On October 9, Palo Alto Networks rose 3.01% in regular trading, reaching $410.14 per share with turnover of $358 million. The move was driven by Anthropic's announcement of a critical infrastructure defense program, with founding partners including CrowdStrike, Accenture, Deloitte and Palo Alto Networks, reinforcing expectations for the AI security ecosystem.

As the broader cybersecurity sector rallied on the news, CrowdStrike rose 1.79% in sympathy. The initiative builds on Palo Alto Networks' recent launch of Unit 42 Continuous Frontier AI Defense, which integrates multi-model capabilities from Anthropic and OpenAI, further solidifying the company's competitive position in AI-driven security services.

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