Tech and Chip Stocks Tumble as Post-Election AI Fears Hit the Tape

What moved and why it spread

A post-election slide in chipmakers widened as investors dumped technology shares on speculation Democrats in Congress will clamp down on AI. The Nasdaq 100 plunged 6.4% - the steepest single-day fall since March 2020 - wiping out $2.3 trillion, while the S&P 500 lost 4.4%.

Semis led the damage, with a key gauge of chip giants down 12%. Qualcomm Inc. and Arm Holdings Plc dropped after outlooks disappointed. Tesla Inc. and SpaceX each fell at least 9%. The slump reversed Wednesday's rally, when a Democratic sweep of Congress knocked oil sharply lower on bets the vote would hasten an end to the Iran war.

What pros are saying

Michael O'Rourke at JonesTrading said the political shift will slow data center spending and makes prior earnings estimates underpinning bullish cases obsolete. "Investors have no idea where those estimates will reset," he said. "As a result, they are de-risking until clarity returns, which won't be for some time."

Selling broadened beyond tech as a move into defensive sectors turned into a wider equity rout. A volatility gauge spiked. Bitcoin fell.

Bonds rallied even with oil higher. As enthusiasm for the AI buildout faded, traders also pared expectations for more Federal Reserve hikes. Bloomberg flagged the backdrop with the header "S&P 500 Tumbles Most Since April 2025 on AI Selloff."

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Michael Burry - famous for betting against the U.S. housing market - disclosed that he had unloaded 25% of his put positions tied to the $58 billion VanEck Semiconductor ETF, adding, "The SMH put positions even after the sale however have become very large positions." David Bahnsen at The Bahnsen Group argued the day's action shows what happens when hype drives prices, and said it underscores how the S&P 500 is "way too concentrated" in tech.

Jakub Rochlitz at eToro noted this rout differs from typical selloffs because rebounds have been scarce - pointing to Intel Corp. falling further this week after plunging almost 30% Friday. He also cited rising cross-sector correlation and volatility as signs the damage is spreading. Chris Zaccarelli at Northlight Asset Management called the all-or-nothing tone surprising, saying that while sentiment has turned and building data centers will be harder, projects with a solid business case should still proceed.

What it means for your portfolio

Flows rotated toward safety. Bonds caught a bid, crypto sank, and volatility jumped, even as oil rose. Will Compernolle at FHN Financial said a sharp AI investment pullback might have limited labor-market effects because the surge added few jobs, and any broader economic hit via financial contagion would not show up in Friday's jobs report. Apple, meanwhile, tapped credit markets, raising $7.5 billion in high-grade bonds during the tech issuance rush.

The bottom line: markets quickly repriced AI political risk and growth assumptions, punishing concentrated tech bets and lifting haven assets. Positioning now reflects lower odds of additional Fed hikes and a more cautious outlook on AI infrastructure spend.

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