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OpenAI CEO Sam Altman (L) speaks with Microsoft Chief Technology Officer and Executive VP of Artificial Intelligence Kevin Scott during the Microsoft Build conference at Microsoft headquarters in Redmond, Washington, on May 21, 2024. 

Jason Redmond | AFP | Getty Images

Investors can’t get enough of artificial intelligence, despite worries over the sector’s excessively high valuations.

The S&P 500, Dow Jones Industrial Average and Nasdaq Composite rose Tuesday stateside, with all three notching new intraday highs. The major averages were juiced by gains in tech. Nvidia popped nearly 5%, while Microsoft climbed roughly 2%.

Both Apple and Microsoft reached a market capitalization of over $4 trillion after their shares rose. It was the first time Apple hit that milestone, though it closed just shy of that level.

Tech companies can’t get enough of each other, either.

Nvidia announced a $1 trillion investment in Nokia, which the Finnish company said will go toward developing its AI plans. For those, like me, who remember Nokia as a company that made the most desirable and bullet-proof phones: It primarily produces cellular equipment now.

Meanwhile, with its 27% stake in OpenAI’s for-profit business, Microsoft is potentially sitting on a goldmine — provided AI finds its footing as a sustainable, revenue-generating business in the long run. OpenAI on Tuesday announced it had completed its restructuring as a nonprofit with a controlling stake in its for-profit arm.

It’s not just Microsoft. Investors who have poured money into tech could potentially gain big — as Cathie Wood of Ark Invest says, “If our expectations for AI … are correct, we are at the very beginning of a technology revolution.”

What you need to know today

And finally…

Jerome Powell, chairman of the US Federal Reserve, during the International Monetary Fund (IMF) and World Bank Fall meetings at the IMF headquarters in Washington, DC, US, on Thursday, Oct. 16, 2025.

Kent Nishimura | Bloomberg | Getty Images

The Fed has a rate cut plus a bunch of other things on its plate this week. Here’s what to expect

Markets are assigning a nearly 100% probability that the Federal Open Market Committee will approve a second consecutive quarter percentage point, or 25 basis point, reduction in the federal funds rate. The overnight lending benchmark is currently targeted between 4%-4.25%.

Beyond that, policymakers are likely to debate, among other things, the future path of reductions, the challenges posed by a lack of economic data and the timetable for ending the reduction in the Fed’s asset portfolio of Treasurys and mortgage-backed securities.

— Jeff Cox

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We’re putting an AI giant in the Bullpen — not letting a mistake cloud our judgment

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We're putting an AI giant in the Bullpen — not letting a mistake cloud our judgment

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Space stocks rocket higher as sector optimism gains steam into 2026

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Space stocks rocket higher as sector optimism gains steam into 2026

Firefly’s CEO Jason Kim reacts during the company’s IPO at the Nasdaq MarketSite in New York City, U.S., August 7, 2025.

Jeenah Moon | Reuters

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Last week’s liftoff also coincided with President Donald Trump‘s “space superiority” executive order, signed on Friday, that aims to create a permanent U.S. base on the moon.

Investors have also gained more clarity on the future of NASA following a whirlwind drama since Trump won the election.

Last week, the Senate confirmed Jared Isaacman as NASA administrator more than a year after he was first nominated to the position.

Trump withdrew the nomination from the Elon Musk ally earlier this year amid a public fallout, but renominated Isaacman in November.

Transportation Secretary Sean Duffy was tapped to temporarily run the space agency in the interim.

Neuberger Berman's Dan Hanson talks a possible SpaceX IPO

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Alphabet to acquire data center and energy infrastructure company Intersect

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Alphabet to acquire data center and energy infrastructure company Intersect

Alphabet to acquire data center and energy infrastructure company Intersect

Google parent Alphabet on Monday announced it will acquire Intersect, a data center and energy infrastructure company, for $4.75 billion in cash in addition to the assumption of debt.

Alphabet said Intersect’s operations will remain independent, but that the acquisition will help bring more data center and generation capacity online faster.

In recent years, Google has been embroiled in a fierce competition with artificial intelligence rivals, namely OpenAI, which kick-started the generative AI boom with the launch of its ChatGPT chatbot in 2022. OpenAI has made more than $1.4 trillion of infrastructure commitments to build out the data centers it needs to meet growing demand for its technology.

With its acquisition of Intersect, Google is looking to keep up.

“Intersect will help us expand capacity, operate more nimbly in building new power generation in lockstep with new data center load, and reimagine energy solutions to drive US innovation and leadership,” Sundar Pichai, CEO of Google and Alphabet, said in a statement.

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Google already had a minority stake in Intersect from a funding round that was announced last December. In a release at the time, Intersect said its strategic partnership with Google and TPG Rise Climate aimed to develop gigawatts of data center capacity across the U.S., including a $20 billion investment in renewable power infrastructure by the end of the decade.

Alphabet said Monday that Intersect will work closely with Google’s technical infrastructure team, including on the companies’ co-located power site and data center in Haskell County, Texas. Google previously announced a $40 billion investment in Texas through 2027, which includes new data center campuses in the state’s Haskell and Armstrong counties.

Intersect’s operating and in-development assets in California and its existing operating assets in Texas are not part of the acquisition, Alphabet said. Intersect’s existing investors including TPG Rise Climate, Climate Adaptive Infrastructure and Greenbelt Capital Partners will support those assets, and they will continue to operate as an independent company.

Alphabet’s acquisition of Intersect is expected to close in the first half of 2026, but it is still subject to customary closing conditions.

WATCH: Here’s what’s happening to electricity bills in states with the most data centers

Here's what's happening to electricity bills in states with the most data centers

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