‘Black Monday’ crash fears are intensifying ahead of Monday, October 19, as Wall Street reels from an AI-led sell-off, rising oil prices, and renewed inflation concerns.
The latest market turmoil has heightened anxieties regarding a stock market crash in 2026. On Friday, the Nasdaq Composite fell 2.19%, the S&P 500 lost 1.22%, and the Dow Jones Industrial Average declined 0.55%.
This sell-off left the Nasdaq down more than 4% for the week, while the S&P 500 recorded its worst weekly performance since January. The Cboe Volatility Index (VIX), Wall Street’s primary fear gauge, surged nearly 25% to 20.57, reaching its highest level since late July.
The recent decline reflects mounting concerns regarding the sustainability of AI investments, rising energy costs, and the possibility that borrowing costs will remain elevated.
AI-linked stocks have faced particular pressure as investors question whether companies investing heavily in data centers can generate sufficient revenue to justify their capital expenditures.
CoreWeave (NASDAQ: CRWV) plunged 12% on Friday, extending its five-session losses to approximately 25%. The company’s bonds also saw a sharp sell-off, pushing yields above 15%. Broadcom (NASDAQ: AVGO) fell 3.6%, while the Philadelphia Semiconductor Index recorded another decline, extending its losing streak to eight sessions.
Why stock market plunged on Friday
The market weakness has raised questions about whether highly leveraged AI infrastructure firms can generate enough returns to service their debt, with further financing stress potentially spreading to credit markets and the broader economy.
Meanwhile, Brent crude climbed to approximately $109 a barrel amid Middle East tensions and supply disruption fears, which raises inflation risks and could limit the Federal Reserve’s ability to cut interest rates. Stronger-than-expected U.S. producer-price data has added to concerns about borrowing costs and pressure on growth-stock valuations.
Investor leverage presents another risk, as U.S. stock-market margin debt reached approximately $1.5 trillion before easing to $1.4 trillion in August, a figure still 27% higher year over year. A prolonged sell-off could trigger margin calls, forcing investors to liquidate holdings and amplifying losses, although elevated debt alone does not signal an imminent crash.
Prediction markets remain unfazed
Despite mounting concerns, Polymarket’s October 19 S&P 500 opening contract remains largely unfazed.
