[AI Application Concept Stocks Surge Midday, Zhidou Shares Hit Limit Up] According to DeepTech TechFlow, on July 27, AI application concept stocks experienced a midday surge, with Zhidou Shares hitting the daily limit up. Previously, Suzhou Keda also hit the limit up, while Miao Exhibition rose over 15%, followed by gains in Xuanya International, Youzu Network, Fushi Holdings, and Chinese Online. On the news front, OpenAI recently officially launched the AI agent operations platform Presence. The platform integrates AI agents with internal enterprise data and business systems, enabling automation of tasks such as customer service and sales, along with supporting tools for security management and intelligent optimization.