Tech Sell-Off Erases Nearly $1 Trillion From Nasdaq in One Week 2026

A tech sell-off that began earlier this month and gained steam with disappointing earnings from leading tech companies drove US markets down by hundreds of billions of dollars on Friday. In total, the decline has knocked nearly $1 trillion in value off the tech-heavy Nasdaq exchange in one week and erased about $2 trillion in a month.

The S&P 500 fell by more than 1% on Friday, losing hundreds of billions of dollars in market value. It was on track to erase its gain for October, even though it set its all-time high during the same month.

The weakness for technology stocks dragged the Nasdaq composite down even further, more than 3%, also erasing hundreds of billions in value. The Dow Jones Industrial Average fell less.

What Happened: A $2 Trillion Wipeout in October

More than $2 trillion in market value is set to be wiped from the Nasdaq 100 this month, as big tech earnings intensified investor scrutiny of whether the billions being poured into artificial intelligence can generate returns quickly enough. The wipeout would amount to slightly more than SpaceX's entire market value.

The index has fallen more than 5.8% so far in October as the AI trade ran into turbulence. Hyperscalers Meta Platforms, Alphabet, and Amazon all raised spending forecasts further as they race to expand AI infrastructure.

Intel tumbled nearly 30% and is flirting with its worst day since 1974, even though the company's results were not the sole trigger for the broader sell-off.

Why It Matters: The AI Spending Question

The sell-off reflects growing investor skepticism about the timeline for AI profitability. Companies are pouring billions into data centers, chips, and research, but the payoff remains uncertain.

When earnings reports show rising costs without corresponding revenue acceleration, investors punish the stocks. That is exactly what happened this week.

The Nasdaq 100's 5.8% drop in October is significant because it comes after a strong run-up earlier in the year. The index set a record high in October before reversing course, a classic sign of market nervousness.

Key Takeaways for Investors

• Earnings disappointments from major tech firms triggered the sell-off, with Intel's near-30% drop leading the decline.
• AI spending is under the microscope: Meta, Alphabet, and Amazon all raised capital expenditure forecasts, and investors are demanding faster returns.
• The Nasdaq 100 has fallen over 5.8% in October, erasing more than $2 trillion in market value.
• The S&P 500 is on track to lose its October gain despite hitting an all-time high earlier in the month.
• Market volatility is likely to persist as earnings season continues and AI investment themes are reassessed.

Company-by-Company Impact

The table shows that even the largest companies are not immune to investor demands for fiscal discipline. When spending rises without clear near-term returns, shareholders react.

What to Watch Next

Earnings season continues, and more tech companies will report results. Any sign of slowing AI spending or better-than-expected returns could stabilize the market.

Conversely, further increases in capital expenditure guidance without revenue upside could extend the sell-off. The Federal Reserve's interest rate path also remains a factor, as higher rates make future profits less valuable today.

For now, the tech sector is in a correction phase. Whether it becomes a deeper downturn depends on whether companies can convince investors that AI investments will pay off.

As workers in the tech industry face layoffs and restructuring, some are turning to collective action. The trend of AI drives tech workers to unionize highlights growing labor tensions in the sector. The background to this story is set out in Tech Stock Sell-Off Deepens as Markets Await UK GDP Report. A related thread runs through Global Tech Stocks Fall as Chip Sell-Off Deepens Amid Tensions.

Investors should also consider how AI spending affects company culture and talent retention. The push for efficiency is reshaping the workforce, as detailed in our report on key trends in tech unionization. Earlier coverage in S&P 500 and Nasdaq Hit Record Highs on AI Chipmaker Rally shows how the argument developed. A closer look at the same subject appears in Apple and Amazon Rising Revenues Signal AI Spending Concerns.

Finally, the broader economic impact of the sell-off will be watched closely. For a deeper look at the labor angle, see how AI is driving tech workers to unionize. Anyone following the wider picture can start with Apple and Amazon Revenues Rise Amid AI Spending Concerns.