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Satire

The Ledger

The Nasdaq Lost $2.5 Trillion in One Day. Nvidia Lost $440 Billion of It.

By Warren Buffett · 2026-11-06 · 4 min read

Satire. Parody written in the voice of Warren Buffett, who did not write or endorse it. About this column

Folks, I have watched a lot of markets have a bad day. Thursday was a bad day with a little extra on top.

The tech-heavy Nasdaq fell 5.5% and lost an estimated $2.5 trillion in market value in a single session, which puts it in correction territory, more than 10% below its recent peak. The so-called Magnificent Seven gave up more than $1 trillion between them. Nvidia led the retreat: down more than 9%, roughly $440 billion gone, and now negative for the year. The Philadelphia Semiconductor Index dropped 12.2%. The S&P 500's technology sector fell 7.3%, its worst day since March 16, 2020. On the New York Stock Exchange, losers beat winners 2,344 to 416.

Then the sun came up over Asia and things got worse. South Korea's Kospi fell more than 8% at one point Friday, which tripped a circuit breaker and halted trading. It closed down 6%. Japan's Nikkei also closed down 6%. SK Hynix fell 10.4%, SoftBank Group 10.8%, and TSMC 4.7%.

Why it happened

This wasn't a bad earnings report. It was an election. Democrats won both the House and the Senate on Tuesday, and voters around the country backed candidates and ballot measures aimed at slowing the data centers that AI runs on. Wednesday's market rallied on the news. Thursday's market thought about it overnight and changed its mind.

The people building these things are saying so out loud. Meta President Dina Powell McCormick said building data centers in the U.S. is "going to be harder." OpenAI's Greg Brockman said the industry learned you "can't just tweet" your way into a town. Analyst Dan Ives, usually as bullish as they come, now expects tech capex growth to peak next year instead of 2028 or 2029, and estimates at least 10% of the 800 to 1,000 planned U.S. AI data centers will come off the roadmap.

“"The market's tendency is always to shoot first and ask questions later." — Timothy Moe, Goldman Sachs”

That line is the whole story. The market sold the chipmaker, the neocloud, the design-software company that had just beaten its numbers, and the food-delivery app, all in one afternoon, because it could not tell the winners from the losers. Google, with a search business under it, fell only about 1.6%. Figma, fresh off a strong quarter, fell 17%.

The lesson I keep repeating

When everybody owns the same thing for the same reason, one piece of news can take it all down at once. Price is what you pay; value is what you get. Thursday, a lot of people found out they had paid for a single story.

You can make the same mistake with the AI tools themselves. One week a new model tops the charts; the next week a rival passes it; and every one of them is confidently wrong about something. Asking only one model is a one-stock portfolio. It feels fine until the day it doesn't.

The sensible approach is the dull one: diversify. Put the same question to several top models and see where they agree before you act. That's what Gangsta AI does. It asks ChatGPT, Claude, Gemini, Grok and 30+ others at once and gives you one cross-checked answer, with the disagreements left in plain view where you can see them. When the models split, that's your circuit breaker. It tells you to slow down before you spend real money.

For the record, the Nasdaq is still up about 4.6% for the year. Panics pass. Bad decisions made in a panic usually last longer.

If you want to know which model is actually strongest at what before you rely on one, start with our rundown of the best AI models.

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