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Top Stocks Making Big Moves Midday: SpaceX, Lumentum, Diamondback Energy, J.B. Hunt & More

Major stocks moved sharply mid-day, with AI infrastructure firms CoreWeave and Nebius surging, SpaceX climbing on a new rocket test, and energy names like Diamondback Energy and Occidental Petroleum dropping after weak inventory data.

Market Insider

Market Insider

Top Stocks Making Big Moves Midday: SpaceX, Lumentum, Diamondback Energy, J.B. Hunt & More

Here are some of the companies making headlines in midday trading. Artificial intelligence infrastructure – Shares of companies involved in the AI buildout jumped following several losing sessions. AI cloud computing play CoreWeave jumped more than 4% and Nebius rose nearly 5%, putting both stocks on track to snap a five-day slide. Photonics plays Lumentum and Coherent rose 8% and 6%, respectively, while Dell advanced 5%. SpaceX – Shares of Elon Musk’s rocket company advanced 5%. SpaceX announced the next test for its Starship rocket, set for launch Sept. 22. In this flight, the company also plans to deploy Starlink V3 satellites. Honeywell Technologies – The developer of automation solutions jumped almost 3%. In a presentation at Morgan Stanley’s Laguna Industrials Conference, leadership said that strong second-quarter orders and a solid start to the third quarter are supporting a favorable setup heading into year end and 2027. FTAI Aviation – The supplier of aircraft engines added 5% after announcing that its board approved a $500 million share buyback program. SK Hynix, Intel — The chipmakers rose after a Reuters report that SK Hynix was in talks with Intel to manufacture memory chips in the U.S. for the first time. SK Hynix added 2%, while Intel jumped 5%. SK Hynix said that no decisions have been made regarding any partnership with Intel. J.B. Hunt Transport Services — Shares of the transportation and logistics company slid nearly 13% after the company warned that its earnings may tumble in the third quarter between 5% to 10%, compared to the previous three-month period. J.B. Hunt said the decline has been due to internal adjustments to account for rising rates of purchase transportation. Expedia — The online travel company slipped about 1% after Morgan Stanley downgraded the stock to underweight. Analysts at the bank said shares have a weak risk/reward profile, particularly with greater exposure to a potentially weaker consumer. Energy stocks — U.S. oil prices fell more than 3% after a report said energy inventories rose last week, sending energy stocks lower. Diamondback Energy declined 8%, while Occidental Petroleum was off 5%. ExxonMobil lost nearly 3%, and Devon Energy dropped 4%. —CNBC’s Nick Wells and Darla Mercado contributed reporting.

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Technologies

Apple and Meta team up to make Muse AI model run on Mac computers

Apple and Meta are collaborating to make Muse Spark Open easier to run locally on clustered Mac Studio systems, according to the companies.

Tim Cook and Mark Zuckerberg have clashed for years, but with John Ternus taking the reins at Apple

Meta

The collaboration centers on Muse Spark Open, the most capable open-weight model released under a license that allows for limited commercial use, according to Meta. It’s an 816-billion-parameter model using a so-called mixture-of-experts architecture. As an open-weight model, developers can download the technology’s parameters, or weights, from the internet and run the model on a wide range of hardware.

Customers will be able to pair between two and four Mac Studio PCs to use Muse Spark to code, analyze video or do other agentic work. The model runs locally, instead of in the cloud, adding a layer of security and saving users money, the companies said.

Thursday’s announcement, following months of collaboration, is a sign that the AI boom has shifted historical alliances in Silicon Valley. For years, Apple and Meta regarded each other warily and avoided public partnerships, and the relationship hit rock bottom after Apple introduced privacy changes in 2021 that limited the targeting capabilities of digital ad companies.

Meta estimated in early 2022 that the change would cut its revenue that year by $10 billion.

Representatives from Apple and Meta declined to say if the Muse Spark Open collaboration was the start of a deeper relationship.

Zuckerberg posted a picture on X showing the Meta agent working on a Mac computer. He wrote, “Muse Spark Open — weights releasing today — runs great on new Mac Studios thanks to work with @johnternus and Apple.”

Ternus responded, “Congrats to the team! Amazing to run a model of Muse Spark Open’s caliber and scale this efficiently, right from your desk. Mac Studio keeps pushing the boundaries of on-device AI!”

Meta AI chief Alexandr Wang said in an interview that many powerful open-weight models are too big to be run on the majority of personal computers, but Apple’s Mac Studios make enough memory available to users so that it’s practical to run Muse Spark Open.

