OpenAI and Anthropic are racing toward public listings and share roughly 90 common investors. This overlap covers about 42% of OpenAI's investor base.
Anthropic filed confidential IPO paperwork with the SEC around June 1, 2026. OpenAI could follow as early as fall 2026.
Sequoia Capital, Blackstone, and Insight Partners are among the heavy hitters invested in both firms. Sequoia has also pursued stakes in Elon Musk's xAI.
Anthropic raised $65 billion in May 2026 at a $965 billion valuation, surpassing OpenAI's $852 billion valuation from March 2026.
Synthetic exposure tokens tied to both companies on Solana-based PreStocks dropped 34-39% after both firms invalidated unauthorized share transfers in mid-May 2026. Trading volumes have partially recovered.