Alphabet stock fell 7% after key AI executives left Google DeepMind for OpenAI and Anthropic, erasing roughly $270 billion in market cap in one

Top AI researchers leave Google DeepMind for OpenAI and Anthropic. Anthropic has 93.5% YES for best AI model by August 2026.

Google's chief scientist is leaving after 27 years to launch an AI startup, adding to a growing wave of Big Tech departures reshaping AI and

Move comes as Google faces mounting pressure from key rivals

The news sent Alphabet stock tumbling