Investors reacted sharply on Thursday after a sweeping midterm victory by anti‑AI Democrats across the country, from Maine to Alaska. The Nasdaq 100, heavily weighted toward technology firms, slid more than 6%, while the broader S&P 500 fell 4%, wiping out over $2.5 trillion in market value.
The sell‑off marks the worst single‑day decline for both indexes since April 2025, when President Trump’s global tariff policy rattled markets. Analysts point to the newly elected officials’ pledges to rein in AI data‑center construction as a key driver of the market anxiety.
Political backdrop
Democrats captured a number of high‑profile races, including Governor‑elect Gina Hinojosa in Texas, a state that hosts the nation’s largest data‑center market. Hundreds of newly elected officials have promised to curb the rapid expansion of AI‑related infrastructure, raising concerns about future regulation.
While Democrats still aim to win Senate seats in Mississippi and Alaska, the immediate impact on Wall Street has been negative. The Nasdaq Composite, which tracks a broader range of stocks, fell more than 5% and entered correction territory, a term used when an index declines at least 10% from recent highs.
Market reactions
Tech giants felt the pressure. Shares of Elon Musk’s SpaceX and Tesla each dropped nearly 10%, and the combined market value of Musk’s enterprises shed more than $450 billion after the election results. Musk, who contributed heavily to Republican candidates, now faces the prospect of tighter regulation and possible investigations at both state and federal levels.
Chipmakers Qualcomm and Arm Holdings reported mixed earnings, contributing to the downturn. Both stocks slid 12%, and the Philadelphia semiconductor index fell 11%, on track for its worst day since March 2020. Memory‑focused ETFs such as the “DRAM” fund sank 15%.
Other AI‑linked hardware firms were hit hard: SanDisk shares plunged 20%, Western Digital and AMD fell 15%, and Seagate and Micron dropped about 13%.
Broader economic context
Despite recent fears, the Nasdaq Composite remains up nearly 35% since the 2024 election, reflecting the long‑term growth of AI investments. However, questions are mounting about whether AI can deliver the productivity gains needed to justify the massive capital inflows.
Oil prices rebounded, with Brent and U.S. crude up about 2% by mid‑morning. Treasury yields edged lower, and traders reduced bets on a Federal Reserve rate hike at the December 8‑9 meeting, with odds now around 60%.
The Dow Jones Industrial Average dropped 1,600 points (3%). Nvidia, the leading supplier to AI firms, fell 9%, its biggest one‑day decline since April 2025, and its stock has lost 15% over the past three months.
Major cloud providers—Alphabet, Meta, Amazon, and Microsoft—also declined, though less sharply than the broader market. Dow components Cisco and Caterpillar, both key AI data‑center suppliers, slipped about 5%.
Market analysts, such as Ed Yardeni of Yardeni Research, argue the AI sector is not experiencing a bubble burst but rather a rapid loss of excess optimism. Yardeni described the market move as “the cold shower I anticipated might occur after a blue‑wave situation.”
Original reporting: KTVZ (Central Oregon) — read the source article.
