Nasdaq Faces $2 Trillion Wipeout in October as AI Spending Fears Deepen

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More than $2 trillion in market value was set to be wiped from the Nasdaq 100 in October 2026. The tech heavy index had fallen over 5.8 percent so far in the month, as investors asked a simple question: will the huge spending on artificial intelligence pay off soon enough?

What happened

Big technology companies have been raising their spending plans as they race to build AI infrastructure. Meta, Alphabet, and Amazon all raised their spending forecasts further in this earnings season.

That spending worried investors for two reasons. First, the returns are not yet clear. Second, higher borrowing costs make debt funded investment more expensive and harder to justify.

The pressure showed in individual results. Alphabet suffered its biggest one day percentage drop on record on Thursday, after disappointing results in its core search advertising business and a sharp rise in cash burn. Meta’s plans for a record $97.5 billion fund raise raised concerns about shareholder dilution, and about whether other big tech companies will also need to tap capital markets more often.

Not every company moved the same way. Microsoft and SpaceX broke from the gloom in the Reuters roundup, with results that showed AI spending starting to pay off. Microsoft was also reported to be planning about $25 billion through its first US investment grade bond sale in more than nine years.

The scale of the spending helps explain the market reaction. Morgan Stanley forecast that capital spending on AI infrastructure overall will surpass $1 trillion next year. J.P. Morgan expects global AI capex to reach $5.5 trillion by 2030, with $900 billion spent in 2026 alone. J.P. Morgan analysts also noted that this year’s AI capex by Amazon, Alphabet, Meta, Oracle, and Microsoft would likely equal their combined spending since the launch of ChatGPT in November 2022.

This monthly fall follows a sharp single day selloff earlier in the week, when Amazon and Intel results deepened worries about AI costs. You can read that related update here: Amazon and Intel Results Deepen Tech Sell-Off as AI Spending Worries Grow

Reuters reported the October wipeout on October 30, 2026, in its article Nasdaq faces $2 trillion wipeout in October as AI spending fears deepen

Why it matters for beginners

A $2 trillion figure sounds abstract, so think of it this way. Market value is the total value of all the shares in an index. When share prices fall, that total value falls too, even if no company has closed down.

For a beginner, three lessons stand out.

First, a strong theme can still fall. AI is a real technology shift, but that does not mean every AI related share rises in a straight line.

Second, spending matters as much as sales. A company can grow, and still worry investors, if it needs to spend much more to keep growing.

Third, debt adds risk. When companies borrow to fund expansion, higher interest rates raise the cost of that borrowing. Reuters noted that growing reliance on debt funding is emerging as a new risk for investors in AI companies.

This is not a signal to buy or sell any share. It is a reminder to understand what a company spends, what it earns, and how long you plan to hold an investment.

What to watch next

Apple is set to report next week, and AI chip leader Nvidia is due in mid November. Those results will give investors another check on whether AI spending is turning into profit.

Investors will also watch borrowing plans. If more big tech companies raise large amounts of debt, questions about cost and dilution are likely to continue.

Finally, watch the broader market mood. The Nasdaq 100 fall in October came alongside rising borrowing costs and fresh worries about energy prices and interest rates, so tech shares are not moving in isolation.

FAQ

What is the Nasdaq 100?

It is an index of 100 of the largest non financial companies listed on the Nasdaq stock market. It is heavily weighted toward technology companies, so it often moves sharply when tech shares move.

Does a $2 trillion wipeout mean $2 trillion in cash was lost?

No. It means the total market value of the companies in the index fell by that amount, based on lower share prices. It is a change in valuation, not cash disappearing from bank accounts.

Why are investors worried about AI spending now?

Because spending forecasts keep rising, while the payoff is still uncertain. Investors want to see evidence that AI investment leads to stronger profits, not just higher costs.

What should beginners do during a tech selloff?

Avoid panic decisions based on one day or one month. Review your own goals, time horizon, and diversification, and focus on learning how companies earn money and fund growth, rather than chasing a single theme.