Why Is Cerebras Systems (CBRS) Stock Down 10.69% Today, Oct 12? Looming Share Unlock and AI Funding Concerns Weigh on Shares

Cerebras Systems (CBRS) fell 10.69% to $146.62 on October 12, 2026, as Microsoft detailed a larger Azure Maia inference rollout that sharpened competition concerns across AI infrastructure. This report examines the session, the limited sector-level explanation, and the technical levels that frame the next move.