Blackstone Increases Stake in Anthropic (ANTH) to $1B at $350B Valuation

Blackstone is boosting its stake in Anthropic (ANTH), raising its investment to about $1 billion at a company valuation of roughly $350 billion, a source familiar with the matter told Reuters on February 10, 2026. Additional $200 million was invested as part of Anthropic's ongoing funding round, reflecting continued investor demand for leading generative AI companies. The company, which develops the Claude AI models, released Opus 4.6, its new flagship system, last week, touting improvements in reasoning, coding, and complex text-generation, with enhanced reliability and gains in software development and financial analysis. The release follows broader software stock weakness in the U.S. and Europe, where investors are concerned about AI-driven disruption to traditional software business models.