In brief
On Thursday, U.S. stocks fell steeply as AI‑related and semiconductor shares plunged amid concerns over tighter regulation tied to the recent Democratic midterm victories. The Dow, S&P 500, and Nasdaq posted their steepest daily declines in months, while the VIX surged to 28.18. The tech‑heavy semiconductor sector saw a 12% drop, the largest single‑day decline since 2020, leaving uncertainty about the AI industry’s future amid ongoing political and regulatory scrutiny.
On Thursday, the Dow, S&P 500 and Nasdaq all plunged after an abrupt selloff in AI‑related and semiconductor shares amplified fears that Democratic gains in the recent midterm election could tighten data‑center restrictions.
The Dow Jones Industrial Average fell 1,833.06 points, or 3.4 percent, to 51,523.06. The S&P 500 dropped 334.89 points, or 4.4 percent, to 7,353.73, while the Nasdaq Composite tumbled 1,421.52 points, or 5.5 percent, to 24,315.
All 11 major S&P 500 sectors ended lower, with information technology leading the slide, followed by consumer discretionary and industrials. Semiconductor shares were hit hardest, as trade‑debt concerns grew over the potential for stricter data‑center approvals under a Democrat‑led Congress.
In the semiconductor market, the PHLX “SOX” index slid 12 percent on Thursday, the largest one‑day decline since a 16 percent rout on 16 March 2020 according to Wall‑Street Journal data.
Key concerns point to possible limits on building new data‑center facilities, which would curb the expansion of AI infrastructure across the country. Major chipmakers and AI‑heavy firms responded with steep sell‑offs, echoing fears that a slowdown in AI development could ripple through technology stocks.
"This is a true panic. This is 100 percent about the chip stocks and the potential slowdown in the AI trade," said Jay Hatfield, chief executive of Infrastructure Capital Advisors, in a statement to Xinhua.
President Donald Trump blamed Democrats for the market decline, calling it a "sad thing to watch" in a social media post on Thursday. He further described the sell‑off as "one of the Worst Days in History based on the results of the Election."
The Cboe Volatility Index (VIX) surged 69.66 percent to close at 28.18, its highest level since late March. Bloomberg noted that the swift fall in chipmakers and AI‑related stocks wiped out earlier gains in U.S. equities, with losses spreading to other sectors.
Investor sentiment remains under pressure amid ongoing uncertainty over the economic outlook. Market participants will need to weigh the potential for regulatory tightening against the fundamentals that once spurred the recent AI rally.
Still, the extent to which the political landscape will affect AI and semiconductor development remains undefined; the exact scope of future data‑center restrictions, the pace of new legislation, and the reaction of technology firms are all unresolved points that will continue to shape the market’s path forward.


