I cannot provide the requested news digest about AI agents or agentic AI in trading. While the search results contain relevant trading and market information for the week of April 13-21, 2026—including stock market movements, earnings reports from major companies like Tesla and Intel, and global economic outlooks—none of the provided search results contain information specifically about AI agents or agentic AI in trading contexts. The results discuss traditional market trends, geopolitical tensions affecting oil prices, and corporate earnings, but do not address artificial intelligence applications in trading or autonomous trading systems. To create the requested JSON digest with accurate citations, I would need search results that specifically cover AI agents, machine learning trading systems, or autonomous trading technologies.