Ten S&P 500 Stocks Lost Over 40% in 2026 as Investors Dumped Everything AI Might Kill

Industry Impact 4
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Summary · why it matters

Ten stocks in the S&P 500 lost more than 40% in 2026 even as the index rose 8.28%, as investors fled companies they believed artificial intelligence would disrupt. Intuit fell 55.27% after cheap AI tax tools emerged, prompting Goldman Sachs analyst Gabriela Borges to cut her price target to $276 from $519 and the company to reduce staff by 17% and lower its TurboTax forecast. Accenture dropped 45.21% as clients shifted spending to AI instead of consultants, with new orders slipping to $19.3 billion from $19.7 billion and the firm cutting its sales growth outlook to between 3% and 4%. Cognizant, Gartner, and The Trade Desk each lost between 44% and 55%, while the two worst performers fell for non-AI reasons: CoStar Group sank 58.86% after saying its Homes.com site would not cover costs until 2029, and Boston Scientific declined 53.59% after cutting its sales growth forecast and recalling Accolade pacemakers linked to four deaths and 2,557 serious injuries. Meanwhile, chip and memory makers surged, with Sandisk up 505.17%, Dell Technologies up 247.55%, and Micron Technology up 222.68%.

Impact on stocks 10

Artificial Intelligence▼ · 3 stocks
Accenture plc
ACN
▼ NegativeDemandrelevance

Clients shifting spending to AI instead of consultants, new orders slipping, and sales growth outlook cut.

Semiconductors▲ · 2 stocks
Brain-Computer Interface▼ · 1 stocks
Boston Scientific Corp
BSX
▼ NegativeDemandrelevance

Cut sales growth forecast and recalled Accolade pacemakers linked to deaths and injuries.

Real Estate▼ · 1 stocks
Cloud & Digital Infrastructure▼ · 1 stocks
Intuit Inc
INTU
▼ NegativeCompetitionrelevance

Cheap AI tax tools emerged, prompting price target cut, staff reduction, and lower TurboTax forecast.

Information Technology▼ · 1 stocks
Gartner Inc
IT
▼ NegativeDemandrelevance

Clients shifting spending to AI instead of consultants, with new orders slipping and sales growth outlook cut.

Communication Services▼ · 1 stocks
Trade Desk Inc
TTD
▼ NegativeDemandrelevance

Investors fled companies believed to be disrupted by AI, causing stock to lose over 40%.

Theme Impact 1

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