John Jumper leaves Google DeepMind for Anthropic

Alphabet GOOGL

John Jumper, the Google DeepMind vice president who co-created AlphaFold and won the 2024 Nobel Prize in Chemistry, announced he was leaving Google for Anthropic after nine years at the company. Alphabet's shares fell 5.08% on the next session, June 22, in a day when coverage tied the decline to the departures of senior AI staff. For traders, it is a talent-loss signal for Google's AI research franchise rather than a financial result.

John Jumper announced the move on June 19, 2026
Jumper co-created AlphaFold and was a 2024 Nobel laureate
He had spent nine years at Google DeepMind
GOOGL closed down 5.08% from the prior session on June 22, per press reports
Our close-to-close data shows GOOGL at -4.10% on June 22

GOOGL around the story · hourly24 h reaction ▼ 0.12%

Moves this explains

GOOGL−4.10%Jun 21 · GOOGL fell 4.10% to $346.52 on Monday after AlphaFold co-creator John Jumper's move from Google DeepMind to Anthropic was announced on June 19 and other senior AI departures were reported. Press reports put the intraday drop near 7% and the close near 5%, so the close-to-close figure shown here is smaller. AI-linked large caps also fell (MSFT -2.53%, AMZN -3.40%, ORCL -4.05%, PLTR -5.33%).

Source

Herald Business

Jun 19, 2026

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