Alphabet just announced the biggest equity raise ever linked to AI infrastructure. The Google parent company plans to pull in $80 billion in total equity capital, with a $10 billion private placement from Berkshire Hathaway serving as the deal’s anchor.

Inside the deal structure

The fundraising breaks down into three distinct tranches. There’s $30 billion earmarked for underwritten offerings, the $10 billion Berkshire private placement, and up to $40 billion in at-the-market offerings expected to begin rolling out in Q3 2026.

Berkshire’s $10 billion commitment is split evenly across two share classes. The Omaha-based conglomerate is purchasing $5 billion in Class A common stock at $351.81 per share, alongside $5 billion in Class C capital stock priced at $348.20 per share.

This investment brings Berkshire’s total Alphabet holdings to approximately $32 billion. The conglomerate has been steadily building its stake since Q3 2025, and this private placement represents one of its biggest single equity bets in recent memory. Berkshire is operating under new leadership following Buffett’s retirement, which makes the decision a deliberate endorsement of Alphabet’s AI strategy rather than a legacy holdover position.