S&P 500 drops 1.1% as inflation and AI stocks weigh on market

In short: US stocks fell on Oct. 14 after inflation came in higher than expected and investors sold AI-related shares.

What happened

The S&P 500 fell 1.1% on Wednesday, Oct. 14. It was the index’s steepest one-day drop since July. The Nasdaq dropped 1.9%, and the Dow slipped 0.1%.

One driver was inflation, which is a broad rise in prices over time. September consumer prices rose 3.7% from a year earlier, slightly above economists’ 3.6% forecast. After that report, Treasury yields rose, which often signals investors expect interest rates to stay higher for longer.

Another driver was a selloff in AI-related stocks. Nvidia and Broadcom each fell 3.7%, AMD dropped 6.1%, and cloud-computing provider CoreWeave sank 15.9%.

Investors also worried about the cost of building AI data centers, which are large buildings packed with computers that run AI systems (think of them like giant “engine rooms” for AI). When borrowing costs rise, it can get more expensive for companies to fund projects like these.

Why it matters

Even if you do not own stocks directly, big market drops can affect retirement accounts and how confident businesses feel about hiring and spending. Higher interest rates can also filter into everyday life through more expensive mortgages, car loans, and credit cards. The move also shows that AI stocks can swing sharply when the economy points toward higher financing costs.

Source: NYTimes