Breaking: AI Bubble Fears And Data Center Ballots Drive $2.5T Nasdaq Wipeout

The S&P 500 fell 4.3 percent on Thursday, marking its worst trading day since April 2025, while the Nasdaq Composite plunged 5.5 percent in its steepest drop in eighteen months. The selling spread through every sector of the S&P 500 and gathered pace as the trading day progressed, according to The New York Times. The Nasdaq closed more than 11 percent below the record it set last month, placing the index in correction territory. Dow Jones data cited by the BBC estimated that $2.5 trillion in market value was wiped from the Nasdaq Composite during the session.

The market rout was driven by the Democrats' sweep of the House and Senate in Tuesday's midterm elections, which CNBC identified as the primary catalyst. Democrats campaigned across the country on slowing the spread of data centers and artificial intelligence, and dozens of ballot measures aimed at restricting data center development were on the agenda in various states. Voters rejected data centers in a series of local ballots, signaling a growing political backlash against the infrastructure required for the AI build-out, as reported by BBC News and The Guardian.

In Texas, Democrat Gina Hinojosa won the race for governor after campaigning on an immediate moratorium on new data center construction. Her victory, along with Democratic wins in other states with large concentrations of planned facilities such as Ohio, heightened investor concerns that the facilities at the heart of the AI build-out will face new regulatory hurdles. CNBC and The New York Times noted that these state-level restrictions could slow construction and pressure companies tied to the artificial intelligence trade. This political shift compounded broader market worries that the massive sums being spent on AI may not yield sufficient returns, leading to fears of a bubble.

Chip stocks led the decline, with the Philadelphia Semiconductor Index falling more than 12 percent. The index has dropped more than 30 percent since the beginning of October and is almost 40 percent below its peak in June, according to The New York Times and BBC News. Nvidia, the largest component in the Dow Jones Industrial Average, fell 9.2 percent, losing more than $400 billion in market value. Other major chipmakers also suffered significant losses, with SanDisk down more than 22 percent and Western Digital down 17 percent. AMD and Micron each fell more than 17 percent, while Intel dropped 10.3 percent, as reported by BBC News and The Guardian.

The Dow Jones Industrial Average fell more than 1,800 points, a drop of 3.4 percent, to close at 51,868, according to The Guardian. This decline erased the gains made on Wednesday, when Wall Street had experienced its biggest daily gain of the year. The selling pressure was so intense that the Cboe Volatility Index, often called Wall Street's fear gauge, jumped as much as 5.7 points to above 28. This represented the highest reading since March 31, 2026, and the Guardian reported the index was up 61 percent on the day. By midday, nearly 800,000 VIX call options had traded, which was 3.5 times the 30-day average, according to Cboe data via CNBC.

Analysts suggested that the market is undergoing a significant reassessment of the AI trade. Neil Wilson, an investor strategist at Saxo UK, told The Guardian that a complete capitulation-level event was playing out in tech stocks. He stated that the fear is a total momentum unwind as Democrats pace the frontier and kibosh data centre buildout, adding that while the move looks totally overdone, the nature of sell everything in this market means investors need to look for some stability first. Dan Ives, a tech analyst, told The Guardian that Democrats taking control, especially over the Senate, will create major hurdles for AI and tech legislation in the Beltway over the next two years.

Ted Parkhill, founder and chief executive of Incline Investment Management, told The Guardian that the market is moving from the promise of AI to the price of AI. He noted that while AI is going to be transformative for the world in the long run, that does not mean every AI-related stock is currently priced appropriately. He predicted there is going to be a lot of turmoil. Susannah Streeter, chief investment strategist at Wealth Club, told BBC News that fresh panic over the AI trade has hit Wall Street hard. She explained that fears that the vast sums poured into AI infrastructure may not deliver the returns investors have been banking on are now colliding with the prospect of a sharp slowdown in data centre construction.

The tech industry itself has responded to the political backlash. Greg Brockman, president and co-founder of OpenAI, said at the WSJ Tech conference in Napa, California, that everyone had been surprised by the reaction to data centers. He stated that a lot of the shift over the course of this year has been to realize that from San Francisco trying to build infrastructure in Texas, Georgia, and other places, you cannot just tweet and say this is going to be good. He added that the industry needs to be in those communities. Dina Powell McCormick, president of Meta, told the same conference that the industry needs to double and triple down on telling the story, according to BBC News.

Historical data suggests that such corrections can be volatile but often lead to recovery. Frank Cappelleri, founder of CappThesis, told CNBC that the Nasdaq was higher 12 months after the election in all but one of 13 midterm cycles since 1974. However, he noted that the caveat is that the path can be a volatile one. Gene Goldman, chief investment officer at Cetera Financial Group, told The New York Times that the sell-off had become exaggerated as selling accelerated through the day. He predicted a recovery, stating that when you have a correction in a bull market they are typically short lived, and that it is ugly right now but he believes they will see a bounce back soon.