Alphabet has shed roughly $269 billion in market value over the past week as four senior Google DeepMind researchers exited for OpenAI and Anthropic, exposing the most acute talent crisis Google’s AI division has faced since its 2023 consolidation. Shares fell nearly 6% on Monday, June 22, the worst single-session decline in more than a year, after Noam Shazeer’s June 18 move to OpenAI and Nobel laureate John Jumper’s June 19 departure to Anthropic.

Shazeer, vice president of engineering and Gemini co-lead, co-authored the foundational transformer research that underwrites virtually every modern large language model. Google paid roughly $2.7 billion in August 2024 to license Character.AI and bring him back alongside Daniel De Freitas. Twenty-two months later, he’s gone again.

Jumper shared the 2024 Nobel Prize in chemistry with DeepMind chief executive Demis Hassabis for AlphaFold. Bloomberg reported Wednesday that two more DeepMind researchers, Jonas Adler and Alexander Pritzel, are expected to join Anthropic from the London-based pre-training team. Alphabet slipped a further 1.2% intraday before paring losses.

The timing is what stings. Alphabet priced an $84.75 billion equity raise on June 2, including a $10 billion private placement from Berkshire Hathaway, to fund a 2026 capex programme of $180 billion to $190 billion. First-quarter free cash flow had already fallen 47% year-over-year to $10.12 billion. The company is spending at wartime scale precisely as the human capital that justifies the spend walks out.

Hassabis, speaking at an event in Cannes, was unbothered: “There’s a lot of talent movement between all the leading labs and we win our fair share of the top talent.” It’s the kind of line executives deliver when the cap table can absorb the losses but the org chart can’t yet say so.

Sources