Microsoft‘s massive investment in OpenAI has put the company at the center of the artificial intelligence boom. But it’s not the only place where the software giant is opening its wallet to meet the surging demand for AI-powered services.
CNBC has learned from people with knowledge of the matter that Microsoft has agreed to spend potentially billions of dollars over multiple years on cloud-computing infrastructure from startup CoreWeave, which announced on Wednesday that it raised $200 million. That financing comes just over a month after the company attained a valuation of $2 billion.
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CoreWeave sells simplified access to Nvidia’s graphics processing units, or GPUs, which are considered the best available on the market for running AI models. Microsoft signed the CoreWeave deal earlier this year in order to ensure that OpenAI, which operates the viral ChatGPT chatbot, will have adequate computing power going forward, said one of the people, who asked not to be named due to confidentiality. OpenAI relies on Microsoft’s Azure cloud infrastructure for its hefty compute needs.
Microsoft and CoreWeave both declined to comment.
The generative AI rush began late last year after OpenAI introduced ChatGPT to the public, demonstrating that AI can take human input and produce sophisticated responses. Many companies, including Google, have since rushed to add generative AI into their products. And Microsoft has been busy releasing chatbots for its own services, such as Bing and Windows.
With so much demand for its infrastructure, Microsoft needs additional ways to tap Nvidia’s GPUs. CoreWeave CEO Michael Intrator declined to comment about the Microsoft deal in an interview last month, but he said revenue has “gone up by many multiples from 2022 to 2023.”
Nvidia-backed startup Coreweave is based in Roseland, New Jersey, with 160 employees.
CoreWeave
CoreWeave’s announced funding on Wednesday from hedge fund Magnetar Capital was an extension of a $221 million round in April. Nvidia invested $100 million in the prior financing, Intrator said. CoreWeave was founded in 2017 and has 160 employees.
Nvidia’s stock price is up 170% this year. The company’s market cap briefly topped $1 trillion for the first time this week after it issued a forecast for the July quarter that was over 50% higher than Wall Street estimates.
The chipmaker’s growth will “largely be driven by data center, reflecting a steep increase in demand related to generative AI and large language models,” Colette Kress, Nvidia’s finance chief, said on last week’s earnings call. OpenAI’s GPT-4 large language model, trained with Nvidia GPUs on extensive online data, is at the core of ChatGPT.
Kress referred to CoreWeave by name on the call, and in March, Nvidia CEO Jensen Huang mentioned CoreWeave in his presentation at Nvidia’s GTC conference.
CoreWeave’s website claims the company can deliver computing power that’s “80% less expensive than legacy cloud providers.” Among other cards, CoreWeave offers Nvidia’s A100 GPUs, which developers can also find through the Amazon, Google and Microsoft clouds.
In addition, CoreWeave has available less expensive Nvidia A40 GPUs that are marketed for visual computing, while the A100 targets AI, data analytics and high-performance computing. Some CoreWeave clients have struggled to obtain enough GPU power on big clouds, Intrator said. At times prospects have asked for A100 or newer H100 GPUs from Nvidia, and the company has instead recommended A40 GPUs.
These “will do an excellent job at a very cost-effective price,” Intrator said.
Microsoft has had discussions with Oracle about the two companies renting servers from each other if they need added capacity, The Information reported earlier this month, citing an unnamed person.
Federal Reserve Chair Jerome Powell reacts while speaking during a press conference following the Federal Open Markets Committee meeting at the Federal Reserve on Dec. 10, 2025 in Washington, DC.
Chip Somodevilla | Getty Images
It ended up being a “hawkish cut,” as expected. Still, investors managed to find a few gifts tucked betweenthe lumps of coal.
Even though the U.S. Federal Reserve lowered interest rates on Wednesday stateside, two regional bank presidents — Jeffrey Schmid of Kansas City and Austan Goolsbee of Chicago — wanted rates to stand pat.
Their cautioned was echoed in the Fed’s “dot plot” of rate projection, which showed officials penciling in just one cut in 2026 and another for 2027.
Even the Fed’s rate statement was repurposed from the December 2024 meeting, which ushered in a nine-month period without cuts until September this year.
Why, then, did U.S. markets rise after the meeting?
The biggest surprise was the Fed’s announcement that it would begin purchasing $40 billion in Treasury bills, starting Friday. That move increases the money supply in the economy. In other words, it’s a stealthy way to ease conditions, which helps support financial markets.
Next, Chair Jerome Powell dismissed speculation about future hikes.
“I don’t think that a rate hike … is anybody’s base case at this point,” Powell said. “I’m not hearing that.”
Fed officials also see the U.S economy as remaining resilient. Collectively, they increased their forecast for economic expansion in 2026 to 2.3% from an earlier estimate of 1.8% in September.
“We have an extraordinary economy,” said Powell.
And the markets may be setting up for an extraordinary finish to the year.