The move represents an important show of confidence in Meta’s rebooted AI efforts and could pose a challenge to OpenAI and Anthropic. It could also signal Apple’s growing strength in AI chips, a market that Nvidia

″We worked with Apple to bring leading Agent capabilities to your desktop for the first time on the Apple M5 Ultra Mac Studios, so you know we’re really excited about this,” Wang said. Developers can download a version of the AI model from websites like Hugging Face without extra configuration for Apple’s silicon.

Muse Spark Open has also been tuned to run faster on Apple’s hardware, and the iPhone maker revealed new benchmarks for its chips and published technical documentation about its MLX AI framework’s ability to split open-source models across multiple machines.

Mac Studios aren’t cheap though, and this AI model requires the fastest Apple chips and as much memory as possible.

Currently, a Mac Studio with the required M5 Ultra chip and 256GB of memory costs at least $10,799. A more expensive version with 512GB of RAM will be released later this month.

Plus, users will need to buy multiple machines.

Common ground on open source

The two companies are collaborating on open-source AI, which has become a point of contention in Washington as politicians worry that free Chinese models could undercut American AI.

Although Meta once centered its AI strategy on its older open-weight Llama family of models, it has since focused on creating proprietary models under the leadership of Wang, who joined Meta when the company invested more than $14 billion into his former startup Scale AI last year.

While Apple and Meta, then known as Facebook, partnered on iPhone extensions over a decade ago, they haven’t struck any public partnerships since 2017 after Apple removed system-level Facebook integration from the iPhone.

“Most of the animosity predates my tenure at the company, but obviously there’s been a long history between Meta and Apple,” Wang said, pointing to one member of his team, AI researcher and former Apple director Daniel Gross, as a reason for the collaboration. Gross, along with former GitHub CEO Nat Friedman, was a major Zuckerberg hire last year as the Facebook founder was overhauling his company’s AI strategy.

Their leaders have also traded harsh words.

Cook, who was Apple CEO until Ternus succeeded him last month, took a shot at Zuckerberg in 2018, during the Cambridge Analytica scandal, saying, “I wouldn’t be in this situation.” Cook often criticized Meta for compromising user privacy.

Ternus, a hardware engineer, has already started changing things at Apple, including when it releases products.

And Meta’s developers haven’t been able to resist Apple’s products. The company bought hundreds of Mac computers so its Superintelligence team could experiment with local AI and agents earlier this year.

Apple’s multiple partners

Meta is just the latest AI model developer to team up with Apple.

In 2024, Apple announced a partnership with OpenAI to integrate ChatGPT into Siri, although the integration “dramatically underperformed” and didn’t lead to OpenAI user growth, OpenAI said in a filing that’s part of a legal dispute with Elon Musk’s xAI. Apple sued OpenAI in July, alleging trade secret theft, a claim OpenAI denied.

Earlier this year, Apple announced a deal with Google

Still, Apple’s AI strategy has drawn criticism from investors and customers in part because its new version of Siri, released last month, isn’t as advanced as chatbots and agents from leading labs.

Meanwhile, Meta has bet big on becoming a leading lab but has struggled to keep up with the competition and its business remains almost entirely reliant on ads. Recent developments, such as Meta’s Muse personal agent app and its latest proprietary foundation model, Muse Wonder, released earlier this week, have begun to excite investors who are optimistic about new AI business opportunities.

Open source remains part of Zuckerberg’s AI strategy. In August, Meta debuted a small open-weight AI model dubbed Muse Glimmer, with Zuckerberg pledging to eventually release something bigger and more powerful.

Muse Spark Open isn’t as advanced as Muse Wonder, a proprietary offering, but Wang said it’s good enough to potentially entice more coders to upgrade.

“These aren’t the most capable models that we’ve developed or released,” Wang said. “But we think that there will be a lot of companies and developers who sort of use this model and tinker with it at small scale and then seek to ramp up and scale up their usage.”

WATCH: Apple makes its biggest smart-home push yet under CEO John Ternus.

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Technologies

CoreWeave credit default swaps hit distress levels as investors sour on AI debt

Signs of distressed deepened in CoreWeave on Thursday.

CoreWeave’s credit stress continued to spiral on Thursday amid a broader sell-off in AI-related names.

CoreWeave — a so-called neocloud company — has taken on more than $51 billion of debt and obligations to finance its AI infrastructure build-out. It’s now facing a rebellion from stock and bond investors as concerns mount about AI overspending and debt levels.

