The last time debt-fueled tech euphoria met a Federal Reserve rate hike, the NASDAQ lost 78% of its value. That was 2000. The dot-com crash erased $5 trillion in market capitalization.
Today, the five biggest companies on Wall Street are worth $18 trillion combined — nearly the size of China’s entire economy. And the pattern looks eerily familiar.
Big tech has pivoted hard. Six months ago, these same giants were buying back their own stock, a classic sign of excess cash. Now they are taking on debt to fund artificial intelligence infrastructure.
That shift — from share repurchases to bond issuance — is what caught Brent Fredberg’s attention. Fredberg, director of investments at Brandes Investment Partners, calls the debt levels “still relatively modest.” But he did not say they were safe.
The Federal Reserve has floated the idea of raising interest rates. That changes everything. Debt that looks manageable at current rates becomes a weight when borrowing costs climb.
In the dot-com era, the Fed raised rates six times between 1999 and 2000. The party ended. SpaceX, fresh off its blockbuster IPO, announced this week it plans to issue $25 billion in bonds.
The stock fell. Analysts began asking questions about financial health.
That is the kind of signal that, in 2000, preceded a cascade. There is another echo from the past: circular financing. Fredberg warned about it directly.
Big tech companies invest in AI startups. Those startups then use the cash to buy big tech’s own cloud services and hardware.
The money goes in a circle. It looks like genuine revenue on both sides. It is not.
In the late 1990s, telecom companies did the same thing — they bought capacity from each other, booked revenue, and pretended the demand was real. When the music stopped, $2 trillion in telecom debt went bad. Itay Goldstein, a finance professor at Wharton, put it plainly.
“There are many indications that we are in a bubble,” he said. “It seems likely that there is overpricing.” Goldstein studies market crashes.
He does not use the word bubble lightly. The scale is what makes this different. The combined value of the five biggest tech firms is roughly $18 trillion.
That is not just a lot of money. It is a number roughly equal to the entire Chinese economy.
If that valuation corrects by even 30%, the loss would be $5.4 trillion — larger than the entire dot-com crash in absolute terms. Some experts warn the fallout could be bigger than anything Wall Street has ever seen. Investors are nervous.
That nervousness shows in the recent swings in tech stocks. Volatility is back. When a market that has gone straight up starts jerking sideways and down, it often means the easy money has already been made.
The question is not whether AI will transform industries. It probably will.
The question is whether the current stock prices reflect that transformation or a collective delusion about how fast it will happen. In 2000, the internet changed everything — just not fast enough to justify the prices people paid for Pets.com and Webvan. History does not repeat, but it does rhyme.
The Fed is signaling higher rates. Debt is piling up.
Circular financing is back. And the biggest companies in the world are betting the farm on a technology that has not yet proven it can generate the returns its stock prices imply. That is not a prediction.
It is a pattern.
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