
After the Democratic Party's midterm election victory, concerns spread about strengthening AI regulations and slowing data center investment.
AI-generated summary
After the Democratic Party took control of the majority in the Senate and House of Representatives in the U.S. midterm elections, concerns spread about strengthening regulation of the AI industry and slowing data center investment. Until the previous day, the New York stock market had rallied thanks to expectations of a resolution of political uncertainty and an early end to the war with Iran, but the atmosphere changed drastically within a day.
The three major stock indices of the New York Stock Exchange all fell on the 5th (local time), led by artificial intelligence (AI)-related technology stocks.
After the Democratic Party took control of the majority in both the Senate and the House of Representatives and local power in the U.S. midterm elections, sales poured in as concerns spread about strengthening regulations on the AI industry and slowing data center investment.
On this day, the Dow Jones Industrial Average ended trading at 51,523.06, down 1,833.06 points (3.44%) from the previous day.
The Nasdaq composite index, centered on technology stocks, closed at 24,315.00, down 1,421.52 points (5.52%) from the previous day, and the Standard & Poor's (S&P) 500 index closed at 7,353.73, down 334.89 points (4.36%).
The decline rate of the Nasdaq and S&P 500 indices on this day was the largest since April last year, when the New York stock market was shocked by U.S. President Donald Trump's announcement of mutual tariffs.
According to the Wall Street Journal (WSJ), on this day, the market capitalization of Nasdaq index constituents decreased by approximately $2.5 trillion (approximately 3400 trillion won). This is the largest single-day decline ever.
The market capitalization of S&P 500 index constituents also decreased by approximately $2.9 trillion, hitting an all-time high on a single day.
In particular, the Nasdaq index entered a technical correction, falling more than 10% from its all-time high recorded last month.
The day before, the New York stock market rallied thanks to the resolution of political uncertainty due to the Democratic Party's control of Congress and the plunge in international oil prices amid expectations of an early end to the war in Iran. However, the mood changed dramatically within a day as the negative impact of the Democratic Party's victory on the AI industry was highlighted.
The Chicago Board Options Exchange (CBOE) Volatility Index (VIX), called Wall Street's 'fear index', soared to 28.09 during the day, recording the highest in eight months.
As the Democratic Party won elections not only in Congress but also in major regions where the data center industry is concentrated, such as Texas and Georgia, concerns have grown that regulations on new data center construction may be strengthened.
This has led to concerns that large-scale facility investment and semiconductor demand, which have supported the rise in stock prices of AI-related companies, may slow down faster than expected.
The selling was strong, with Nvidia, a leading AI semiconductor stock, falling 9.3%, Broadcom falling 10.6%, and AMD falling 17.3%.
In the aftermath, the Philadelphia Semiconductor Index plunged more than 12%, recording the largest drop since 2020, at the beginning of the COVID-19 pandemic.
According to the Wall Street Journal (WSJ), at one point this afternoon, the market capitalization of the 'Magnificent 7' (M7), which refers to seven major American big tech companies, including NVIDIA and Microsoft, evaporated by more than $1 trillion (about 1,356 trillion won).
Michael O'Rourke of Jones Trading said, "The slowdown in data center investment due to political changes will become a reality, and the performance estimates that were the core basis for the bullish theory are no longer valid."
He said, “Investors do not know at what level the performance outlook will be formed again,” and “we are reducing the proportion of risky assets until uncertainty is resolved.”
Tesla and Space
The selling that started in technology stocks spread to financial and industrial stocks, causing all 11 industries that make up the S&P 500 index to fall.
As preference for safe assets strengthened, U.S. Treasury yields fell.
The 10-year U.S. Treasury bond interest rate was 4.84% on this day, down 0.06 percentage points from the previous day (4.90%).
“It feels like the market is crumbling beneath our feet,” said Jonathan Coffina of Meridian Equity Partners. “With all the uncertainty that lies ahead, the market remains extremely vulnerable.”
AI outlook — possibilities, not facts
The Democratic Party is likely to push for legislation to strengthen regulation of the AI industry.
Likely · Within weeks

Doosan Group will invest about 550 billion won ($405.4 million) to expand copper-clad laminate production capacity in Changshu, China, through 2028, targeting AI data center demand as part of a broader 970 billion-won plan announced in September.

While the stock market fell due to concerns about strengthening regulations on AI data centers after the U.S. midterm elections, Yuanta Securities and Daishin Securities analyzed that the market reaction was excessive, saying that it is difficult to interpret construction delays as a cessation of AI investment. However, Coreweave's performance is expected to be a short-term test.

Seoul stocks opened sharply lower Friday, with KOSPI down 8.55% to 4,923.47, triggering a 20-minute circuit breaker after Wall Street's overnight rout. Samsung Electronics fell 9.98% and SK hynix dropped 11.63% amid fears a Democratic sweep could slow data center investments. Oil prices rose after Iranian forces reported at least five tankers damaged in the Strait of Hormuz.
![[AI Pick] SK Biopharm builds AI foundation model for new drug development](/api/img?u=https%3A%2F%2Fimg.yna.co.kr%2Fetc%2Finner%2FKR%2F2026%2F11%2F06%2FAKR20261106048700017_01_i_P2.jpg&w=320&q=72&f=webp)
SK Biopharmaceuticals completed the verification of the AI specialized foundation model project hosted by the Ministry of Science and ICT and established a specialized model for new drug development. We have secured learning data worth 7.14 million cases or 4.4 billion tokens, and plan to begin the transition to AI in translational research that connects non-clinical research results to clinical results.

American PEF TPG is seeking to delist and delist Lotte Rental through a tender offer for the remaining 38.83% stake in Lotte Rental at 59,000 won per share. The total purchase size is 831.7 billion won, and the underwriter is KB Securities.

Due to the results of the U.S. midterm elections, the Nikkei 225 average stock price fell for five days in a row on the 6th, collapsing the 60,000 level for the first time in about 6 months. Selling pressure was concentrated on AI and semiconductor-related stocks such as Tokyo Electron and Advantest, which fell more than 6% compared to the previous day and are hovering around the 57,100 level.