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Wall Street’s tumultuous midterm election week began with a burst of investor celebration. By the end of the next trading day, that enthusiasm had collapsed into a punishing rout that erased major gains and drove the Nasdaq Composite into correction territory.

Stocks surged Wednesday after Democrats swept both chambers of Congress. The Dow climbed more than 1,500 points, while the S&P 500 rallied nearly 2%, as investors initially embraced the removal of a major source of political uncertainty.

The celebration proved brutally brief. Less than 24 hours later, Wall Street and Main Street investors dumped artificial intelligence winners and chip stocks, dragging the technology heavy Nasdaq sharply lower and exposing deep doubts about the market’s most popular trades.

The reversal added another violent swing to a year already marked by substantial volatility. The VIX climbed to its highest level since President Trump extended the deadline for the Iran war in late March, reflecting the sharp deterioration in investors’ appetite for risk.

Steve Sosnick, chief strategist at Interactive Brokers, watched the election results while moving between CNN, Fox, MSNBC, and Bloomberg. Stock futures were slipping as the results arrived, and they remained down roughly 1% when he went to bed.

Democrats had secured control of both the House and Senate, resolving one uncertainty while raising another problem for the artificial intelligence investment boom. Newly elected governors in several states had promised to stop or pause construction of data centers.

Those states represent an estimated 45% of planned United States data center capacity, according to Goldman Sachs. That prospect placed new political pressure on a sector already facing investor unease after a powerful run.

The stakes were particularly high in Texas, where more than half of the country’s planned data center capacity is expected to be built. Democrat Gina Hinojosa won the governor’s race after promising a moratorium on approvals for new data centers.

The result quickly drew attention from Elon Musk. “Data centers in space look pretty appealing right now,” Musk posted on X early Wednesday.

Despite those concerns, Wall Street initially found reasons to celebrate the Democratic sweep. The Dow jumped 3% for its best day in months, while the S&P 500 gained 1.6% and the Nasdaq advanced 1.4%.

Investors appeared to welcome the possibility of divided government, which could limit parts of President Trump’s agenda. Oil prices also fell sharply, easing concerns about inflation and adding fuel to the optimistic mood across markets.

Election uncertainty also disappeared from the immediate picture, driving the VIX sharply lower. Sosnick said that decline may have encouraged trading strategies sensitive to volatility to purchase stocks, creating additional upward pressure as more investors joined the rally.

Yet stress had already been building beneath the surface for more than a month. Hedge funds had been selling stocks connected to the artificial intelligence boom as they rushed to secure profits before the end of the year.

Shares of chipmaking equipment companies Lam Research and Applied Materials had already lost roughly one third of their value during the preceding month. The threat of new data center restrictions following the Democratic sweep offered investors another reason to retreat from the artificial intelligence trade.

By Thursday, the strains overwhelmed the market. The Dow plunged more than 1,800 points and erased Wednesday’s advance, while the S&P 500 dropped 4.4% and the Nasdaq collapsed 5.5%.

Truist chief markets strategist Keith Lerner told clients that the action amounted to “something of a buyers' strike” in technology stocks. The VIX surged as much as 70%, a move that has occurred only eight times since 1991, according to CBOE data.

“They're shooting the generals,” Nomura strategist Charlie McElligott wrote Thursday while describing the collapse of the year’s most popular stock market bets. The market was no longer merely trimming speculative positions, as investors were selling prominent winners from the artificial intelligence boom.

For Sosnick, the reversal demonstrated how quickly confidence can evaporate. The election result remained unchanged, but investors’ willingness to accept risk disappeared, turning Wednesday’s celebration into Thursday’s rout and leaving the S&P 500 with its worst weekly performance since June.

DISCLAIMER: GoldInvestors.news is not a registered investment, legal or tax advisor or broker/dealer. All investment/financial opinions expressed by GoldInvestors.news are from the personal research and experience of the owner of the site and are intended as educational material. Although best efforts are made to ensure that all information is accurate and up to date, occasionally unintended errors and misprints may occur.