OpenAI Becomes the Most Valuable Private Company After Massive Stock Sale

OpenAI has reportedly become the world’s most valuable private company, following a $6.6 billion secondary stock sale by employees and insiders. The transaction pushed OpenAI’s valuation to $500 billion.

Unlike a typical funding round, the proceeds went to individual shareholders, not the company itself. Still, it underscores investor confidence in OpenAI’s direction — especially after its last funding round valued it at $300 billion.

OpenAI continues its aggressive expansion, with recent launches like Sora 2 and heavy investment commitments. Its latest revenue reports show $4.3 billion in the first half of 2025, while burning through $2.5 billion in expenses.