Nasdaq Sees Largest One-Day Drop Since June Amid AI Spending Concerns

On October 30, 2026, the Nasdaq Composite fell by 2.86%, closing at 25,437.00. This marked the index's largest one-day percentage decline since June 5. The drop was largely attributed to rising worries about the financial implications of Big Tech's investments in artificial intelligence and the uncertainty surrounding their returns.

Intel was a major contributor to the decline, with its shares plummeting nearly 29% after the company issued disappointing fourth-quarter guidance related to AI and the PC market. This represented Intel's worst single-day performance since 1974.

Amazon also added to the negative sentiment, revealing that it had incurred $42.4 billion in free cash flow outflows over the past year, alongside $94.8 billion in capital expenditures primarily focused on AI-related infrastructure. The repercussions of these announcements were felt across the semiconductor sector, with AMD dropping 10.9% and Nvidia declining by 4.2%. The semiconductor index itself fell by 7.2% on the same day.

The broader market was not immune to these losses, as the S&P 500 dropped by 1.82% and the Dow Jones Industrial Average fell by 1.09%. This selloff capped several weeks of volatile trading in the tech sector, with the Nasdaq now down 7.8% from its record high set on October 6, 2026. It is also on track for its worst monthly decline since March 2025.

Investors Demand Profitability Evidence Amid AI Spending Concerns

The recent losses were part of a larger trend, as Alphabet had recently reported its worst day on record with a 12.6% drop, while Meta disclosed negative free cash flow for the first time since 2012. Investors are increasingly looking for tangible evidence of profitability from AI investments before rewarding further spending in technology that requires significant upfront costs.

Market Scrutiny Intensifies in Semiconductor Sector Following Nasdaq Drop

The reaction from the semiconductor sector is particularly noteworthy, as the 7.2% drop in the chip index indicates that the market is scrutinizing not only the companies making substantial investments but also the suppliers that rely on continued spending for their growth. Nvidia's relatively modest 4.2% decline, in contrast to AMD's sharper fall, suggests that investors are making distinctions within the sector.

Looking ahead, key points of interest include whether the Nasdaq can maintain its position above the 10% drawdown threshold from its October 6 peak, how other major AI investors will frame their capital expenditure plans in upcoming reports, and whether Intel's guidance is indicative of broader issues within the PC and chip markets.