Nvidia Launches AI Security Tool and Record $150 Billion Buyback

In late September 2026, Nvidia announced two major moves: a new open-source software platform designed to stop AI agents from going rogue, and a record $150 billion increase to its share buyback program. The security tool, which the company says can quarantine misbehaving AI agents in milliseconds, is aimed at preventing autonomous systems from causing harm.

The buyback, the largest in Nvidia's history, comes as the company continues to benefit from the AI boom. Separately, a report said China may allow Alibaba to purchase Nvidia's RTX chips, though no official confirmation has been made.