AI fears hammer Google parent’s stock, erasing $500 billion in value

Shares of Google parent company Alphabet sank Thursday by more than 12%, in its worst one-day performance ever, wiping out more than $500 billion in market value.
Alphabet is America’s fourth-largest company, worth a total of $3.42 trillion, as of midday. Still, the amount of value it shed Thursday ranks as the second-worst wipeout in market history, only behind Nvidia’s $589 billion drop in 2025 .
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