Datadog Wanted Upwind. Meta Wanted FuriosaAI. Both Stayed Independent.

Good morning, Mason here,

This week a lot of startups picked a fight with someone much bigger.

Upwind hit $3.8 billion while Datadog was reportedly circling.

FuriosaAI, which said no to Meta last year, is now worth about $2.9 billion.

A London chip startup with no shipping product raised roughly $774 million to go after Nvidia.

And a factory company run by a former Amazon executive raised $2.1 billion to compete with China.

Six deals. Six giants.

Read time: 5 mins

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FOLLOW THE MONEY

Upwind CEO and co-founder Amiram Shachar. Photo: Upwind

Upwind raised a $400 million Series C at a $3.8 billion valuation, led by Bessemer. Canapi came in new, and Cyberstarts, Greylock, Craft Ventures, Salesforce Ventures and Picture Capital came back.

The Datadog part is the story, and it's messy. On October 22, The Information reported that Datadog approached Upwind at a price close to its $3.8 billion valuation, and some outlets ran it as a nearly $4 billion offer. Calcalist says no formal offer was ever made. Either way, Upwind is staying independent. This isn't new, either. Back in 2025, Israeli outlets reported Datadog was in talks to buy it for about $1 billion.

Upwind protects cloud systems and AI agents while they're running, and it uses its own AI agents to check alerts and fix problems. Siemens, Roku and Carvana are customers. CEO Amiram Shachar co-founded it in 2022 after selling his last startup, Spot, to NetApp.

The speed is the risk. Upwind was worth $1.5 billion in January, so this is 2.5 times in under a year. It says revenue has quadrupled this year, but it hasn't shared the actual number.

FuriosaAI CEO June Paik with the company's RNGD chip. Photo: FuriosaAI

FuriosaAI raised a $620 million Series D, and several outlets put its valuation at about $2.9 billion. South Korea's National Growth Fund, Korea Development Bank, Naver, Kakao and Cisco's investment arm are all in.

Here's why it matters. In March 2025, Bloomberg and Korean media reported that FuriosaAI turned down an $800 million takeover offer from Meta. According to the Korean reports, the sticking point wasn't price. The two sides disagreed on strategy and structure after the deal.

The Seoul company makes RNGD, a chip built for running AI models rather than training them, and it's pitched as a cheaper, lower-power alternative to Nvidia. The new money goes into making more RNGD chips, building out its software and finishing its third-generation chip.

Saying no to Meta looks pretty good right now. The new price is more than three times that offer. What we still don't know is how much FuriosaAI is actually selling.

Fractile founder Walter Goodwin. Photo: Fractile

Fractile hasn't announced this round. But UK Companies House filings show the London startup issued about £577 million, roughly $774 million, of Series C shares between September and late October. In August, Bloomberg reported Fractile was raising at around $6.5 billion before the new money.

Its chips keep data right next to the parts doing the math instead of shuttling it back and forth to separate memory. That's meant to make running AI models much faster. Walter Goodwin co-founded it in 2022 with Yuhang Song, after an Oxford PhD.

The reason investors care is Anthropic. Bloomberg reported an initial deal for Fractile to supply about $250 million of chips to Anthropic, with room to grow.

Now the catch. Fractile hasn't shipped a production chip, hasn't disclosed revenue, and doesn't expect hardware in data centers until 2027. That's a lot of money riding on one early customer.

One of Re:Build's factories. Photo: Re:Build Manufacturing

Re:Build Manufacturing raised $2.1 billion led by General Catalyst and JPMorgan's Strategic Investment Group. It didn't share a valuation or say how much of it is equity.

It was founded in 2020 by Jeff Wilke, who used to run Amazon's whole consumer business, and Miles Arnone. It now has more than 2,100 employees and 2.4 million square feet of factory space, and it builds products for other companies, including in aerospace and defense. It calls itself America's answer to Shenzhen.

It also spins out its own startups. The best known is Slate Auto, the cheap, stripped-down electric pickup backed by Jeff Bezos's family office. Wilke's pitch is blunt: "The deindustrialization of America is an economic failure and national security risk."

The Northwood Space team at its factory. Photo: Northwood Space

Northwood Space raised a $375 million Series C at a $2 billion valuation, co-led by Andreessen Horowitz and DFJ Growth, plus a financing deal with HSBC. It raised a $100 million Series B just this January.

It builds the antennas and software that let satellites talk to the ground, a part of the industry that hasn't changed much in decades. CEO Bridgit Mendler co-founded it in 2022. Yes, the same Bridgit Mendler from Disney Channel.

The real proof is a contract worth nearly $50 million with the U.S. Space Force to upgrade its satellite control network. Revenue isn't public, so most of the $2 billion is a bet that a lot more of those contracts are coming.

Traversal's four co-founders. Photo: Traversal

Traversal raised $120 million at a $1 billion valuation, co-led by Kleiner Perkins, Redpoint and Khosla Ventures. It has now raised $173 million in total.

Its AI agent jumps in when software breaks. It maps how a company's systems connect, reads the logs and tracks down what actually caused the outage. Customers include Nubank, Harvey, PepsiCo and DigitalOcean.

The growth is the strong part. Traversal says its annual recurring revenue is up 9 times so far this year, and customers ran more than 150,000 investigations last quarter. As AI writes more code, more of it breaks. Traversal is selling the cleanup.

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THE PATTERN: PICK A GIANT

Six deals, and every one of them is aimed at someone much bigger.

FuriosaAI and Fractile are going after Nvidia. Upwind is now up against a company that tried to buy it. Re:Build is going after China's factories, Northwood after old ground station networks, and Traversal after the big monitoring companies.

Two of them already had the giant at the table. FuriosaAI said no to Meta, and Datadog has circled Upwind twice.

The proof is all over the place. Traversal says revenue is up 9 times this year. Upwind says it quadrupled. Northwood has a Space Force contract. Fractile has a reported $250 million deal with Anthropic but no shipping chip.

The pattern: turning down a buyer only looks smart if the next price is higher. For FuriosaAI it was, by more than three times. For Upwind, the new round came in right around where Datadog reportedly was.

For investors: Don't just ask who could buy the company.

Ask what it already turned down, and why.

Mason's take: Saying no to Meta looked crazy in 2025. FuriosaAI is now worth more than three times that offer, so I'll give the founders credit. The one I'd watch closest is Fractile. If the round priced near what Bloomberg reported, that's about $7 billion for a chip that hasn't shipped, riding mostly on one deal with Anthropic.

Founderscrowd Newsletter | Wednesday, November 4, 2026 | Pick a giant

$800M from Meta, rejected. $2.9B now. Datadog circled Upwind. It's worth $3.8B now.