RBRK ▼ -1.2% - Rubrik, Inc. $RBRK - Rubrik Adds New MCP Support to Expand Access to Agentic Cyber Resilience Rubrik announced expanded support for its Managed Cyber Resilience Platform (MCP) to increase accessibility of its agentic cyber resilience offerings, though the stock declined 1.2% today despite the product expansion news. 15-SEP-2026 10:37 AM ET