Why is the stock market down today, November 5? Nasdaq plunges into correction territory as tech and AI sell-off deepens
Just twenty-four hours after celebrating a decisive midterm election outcome with a massive post-vote rally, Wall Street experienced a violent reversal on Thursday. An aggressive, widespread rotation out of high-flying technology and artificial intelligence equities pulled major benchmarks sharply lower, pushing the tech-heavy Nasdaq into official correction territory.
The Nasdaq Composite tumbled 4.7%—trading more than 10% below its record peak set last month—to lead the day’s downturn. The broader S&P 500 sank 3.1%, while the Dow Jones Industrial Average shed 1,018 points (or 1.9%), erasing more than half of Wednesday’s historic 1,500-point advance despite modest resilience from defensive constituents like Johnson & Johnson and Chevron.
Meanwhile, Wall Street’s primary fear gauge, the CBOE Volatility Index (VIX), surged more than 54% to surpass 25.6, signaling a dramatic spike in investor hedging.
Market strategists and institutional desks pointed to three primary catalysts driving the abrupt decline:
1. The Post-Midterm AI Trade Unwind
While investors initially welcomed the prospect of legislative gridlock on Wednesday, reality set in on Thursday regarding the implications of a Democratic sweep of both chambers of Congress and key gubernatorial mansions in Texas, Georgia, and Ohio.
Traders fear that increased regulatory scrutiny, environmental pushback, and potential moratoriums could restrict the massive physical buildout of energy-hungry AI data centers. Neocloud and specialized infrastructure firms took the brunt of the hit:
2. Semiconductor and Hardware Capitulation
The semiconductor sector, which had powered equity gains for much of the past two years, suffered one of its steepest daily sell-offs of 2026. The iShares Semiconductor ETF (SOXX) plummeted 9%.
3. Flight to Safety: Capital Shifts into Defensive Havens
Thursday’s downturn was characterized less by outright panic-selling and more by a massive internal rotation. While growth and high-beta momentum assets were dumped, capital moved steadily into value-oriented and defensive areas of the market:
The tech-led rout occurred despite fundamentally solid domestic economic data released Thursday morning:
Despite favorable labor and productivity trends, portfolio managers spent Thursday resetting long-duration valuations, signaling that the rapid, unchecked expansion phase of the AI trade is facing a period of consolidation.