“The last interest rate decision of 2025 has essentially paved the way for a Santa Claus rally to end the year, and the S&P 500 is poised to exceed the 7,000 milestone in the next few weeks,” said José Torres, senior economist at Interactive Brokers.
For investors, that would count as a very decent Christmas surprise.
— CNBC’s Jeff Cox contributed to this report.
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And finally…
U.S. President Donald Trump delivers remarks on the U.S. economy and affordability at the Mount Airy Casino Resort in Mount Pocono, Pennsylvania, U.S. Dec. 9, 2025.
U.S. President Donald Trump has once again provoked outrage among his European allies, describing them as “weak” in an interview with Politico published Tuesday. Criticizing the region’s response to the war in Ukraine, Trump said: “I think they don’t know what to do.”
That comment will be jarring for Europe after its efforts to support Ukraine — efforts which Trump has frequently downplayed. Instead, Europe has had to watch on as U.S. officials have held talks with their Russian and Ukrainian counterparts on a draft peace plan for Ukraine, without a seat at the table.
A newly proposed exchange-traded fund would offer exposure to bitcoin, much like other popular ETFs tracking the world’s oldest cryptocurrency. But, there’s a twist: The fund would trade bitcoin-linked assets while Wall Street sleeps.
The Nicholas Bitcoin and Treasuries AfterDark ETF aims to purchase bitcoin-linked financial instruments after the U.S. financial markets close, and exit those positions shortly after the U.S. market re-opens each day, according to a December 9 filing to the Securities and Exchange Commission.
The fund would not hold bitcoin directly. Instead, the AfterDark ETF would use at least 80% of the value of its assets to trade bitcoin futures contracts, bitcoin exchange-traded products and ETFs, and options on those ETFs and ETPs.
The offering would capitalize on bitcoin’s outsized gains in off-hours trading.
Hypothetically, an investor who had been buying shares of the iShares Bitcoin Trust ETF (IBIT) when U.S. markets formally close, and selling them at the next day’s open, would have scored a 222% gain since January 2024, data from wealth manager Bespoke Investment Group shows. But an investor that had bought IBIT shares at the open and sold them at the close would have lost 40.5% in the same time.
Bitcoin was last trading at $92,320, down nearly 1% on the day. The leading cryptocurrency is down about 12% over the past month and little changed since the beginning of the year.
The proposed ETF underscores jockeying among sponsors to launch ETFs tracking all kinds of cryptocurrencies, from altcoins like Aptos and Sui to memecoins such as Bonk and Dogecoin. The contest has only accelerated under President Donald Trump, who has pushed the SEC and Commodity Futures Trading Commission to soften their stances on token issuers and digital asset exchanges.
Since being approved under the prior administration in January 2024, more than 30 bitcoin ETFs have begun trading in the U.S., according to data from ETF.com.
Chuck Robbins, chief executive officer of Cisco, participates in a Bloomberg interview at the World Economic Forum in Davos, Switzerland, on Jan. 17, 2024.
Stefan Wermuth | Bloomberg | Getty Images
Few companies were as hot in early 2000 as Cisco, whose networking equipment served as the backbone of the internet boom.
On Wednesday, Cisco’s stock surpassed its dot-com peak for the first time. The shares rose almost 1% to $80.25, topping their prior split-adjusted record or $80.06 reached on March 27, 2000. That’s the same day that Cisco passed Microsoft to become the most valuable publicly traded company in the world.
Back then, investors saw Cisco as a way to bet on the growth of the web, as companies that wanted to get online relied upon the hardware maker’s switches and routers. But following a half-decade boom, the dot-com bubble burst just after Cisco reached its zenith, a collapse that wiped out more than three-quarters of the Nasdaq’s value by October 2002.
While the market swoon eliminated scores of internet highflyers, Cisco survived the upheaval. Eventually it started to grow and expand, diversifying through a series of acquisitions like set-top box maker Scientific- Atlanta in 2006, followed by software companies including Webex, AppDynamics, Duo and Splunk.
With its gains on Wednesday, Cisco’s market cap sits at $317 billion, making it only the 13th most valuable U.S. tech company. In recent years, the stock has badly trailed tech’s megacaps, which have been at the center of the new boom surrounding artificial intelligence.
The AI market has reached a level of euphoria that many analysts have compared to the dot-com era. Instead of Cisco, the modern infrastructure winner is Nvidia, whose AI chips are at the heart of model development and are relied up by the other major tech companies that are all building out AI-focused data centers. Nvidia has a market cap of $4.5 trillion, roughly 14 times Cisco’s current value.
But Cisco is angling to benefit from the AI craze, with CEO Chuck Robbins in November touting $1.3 billion in quarterly AI infrastructure orders from large web companies. Total revenue approached $15 billion, which was up 7.5% year over year, compared with 66% growth in 2000.
Shares of Cisco are up about 36% so far in 2025, outperforming the Nasdaq, which has gained about 22% over the same period.