RBRK ▼ -1.2% - Rubrik, Inc. $RBRK - Rubrik Unveils Rubrik Code Guardian, Harnessing Anthropic’s Claude Mythos 5 to Red-Team Code and Prioritize Cyber Risks Rubrik shares fell 1.2% today following the company's announcement of Rubrik Code Guardian, a new tool that leverages Anthropic's Claude Mythos 5 to identify vulnerabilities in code and help organizations prioritize cybersecurity risks. The product launch underperformed market expectations, suggesting investors may have anticipated more significant competitive differentiation or revenue impact from the AI-powered offering. 15-SEP-2026 10:32 AM ET