Yields on CoreWeave debt have continued to climb, with the yield to maturity on its 9.75% bond due in 2031 reaching 15.78%. Bond yields move inversely to prices. Meanwhile, the spread on its five-year credit default swaps, which are insurance against default, at one point soared above 1,140 basis points. It last stood at nearly 1,038 bps — a 16% week-over-week jump and 164% higher than a year ago.

Credit concerns are spreading into AI equities too. CoreWeave’s stock dropped during trading Thursday before recovering and closing 5.94% higher. The moved followed Wednesday’s 15.5% nosedive.

Other neocloud stocks were under similar pressure. Nebius also sank before climbing higher to close 1.29% and and Iren ultimately ended the day down less than 1%.

Anxiety about AI overspending is also spreading. For instance, shares of Micron Technology and Advanced Micro Devices sold off following a big sell-off in South Korean chip stocks. Micron closed up 1.87%, while AMD fell 1.5%.

While AI debt worries have been rising steadily, investors have suddenly grown skittish about the underlying finances of companies borrowing heavily to buy chips, build data centers, and rent out computing power.

Coreweave’s credit default swaps are one place to see that stress.

Credit default swaps are contracts where buyers pay for protection in case the borrower can’t repay its debt. The spread widening in CoreWeave’s CDS means investors view the debt as riskier.

The market is “basically saying ‘no mas’ to AI debt without operating cash flow support,” the Evercore ISI trading desk said.

A spread level of 1,000 basis points or above is generally a sign of credit distress, said Gavan Nolan, executive director of fixed income pricing at S&P Global Market Intelligence.

No one is questioning whether demand for CoreWeave’s services is real, since the company has contracts with all the big hyperscalers, Nolan said. The question is whether the cash flows will ultimately arrive.

“It’s obviously heavily negative free cash flow at the moment, and it needs that cash flow to arrive really to justify all the capex that it’s spending,” Nolan said.

‘Self-fulfilling prophecy’

CEO Mike Intrator dismissed the market moves on Wednesday, according to a memo obtained by CNBC.

“When you are building a new type of technology company there will be periods of time when the market misunderstands and acts irrationally,” he wrote. “We are confident in our backlog which more than supports all of our debt obligations.”

The backlog is over $100 billion, with around two-thirds of it with investment-grade counterparts including Microsoft, Meta, IBM and Caterpillar, Deutsche Bank said in a note Thursday. The firm reiterated its buy-rating on the stock Wednesday, calling the dislocation a buying opportunity.

“The problem is this kind of concern can prove to be a self-fulfilling prophecy, and risks triggering broader issues in other AI-related names,” said Jim Reid, global head of macro and thematic research.

Domino effects may already be happening. Oracle’s five-year CDS spread also spiked this week. It was last at 282 basis points, a roughly 10% increase in one week.

“A downgrade from its BBB rating would risk pressuring IG-only investors into forced sales,” Reid said.

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Technologies

Netflix Chief Content Officer Bela Bajaria is leaving, will be replaced by Peter Rice

Netflix announced Bela Bajaria will be replaced by former Disney exec Peter Rice as the company’s chief content officer.

Netflix on Thursday announced Bela Bajaria will be replaced as the company’s chief content officer by former Disney exec Peter Rice, effective Oct. 26.

Rice most recently oversaw Disney’s cable channels, news programming and coverage of major sporting events.

“Peter is one of the most effective at-scale operators in the entertainment industry,” co-CEO Ted Sarandos said in a statement. “I’m excited to welcome him to Netflix as Chief Content Officer as we continue to scale and deliver members more of the stories they love.”

Before Rice was at Disney, he held roles 21st Century Fox and Fox Searchlight Pictures. Netflix in its announcement called him “one of the entertainment industry’s most respected creative executives.” In his new role, Rice will oversee the company’s global content organization, including scripted and unscripted series, film and live events.

″[Netflix has] shown again and again that they’re willing to take chances on distinctive voices and fresh ideas, and I’m excited to work with the team to help bring even more great stories to members everywhere,” he said in a statement.

Bajaria, who is leaving Netflix after nearly 10 years, most recently worked as the company’s global content team. She had been focused on the company’s live sports strategy, looking to create events out of buzzy games and tournaments.

“I’m incredibly grateful for everything she’s done to help Netflix entertain the world,” Sarandos said in a statement.

The announcement comes a day after Netflix instituted layoffs across its organization, eliminating approximately 6% of its workforce, or roughly 1,000 jobs.

The media company will report its next quarterly earnings on Tuesday.

This is breaking news. Please refresh for updates.

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