Alphabet loses ~$500B in worst day; AI search cannibalization fears mount

Alphabet shares plunged, erasing nearly $500 billion in market value in its worst single-day drop on record. The selloff follows investor concerns that AI-driven search features are cannibalizing Google's core search business, though the specific trigger (earnings, product shift, or analyst action) is not detailed in the source. This marks a significant repricing of the AI transition risk for the largest digital-ad platform.

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