders

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OpenAI announces new mentorship program for budding tech founders

Dado Ruvic | Reuters

OpenAI on Friday introduced a new program, dubbed the “OpenAI Grove,” for early tech entrepreneurs looking to build with artificial intelligence, and applications are already open.

Unlike OpenAI’s Pioneer Program, which launched in April, Grove is aimed towards individuals at the very nascent phases of their company development, from the pre-idea to pre-seed stage.

For five weeks, participants will receive mentoring from OpenAI technical leaders, early access to new tools and models, and in-person workshops, located in the company’s San Francisco headquarters.

Roughly 15 members will join Grove’s first cohort, which will run from Oct. 20 to Nov. 21, 2025. Applicants will have until Sept. 24 to submit an entry form.

CNBC has reached out to OpenAI for comment on the program.

Following the program, Grove participants will be able to continue working internally with the ChatGPT maker, which was recent valued $500 billion.

Other industry rivals have also already launched their own AI accelerator programs, including the Google for Startups Cloud AI Accelerator last winter. Earlier this April, Microsoft for Startups partnered with PearlX, a cohort accelerator program for pre-seed companies.

Nurturing these budding AI companies is just a small chip in the recent massive investments into AI firms, which ate up an impressive 71% of U.S. venture funding in 2025, up from 45% last year, according to an analysis from J.P. Morgan.

AI startups raised $104.3 billion in the U.S. in the first half of this year, and currently over 1,300 AI startups have valuations of over $100 million, according to CB Insights.

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Benioff says he’s ‘inspired’ by Palantir, but takes another jab at its prices

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Benioff says he's 'inspired' by Palantir, but takes another jab at its prices

Salesforce CEO Marc Benioff on what the market is getting wrong about AI

Marc Benioff is keeping an eye on Palantir.

The co-founder and CEO of sales and customer service management software company Salesforce is well aware that investors are betting big on Palantir, which offers data management software to businesses and government agencies.

“Oh my gosh. I am so inspired by that company,” Benioff told CNBC’s Morgan Brennan in a Tuesday interview at Goldman Sachs‘ Communacopia+Technology conference in San Francisco. “I mean, not just because they have 100 times, you know, multiple on their revenue, which I would love to have that too. Maybe it’ll have 1000 times on their revenue soon.”

Salesforce, a component of the Dow Jones Industrial Average, remains 10 times larger than Palantir by revenue, with over $10 billion in revenue during the latest quarter. But Palantir is growing 48%, compared with 10% for Salesforce.

Benioff added that Palantir’s prices are “the most expensive enterprise software I’ve ever seen.”

“Maybe I’m not charging enough,” he said.

Read more CNBC tech news

It wasn’t Benioff’s first time talking about Palantir. Last week, Benioff referenced Palantir’s “extraordinary” prices in an interview with CNBC’s Jim Cramer, saying Salesforce offers a “very competitive product at a much lower cost.”

The next day, TBPN podcast hosts John Coogan and Jordi Hays asked for a response from Alex Karp, Palantir’s co-founder and CEO.

“We are very focused on value creation, and we ask to be modestly compensated for that value,” Karp said.

The companies sometimes compete for government deals, and Benioff touted a recent win over Palantir for a U.S. Army contract.

Palantir started in 2003, four years after Salesforce. But while Salesforce went public in 2004, Palantir arrived on the New York Stock Exchange in 2020.

Palantir’s market capitalization stands at $406 billion, while Salesforce is worth $231 billion. And as one of the most frequently traded stocks on Robinhood, Palantir is popular with retail investors.

Salesforce shares are down 27% this year, the worst performance in large-cap tech.

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Salesforce and Palantir year to date stock chart.

We're seeing an incredible transformation in enterprise, says Salesforce CEO Marc Benioff

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Gemini, the Winklevoss’ crypto exchange, pops more than 40% in Nasdaq debut

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Gemini, the Winklevoss' crypto exchange, pops more than 40% in Nasdaq debut

Gemini Co-founders Tyler Winklevoss and Cameron Winklevoss attend the company’s IPO at the Nasdaq MarketSite in New York City, U.S., Sept. 12, 2025.

Jeenah Moon | Reuters

Shares of Gemini Space Station soared more than 40% on Thursday after the exchange operator raised $425 million in an initial public offering.

The stock opened at $37.01 on the Nasdaq after its IPO priced at $28. At one point, shares traded as high as $40.71.

The New York-based company priced its IPO late Thursday above this week’s expected range of $24 to $26, and an initial range of between $17 and $19. That valued the company at some $3.3 billion before trading began.

Gemini, which primarily operates as a cryptocurrency exchange, was founded by the Winklevoss brothers in 2014 and held more than $21 billion of assets on its platform as of the end of July. Per its registration with the Securities and Exchange Commission, Gemini posted a net loss of $159 million in 2024, and in the first half of this year, it lost $283 million.

The company also offers a U.S. dollar-backed stablecoin, credit cards with a crypto-back rewards program and a custody service for institutions.

Gemini co-founders Tyler & Cameron Winklevoss: Bitcoin is gold 2.0, can easily go 10x from here

The Winklevoss brothers were among the earliest bitcoin investors and first bitcoin billionaires. They have long held that bitcoin is a superior store of value than gold. On Friday morning, they told CNBC’s “Squawk Box” they see its price reaching $1 million a decade from now.

In 2013, they were the first to apply to launch a bitcoin exchange-traded fund, more than 10 years before the first bitcoin ETFs would eventually be approved. The Securities and Exchange Commission’s rejection of the application, which cited risk of fraud and market manipulation, set the stage for the bitcoin ETF debate in the years to come.

Even in the early days, when bitcoin was notorious for its extreme volatility and anti-establishment roots and shunned by Wall Street, the Winklevoss brothers were outspoken about the need for smart regulation that would establish rules for the crypto-led financial revolution.

Don’t miss these cryptocurrency insights from CNBC Pro:

(Learn the best 2026 strategies from inside the NYSE with Josh Brown and others at CNBC PRO Live. Tickets and info here.)

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