US Stock Markets Plunge, Trillions Wiped Out Amid Iran War Fears and Political Turmoil

Wall Street suffered one of its sharpest single-day declines in recent months as US stock markets erased trillions of dollars in value, driven by a combination of lingering fears over the conflict with Iran and a sharp political shift following the midterm elections.

On Thursday, major indexes tumbled sharply. The Dow Jones Industrial Average fell more than 1,800 points, the S&P 500 dropped over 4%, and the tech-heavy Nasdaq suffered particularly heavy losses. Market data showed roughly $2.5 trillion wiped from Nasdaq-listed companies in a single session, with broader estimates putting S&P 500 market-cap losses near $2.9–3 trillion. The sell-off unfolded rapidly after the open, amplifying losses for investors already on edge.

Analysts and market participants pointed to two overlapping pressures. First, the ongoing US-Israel conflict with Iran has kept oil prices volatile and inflation concerns elevated for much of the year, periodically rattling equity markets. Second, the Democratic Party’s decisive gains in the midterms, securing control of both chambers of Congress, raised immediate questions about the future of large-scale data-center construction critical to the artificial-intelligence boom. Investors worried that new state-level restrictions and federal oversight could slow capital expenditure that has supported tech valuations.

President Donald Trump publicly attributed the market drop to the election results, stating on social media that the sell-off was among the worst in history and linking it directly to Democratic victories. The political uncertainty compounded existing unease about the duration and economic fallout of the Iran conflict, including potential disruptions to energy supplies through the Strait of Hormuz.

Technology and semiconductor stocks led the declines, with heavyweights such as Nvidia among the hardest hit. The broader market saw few safe havens as selling pressure spread. The VIX “fear index” spiked, reflecting heightened volatility. Retail and institutional investors alike absorbed substantial paper losses in a matter of hours.