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Tech Sell-Off Erases $2.5 Tril...The tech sell-off on Thursday erased roughly $2.5 trillion in market value from the Nasdaq Composite, marking the index's largest single-day erosion on record and its steepest percentage decline in 18 months. The NASDAQ plunged 5.52% to close at 24,315.00, falling more than 10% below its October 6 record and formally entering correction territory. The S&P 500 dropped 4.36% to 7,353.73, while the Dow Jones Industrial Average shed 1,833 points, or 3.44%, closing at 51,523.06.
The sell-off reversed the prior session's post-election rally entirely. On Wednesday, markets had cheered the resolution of political uncertainty following the midterm elections. By Thursday, that same outcome had become the catalyst for the steepest AI-driven liquidation of the year.
The proximate trigger was the Democratic sweep of Congress and key governorships, which investors interpreted as a signal that data center expansion faces a tougher regulatory path ahead. In Texas, Governor-elect Gina Hinojosa campaigned on an immediate moratorium on new data center construction, and her victory placed roughly half of proposed AI data center additions across the US under potential scrutiny. UBS analysts estimated that around 30% of expected US data center capacity additions in 2028 could be at risk from construction pauses.
"The market's moving from the promise of AI to the price of AI," said Ted Parkhill, founder and CEO of Incline Investment Management. "There's no question that AI is going to be transformative for the world in the long run. But that doesn't mean every AI-related stock is currently priced appropriately."
If the data center buildout slows, what happens to the earnings estimates that justified a year of record valuations?
The Philadelphia Semiconductor Index crashed 12.25%, its worst session since the early days of the pandemic in 2020, with all 30 components closing lower. Nvidia fell 9.3%, wiping out approximately $447 billion in market capitalization alone. AMD plunged 17.3%, Broadcom dropped 10.6%, and Micron tumbled 17.5%. Memory maker SanDisk lost 22%, while Western Digital shed 17%.
The carnage extended beyond semiconductors. CoreWeave, a barometer of AI infrastructure anxiety, slumped 12% as its credit default spreads widened to a record high. Nebius fell 15%. Data center operators Applied Digital, Cipher Digital, and IREN each tumbled more than 14%. Even hyperscalers that had defied Wednesday's selling succumbed: Amazon fell 2.5% and Alphabet slid 2%.
The NASDAQ correction arrives with historical precedent that offers both caution and comfort. Analysis of ten correction episodes over the past decade found that additional selling often follows in the immediate month, but rebounds typically materialize within three to six months, with an average gain of 9.41% three months after the bottom. The notable exception was January 2022, when the index fell another 18.3% over six months and remained below its prior peak a year later. The VIX, Wall Street's fear gauge, surged 61% to 28.15, its highest level since the early weeks of the Iran war. Barclays estimated that volatility-control funds would sell approximately $135 billion worth of US stock futures over the following 24 to 48 hours, amplifying the mechanical selling pressure. Whether the tech sell-off represents a durable repricing of AI infrastructure or a violent but temporary reset depends on a variable no earnings report can resolve: whether the political resistance to data centers translates into actual construction delays. For now, the market has rendered its verdict on that question.
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