Hidden Systems

Hidden Systems builds AI-powered intelligence products for financial markets and complex systems. Its flagship platform, Nebula, converts public market conversation into structured financial social intelligence. It helps investors, analysts, researchers, developers, and AI agents understand what markets are discussing, how sentiment is changing, which stocks and themes are gaining mindshare, what narratives are forming, and which actors are influencing the conversation.
Nebula is stocks-first and supports research across public and private equities, AI businesses, major market indices, commodities, and other global-market subjects. Users can explore sentiment, mindshare, emotions, narratives, source cohorts, influential accounts, market events, and historical changes through the web application. Free public tools provide accessible stock and market-sentiment research, while paid plans provide deeper analysis and workflow capabilities.
Developers can integrate Nebula through its API, MCP server, and CLI, making it suitable for dashboards, alerts, research systems, and AI-agent workflows. The platform is an intelligence and research layer rather than a brokerage or automated trading service. Its signals help users discover changes in attention, investigate market narratives, and prioritise further research alongside filings, market data, fundamentals, and primary evidence.
Hidden Systems also publishes practical guides and research on stock sentiment, market intelligence, forecasting, social systems, and simulation.