Alphabet Shares Drop 7.2% After Second AI Star John Jumper Departs for Anthropic
Alphabet Shares Drop After Second AI Star Departs for Anthropic

Alphabet Shares Tumble After Key AI Researcher Departs

Alphabet Inc. shares fell as much as 7.2% on Monday, the largest intraday drop since February, after Google DeepMind Vice President John Jumper announced over the weekend he was leaving for rival Anthropic. The departure marks the second high-profile AI leader to leave Google in a week, following Noam Shazeer's move to OpenAI.

Jumper, who won the 2024 Nobel Prize alongside DeepMind CEO Demis Hassabis for creating AlphaFold—an AI model that predicts protein structures—was a key member of Google's AI coding development team. His exit comes as Google has struggled to sell AI coding tools to businesses, according to former employees, while Anthropic and OpenAI have gained momentum in this area.

Broader Tech Weakness Compounds Losses

Alphabet's drop occurred amid broader weakness in other megacap tech stocks. A Bloomberg index tracking the so-called Magnificent Seven fell as much as 2.2% on Monday. Amazon.com Inc. declined as much as 4.9%, while Meta Platforms Inc. and Microsoft Corp. both fell more than 2%.

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“OpenAI and Anthropic are increasingly the dominant frontier firms in the United States and seem to be pulling away from models and coding tools from Google, Meta, and xAI,” said Adam Crisafulli, founder of newsletter Vital Knowledge, in a note on Sunday. “Jumper’s departure is not helping Google.”

Impact on Google's AI Ambitions

Jumper's move to Anthropic signals a talent drain from Google's AI division at a critical time. The company has been investing heavily in AI, but competition for top researchers is fierce. Anthropic and OpenAI have attracted several prominent researchers from Google in recent months, raising concerns about Google's ability to retain its AI talent and maintain its competitive edge.

The departure also highlights challenges in Google's AI coding tools business, which has struggled to gain traction with enterprise customers. Meanwhile, Anthropic and OpenAI have reported strong demand for their coding assistants, further intensifying competition.

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