US stock market crash today: Dow, S&P 500, Nasdaq slide deep into the red — why is the stock market down today?

US stock market crash today: U.S. stocks traded lower on Monday as investors stepped back ahead of a heavy slate of economic data that could shape the Federal Reserve’s next move. Major indexes slipped into the red by mid-morning, extending last week’s tech-led pullback.

The Dow Jones Industrial Average fell 122 points, or 0.25%, to 48,335. The S&P 500 slipped 0.33% to 6,804, while the Nasdaq Composite dropped 0.68% to 23,038. Traders stayed cautious as markets braced for delayed jobs, inflation, and retail sales data following the fall government shutdown.

Pressure remained strongest in technology. The Nasdaq continued to lag after last week’s rotation out of AI leaders. Oracle lost 12.7% last week and Broadcom fell more than 7%, dragging the S&P 500 tech sector down 2.3%. Despite that, Nvidia rose about 1.5% Monday, offering limited support.


Strategists say leadership is broadening. Yardeni Research warned the “Magnificent Seven” could lose dominance in 2026 as AI competition intensifies. That shift has pushed investors toward financials and value names. Goldman Sachs and Morgan Stanley both gained more than 1%, helping cushion broader losses.

Individual stocks saw outsized swings. Radiopharm Theranostics (RADX) surged over 140%, while AMC Robotics (AMCI) jumped more than 150% on heavy volume. On the downside, Ondas Holdings fell nearly 11% and IREN slid about 10%, reflecting heightened speculative trading.

Attention now turns to macro data. November nonfarm payrolls are due Tuesday, with economists expecting just 40,000 jobs added, down sharply from September’s 119,000. Retail sales and CPI inflation data follow later this week. Any surprise could reset rate-cut expectations and drive the next market move.

Today’s top stock gainers and losers

Top gainers

• RADX – Radiopharm Theranostics ADR: +148.83% to $10.60, heavy speculative buying on high volume
• AMCI – AMC Robotics Corp: +137.45% to $6.43, sharp momentum-driven rally
• TSLA – Tesla Inc.: +3.37% to $474.44, strength in mega-cap tech
• NVDA – Nvidia Corp.: +1.05% to $176.85, continued AI-related demand

Top losers

• ONDS – Ondas Holdings: −11.71% to $7.72, profit-taking after recent surge
• IREN – IREN Limited: −10.24% to $36.02, pressure in crypto-linked names
• BBAI – BigBear.ai: −8.78% to $5.82, AI rotation continues
• OPEN – Opendoor Technologies: −4.34% to $6.28, weakness in housing tech
• MIST – Milestone Pharma: −4.56% to $2.30, biotech volatility persists
• PLUG – Plug Power: −3.88% to $2.23, clean-energy stocks remain under pressure