Stocks Erase Post-Midterm Elections Rally, Dragged Down by Tech

The day after Democrats swept Congress, Wall Street celebrated the biggest post‑midterm rally in 44 years, with the Dow jumping 1,569 points (about 3%) and the S&P 500 adding 1.6% to close above 7,600. By Thursday, that optimism evaporated: the Nasdaq fell roughly 5% — 1,422 points at the close — while the S&P 500 slid 4.4% and the Dow tumbled another 3.4%, wiping about $3 trillion from market caps in a single session.

The sell‑off was not evenly spread. Companies whose earnings are tied to artificial‑intelligence compute bore the brunt. Nvidia’s shares dropped close to 9%, AMD and Micron each slid about 15%, and Intel fell nearly 7% in midday trading. The Philadelphia Semiconductor Index plunged almost 10%, its steepest daily loss since the pandemic‑era crash of March 2020. Even non‑chip AI firms felt the shock: CoreWeave, a cloud‑based AI‑chip renter, lost nearly 12%, while the broader “Magnificent 7” tech giants such as Tesla and Qualcomm each fell more than 10% after weaker earnings reports.

Analysts traced the panic to a wave of state‑level ballot measures aimed at slowing data‑center construction, the physical backbone of AI models. Across the country, 45 initiatives appeared on the November ballot; 39 of them passed, most of them restricting new data‑center permits. Companies directly involved in building or operating facilities — Vistra and Vertiv — plunged 14% and 13% respectively on Thursday, while smaller cloud providers like CoreWeave were hit hard by the prospect of a supply‑chain choke point before their hyperscaler customers could absorb the slowdown.

The market’s reaction suggests that the perceived regulatory headwind now outweighs the sector’s earnings momentum. That uncertainty has already postponed the highly anticipated Anthropic IPO, once projected to raise as much as $100 billion. As investors re‑price the risk of a politically driven AI “bubble” deflating, the Nasdaq has entered correction territory, and the next wave of earnings announcements will likely be judged through the lens of upcoming state and federal policy decisions rather than pure technology performance. If Democrats translate ballot victories into federal restrictions, the AI infrastructure pipeline could face a multi‑year delay, forcing a recalibration of valuations across the entire tech sector.