Jensen Huang resigns as Nvidia CEO, and Thursday's winners are his rivals

Somewhere tonight a parent is at the kitchen table with a laptop and four browser tabs of Thanksgiving fares. She tells the assistant to just book the cheap United flight and go to bed. The assistant comes back with a polite refusal.

That was the small version of Thursday. The large version happened in Santa Clara, where the man who spent 33 years building the machines behind all of this packed up and went home. Here is who gained and who lost today, including one winner nobody expected and one loser who never saw a pink slip.

Jensen Huang resigns, and the money walks straight to his rivals

The statement goes out before the opening bell. Jensen Huang has resigned as Nvidia's chief executive, president and board member, and the board accepted it the night before. Colette Kress, the company's finance chief, becomes interim CEO while keeping her old job. Harvey Jones becomes the first chairman in Nvidia's history. The farewell line from the company: "Jensen's contributions to NVIDIA are profound."

Shareholders took it badly. The stock closed down more than 4 percent after touching its lowest point in a year, and roughly two trillion dollars of value has drained out of the company since early October. The money went looking for a substitute and found the neighbors: Broadcom rose about 5 percent on the day and AMD about 2. One analyst called them "natural beneficiaries in the short term."

The worst of it landed somewhere else. In early trading CoreWeave dropped 9 percent and Nebius 16 — companies that borrowed heavily to buy his chips and rent them out by the hour. Huang's own calendar got crowded too: the chair of the House Foreign Affairs Committee says he has agreed to testify as soon as next week, and a Senate committee has asked for December 3. The president called it "a horrible thing."

Here is what did not change on Thursday: not one chip. Nvidia is sold out through the end of next year, as one analyst pointed out, and those orders do not care who signs the letter to shareholders. The company reports earnings Tuesday, which is when we find out whether today was a mood or a turn. Meanwhile a far smaller company spent the day telling AI exactly what it may not touch.

United Airlines told your AI assistant it cannot buy the ticket

United spent Thursday building a fence around its booking page. The airline now bars third-party AI agents and autonomous assistants from buying or changing reservations — on its own site and app, and through travel agencies and fare comparison sites. The reason it gives is blunt: handing your login to a personal AI assistant "can expose sensitive information, and actions taken by these tools may result in unintended purchases, account changes, or use of MileagePlus miles."

So the robots keep their eyes and lose their hands. They can still compare fares and schedules; a person has to press buy. Which makes the surprising winner of the day the human travel agent — somebody with a phone, a login and a pulse, in a profession everyone assumed software had already finished off. Through the holidays, at United, the slow way is the only way that works.

Bank of America has warned its customers off the same habit. My guess is that airlines, banks and ticket sellers all end up in the same place by spring: a short list of approved robots with their own credentials, and a locked door for everyone else's. An assistant that acts on your behalf only works if the other side agrees to answer. Someone still has to write that software. Increasingly, nobody does.

Amazon shipped software its own engineers never read

Amazon released a free tool called the AWS Emulator, a stand-in for its cloud that runs on a laptop and covers hundreds of its services, so programmers can test their work without renting the real thing. The notable part is the authorship. "The emulator was written entirely by autonomous agents," a senior principal engineer at AWS said. "Our team hasn't written or reviewed any of the code."

Three squads of agents did it: one writing tests, one checking quality, one building and fixing, reviewing each other's work as they went. Amazon is careful to say it is not meant for production or security testing. Fair enough. But the review step — the thing a senior engineer does on a Tuesday afternoon, the thing a junior engineer learns from being corrected — went to the machines as well.

That is the day's quiet casualty: the apprenticeship. An Amazon executive put it this way the day before — the engineer's job is now to build the specs, the tests and the gates that decide when the agents' work is correct. Probably true. It is also a job with no obvious first rung. Which is a good moment to ask where the jobs are actually going.

Korea sold American AI firms the electricity American towns just voted down

In Seoul, Naver said Thursday it has signed a contract worth about $1.5 billion to sell computing power to an American AI company — roughly 20 megawatts of it, over four or five years. The buyer was not named. The finance chief says more than ten other customers outside Asia are in talks.

The site it will run on, built with Nvidia and Brookfield, opens at 55 megawatts in early 2027 and is meant to reach 200 by 2028. Naver's quarterly profit fell about a fifth paying for all this, and its chief executive calls the deal proof of "actual market demand." Across the Pacific, voters in 41 local elections on November 3 sided with restrictions on data centers in 40 of them, five of those outright bans.

The demand is American. The welcome, increasingly, is not. Those votes were about power bills, water, truck traffic and fields — ordinary, legitimate complaints. But if a county says no and a site outside Seoul says yes, the building goes up outside Seoul, and the construction work, the tax base and the leverage travel with it. That trade is being made one school-gym meeting at a time. The bill for the jobs, though, is landing somewhere else entirely.

Europe is cutting by the ten thousand while American layoffs stay rare

Thursday also brought a tally of Europe's cuts, and it reads like a list of a continent's biggest employers: Volkswagen heading toward 100,000 fewer workers by 2030, Deutsche Bahn shedding 30,000, with thousands more going at Barclays, Bosch and Telefónica's Spanish arm. The causes are tangled — weak demand, trade barriers, Chinese rivals — but automation runs through all of them, "particularly AI adoption in banking and insurance."

In America the same morning, new unemployment claims came in at 200,000, the ninth straight week at or below that line. Layoffs are rare and most workers enjoy unusual job security, the AP notes. And yet hiring has averaged about 86,000 a month this year. People are keeping their jobs. They are just not getting new ones.

So here is the surprising loser, and it isn't anybody who got fired. It is the person who was never hired. AI does not appear in the claims numbers, because a job that is never posted never produces a claim. Europe is doing this loudly, with restructuring plans and union meetings. America is doing it quietly, one unfilled opening at a time. Ask anyone graduating in May how the applications are going.

What Thursday added up to

One more winner, from a column most readers never check. UFORCE, the Ukrainian maker of sea drones, aerial drones and uncrewed ground vehicles, raised $700 million at a six billion dollar valuation, co-led by an American investor and Britain's own wealth fund, with a former NATO commander joining the board. The British defense secretary said his country "has gone from training Ukraine to being trained by Ukraine." Read that sentence twice.

Add it up and Thursday was not about chatbots. It was about who is allowed to act: software that may look but not buy, agents that may write code but not be corrected, towns that may vote and countries that will happily take the call instead. And the names at the top of that pile turn over faster than anyone plans for. A man ran the most important company in this business for 33 years and was gone before breakfast. Nvidia reports earnings Tuesday. Pull up a chair.