Alphabet just had the kind of week that makes investor relations teams earn their salaries. Citizens JMP reaffirmed its Market Outperform rating on GOOGL with a $515 price target, but the note came wrapped in a warning: Google’s AI brain drain is becoming a real problem.

The backdrop is hard to ignore. On June 22, Alphabet’s stock suffered its largest single-day drop in over a year, falling approximately 5% and erasing roughly $269 billion in market capitalization. The culprit wasn’t a revenue miss or a regulatory crackdown. It was people leaving.

The talent exodus that spooked Wall Street

Several senior AI researchers have departed Google DeepMind for direct competitors. Gemini co-lead Noam Shazeer left for OpenAI, while senior scientist John Jumper headed to Anthropic.

The departures echo a pattern that’s been building for two to three years. OpenAI and Anthropic have been aggressively recruiting from Google’s AI divisions, leveraging massive funding rounds and equity packages that even Alphabet’s compensation structure struggles to match.