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Alphabet Falls 5% After AI Leader Departure Sparks Talent Concerns

Alphabet closed down 5.08% at $348.78 on June 22 after reports that an AI leader departed for a rival, underscoring investor anxiety over talent retention in the company's AI research units. The stock underperformed the Nasdaq and other megacap tech stocks on the same trading day.

Alphabet closed at $348.78 on June 22, down 5.08%, after reports that another senior AI researcher left the company for a competitor [1]. The decline erased roughly $23 billion in market capitalization from the $4.5 trillion parent company of Google and represented its worst single-day performance in over a year [2].

The departure involved the co-creator of AlphaFold, the protein-folding model developed by DeepMind, marking the latest in a series of high-profile exits from Alphabet's AI research units [1]. Volume reached 1.9 million shares, well below the 30 million average, suggesting the selloff was driven by large institutional repositioning rather than broad retail panic [1]. The stock traded in a range of $341.73 to $358.77 during the session [1].

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