Anthropic Is About to Go Public and It's Already Moving Stocks You Probably Own

If you've been anywhere near financial Twitter or Reddit lately, you've probably seen Anthropic pop up in your feed more than once. And honestly, for good reason. The company behind Claude just filed confidentially for an IPO, raised $65 billion in its latest funding round, and is sitting at a valuation just under $1 trillion. That's not a typo. This private AI startup is worth almost as much as some of the biggest publicly traded companies in the world, and it hasn't even hit the stock market yet.

But here's the thing a lot of retail investors are sleeping on: you might already be invested in Anthropic without even knowing it. And the stocks tied to this company's rise are some of the most actively traded names in the market right now. Let's break it all down.

The $965 Billion Company You Can't Buy Yet

Anthropic just closed a $65 billion Series H funding round at a $965 billion post-money valuation, making it the most valuable private AI company in the world, officially surpassing OpenAI which sits at around $852 billion. The round was led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, with a ton of other institutional names piling in alongside them.

The company also just confidentially filed its IPO paperwork, which means a public debut could come as early as this fall. Revenue has been exploding too. Anthropic reported a $47 billion annualized revenue run rate earlier this month, up from $30 billion earlier in the year and $10 billion for all of last year. They're also on pace for their first profitable quarter ever. When a company goes from $10 billion in annual revenue to nearly $50 billion in run rate in one calendar year, that's the kind of growth that Wall Street loses its mind over.

So what does all of this mean for publicly traded stocks right now?

Amazon (AMZN): The Anthropic Play You Already Have Access To

If you want the closest thing to a direct Anthropic bet in the public market right now, Amazon is it. The company has invested $13 billion in Anthropic and has pledged up to another $20 billion as Anthropic hits commercial milestones. Amazon's stake before this latest funding round was worth roughly $60 billion, and after the new valuation, it could be more than double that.

This already showed up in Amazon's Q1 earnings in a big way. Amazon's net income surged 77% to $30.3 billion last quarter, but a significant chunk of that came from a $16.8 billion pre-tax gain from its Anthropic investment. To be clear, that's more than half of Amazon's total pre-tax income for the quarter just from the value increase on one private stake. And on top of that, AWS revenue grew 28% year over year with a $364 billion backlog that's only going to get bigger as Anthropic scales on their infrastructure.

Amazon agreed to let Anthropic spend $100 billion with AWS to train and run Claude models. That's a massive recurring revenue stream locked in for years. As Anthropic grows, so does AWS. It's basically a two-for-one trade at this point.

Alphabet (GOOGL): Quietly One of the Biggest Winners Here

Google has been quieter about its Anthropic relationship than Amazon, but the numbers don't lie. Alphabet committed up to $40 billion into Anthropic and has already deployed a significant chunk of that. Last quarter, Alphabet's profit jumped 81% to $62.6 billion, with a $36.9 billion equity gain driven largely by the Anthropic valuation markup. That figure was more than triple any prior quarterly gain from a single investment.

Beyond just holding the stake, Google Cloud signed a massive deal to provide Anthropic with 1 million specialized AI chips starting in 2026, worth tens of billions of dollars and delivering over a gigawatt of computing power. So Google is getting paid to support Anthropic's growth while also holding equity that appreciates every time Anthropic raises at a higher valuation. That's a nice spot to be in.

Alphabet stock has had a strong 2026 and the Anthropic relationship is a real reason to stay bullish on GOOGL heading into the second half of the year, especially as the IPO gets closer and that stake could eventually be monetized.

Microsoft (MSFT): The Interesting Wildcard

Microsoft is not an Anthropic investor. Their bet has been on OpenAI. But here's why MSFT still belongs in this conversation. Anthropic is expected to pay Amazon, Google, and Microsoft at least $80 billion combined to run Claude on their cloud servers through 2029. So even without equity exposure, Microsoft is going to see cloud revenue flowing from Anthropic's growth through Azure.

On top of that, today's news about Nvidia's new RTX Spark PC chip is a direct tailwind for Microsoft. The chip runs Windows for Arm and Microsoft co-developed it with Nvidia. Every RTX Spark laptop sold this fall is a new Windows device, which keeps Microsoft's ecosystem growing even as Mac and Qualcomm chips have been chipping away at market share.

Microsoft is up about 2% today on the Nvidia news alone. With both the Anthropic cloud deal and the PC chip catalyst in play, MSFT looks like one of the better risk-adjusted setups in the mega-cap space right now.

Micron (MU): The Silent Infrastructure Winner

This one flew under the radar but it's worth paying attention to. Micron was named as a strategic infrastructure partner in Anthropic's Series H round, meaning they didn't just invest money, they're embedded in the supply chain that makes Anthropic's AI run. Micron also recently crossed a $1 trillion market cap milestone, which shows just how much the market is pricing in AI memory demand.

Every time Anthropic scales up its model training or inference capacity, it needs memory chips. That's Micron's business. As Claude continues to grow from consumer applications to enterprise deployments, the memory demand behind it is only going one direction. MU is one of those picks that doesn't get talked about enough in the AI trade but sits right at the foundation of it.

The Bigger Picture

What's happening with Anthropic right now is one of the more interesting setups the AI trade has produced so far. You have a company that was practically an underdog two years ago now eclipsing OpenAI in valuation, filing for an IPO, growing revenue at a pace that even Wall Street analysts are struggling to model out, and pulling in some of the biggest names in institutional investing as backers.

The stocks around it, AMZN, GOOGL, MSFT, and MU, all have real and growing exposure to Anthropic's success. Some through equity stakes that are appreciating quarter over quarter. Some through cloud infrastructure contracts worth tens of billions. Some through chip supply relationships that only get more valuable as AI compute demand scales.

When Anthropic eventually goes public, there's going to be a lot of excitement and probably a lot of volatility. But the smarter play for most retail investors might be to position in the companies that are already winning from Anthropic's rise, before the IPO hype cycle kicks into full gear.

Keep an eye on AMZN and GOOGL earnings this cycle. The Anthropic stake markups have been real catalysts, and with the valuation now sitting at $965 billion ahead of a public debut, those unrealized gains are only getting bigger.