Why US Stocks Plunged and the VIX Jumped on November 5, 2026

Last verified: November 5, 2026, at 4:25 p.m. Eastern Standard Time (EST, UTC−05:00).

US stocks plunged on November 5 as a sell-off in artificial intelligence and semiconductor shares spread across major indexes. The Nasdaq Composite fell 5.52%, the S&P 500 lost 4.36%, and the Russell 2000 dropped 4.45%, according to the supplied delayed Yahoo Finance data. The VIX volatility index jumped a reported 69.54%, signaling a sharp increase in the cost of protection against S&P 500 swings.

Concern about the cost and pace of AI infrastructure investment was already weighing on technology shares. Investors also considered whether Tuesday’s midterm election results could lead to greater restrictions on data-center construction. Those are reported market concerns, not proof that any single event caused the entire decline. Friday’s October employment report is the next major scheduled test for stocks and interest-rate expectations.

Destaques

• The Nasdaq Composite finished at 24,315.00, down 5.52%; the S&P 500 closed at 7,353.73, down 4.36%.
• The Russell 2000 fell to a reported 2,729.89, while the Dow Jones Industrial Average declined 3.44% to 51,523.06.
• The supplied VIX reading rose from 16.61 to 28.16. Yahoo’s quote pages were unavailable for independent verification at the time of checking.
• The October jobs report is scheduled for November 6 at 8:30 a.m. EST (13:30 UTC), before the next regular stock-market session.

What happened to the Nasdaq, S&P 500 and Russell 2000?

The selling reversed a strong post-election rally. The S&P 500 fell 334.89 points, while the Nasdaq lost 1,421.52 points and the Dow dropped 1,833.06 points. The Associated Press independently reported those closing levels and described the decline as broad after earlier gains faded.

The Russell 2000’s reported loss shows that the pressure extended to small-cap stocks, although an index decline alone does not establish why each constituent fell. The Nasdaq’s larger percentage drop is consistent with especially heavy selling among technology and AI-related companies. These four indexes cover different segments of the market; they do not describe every stock or asset.

The Russell and VIX figures above are supplied delayed Yahoo Finance observations, measured against the preceding valid daily close. Their quote pages could not be independently retrieved during verification, so those figures should be treated as provisional. The VIX is an index level, not a dollar price or the percentage loss expected in the next session.

Why did AI and semiconductor stocks fall?

The clearest observed driver was selling in companies linked to the AI buildout. AP reported that Nvidia fell 9.3% and was the largest individual drag on the S&P 500; Advanced Micro Devices dropped 17.3%. Large companies have substantial influence on market-cap-weighted indexes, so a steep decline in a heavily weighted stock can pull down the broader benchmark even when some other shares rise.

Investors had already been debating whether AI-related valuations and infrastructure spending could be justified by future returns. That context predates Thursday’s sell-off. Alphabet’s October 28 earnings release and its earnings discussion provide primary-source context on the scale and economics of technology investment, but they do not establish a specific cause for Thursday’s move.

The election added another possible source of uncertainty. AP reported that Democratic midterm victories raised the possibility of government pauses on additional data-center construction. A possible policy change is not the same as an enacted restriction, and there is no reliable way to assign a precise share of the day’s loss to the election, valuation concerns or any other factor.

Why did the VIX rise so much?

The Cboe Volatility Index reflects expected near-term S&P 500 volatility inferred from option prices. A rising VIX generally means traders are paying more for options that protect against, or benefit from, large moves. The supplied increase from 16.61 to 28.16 is a rise of 11.55 index points, or about 69.54% relative to the prior reading.

That jump is consistent with increased demand for protection during the sell-off. It does not identify which participants bought options, predict the size of Friday’s move, or guarantee that stocks will keep falling. The VIX can fall even after a turbulent day if option prices subsequently ease.

What could move US stocks in the next session?

The next regular session is Friday, November 6. The Bureau of Labor Statistics calendar schedules the October Employment Situation report for 8:30 a.m. EST in New York (UTC−05:00), or 13:30 UTC. Payroll growth, unemployment and wage data may influence expectations for the economy and Federal Reserve policy before the opening bell. The figures were not yet available when this article was checked.

Thursday also brought moves outside equities: AP reported that the 10-year Treasury yield fell to 4.84% from 4.90% and Brent crude rose. Both bond yields and oil can affect the outlook for growth and inflation, though their next moves are uncertain.

• Bull case: If the jobs data supports a resilient economy without reigniting inflation concerns, and AI shares stabilize, buyers could attempt a rebound.
• Base case: If the report sends mixed signals, stocks could remain volatile as investors weigh labor-market data against technology valuations and policy uncertainty.
• Bear case: If the report raises recession or inflation concerns, or selling in major chip stocks intensifies, pressure could spread further across indexes.

These are conditional scenarios, not price targets or a prediction. The response depends on the data, expectations going into the release and how markets interpret the combination.

FAQ

Was the sell-off limited to technology stocks?

No. Technology and AI shares were prominent drivers, but the S&P 500, Dow and reported Russell 2000 readings also fell sharply.

Does a higher VIX mean stocks will fall again?

No. It indicates higher implied volatility in S&P 500 options, not a guaranteed direction for the index.

When is the next US jobs report?

The BLS schedules the October report for Friday, November 6, 2026, at 8:30 a.m. EST (13:30 UTC).