S&P 500, Nasdaq end sharply lower as revived AI doubts ignite tech selloff

Marcus Chen

Managing Editor · Thursday, October 22, 2026 at 9:34 PM · 1 min read

Aa

Text size

AAA

Typeface

SansSerif

Line spacing

TightNormalLoose

Theme

AutoLightDark

Focus mode

OffDistraction-free

A−A+

AaSansSave

ShareCopy link

More Technology stories

Technology

What to Know About Shamonda Virus Following the First Reported Human Infection

By Marcus Chen

Wired

Technology

OpenAI trims valuation target to $1.25tn after pitching higher price

By Katherine Langford

Financial Times

Technology

3 big reasons Micron and other chip stocks fell hard on Thursday

By Marcus Chen

MarketWatch

Technology

EU mulls sanctions reprieve for Chinese fabric-maker accused of aiding Russia

By Katherine Langford

South China Morning Post