13F.chat

13F.chat is a research tool that tracks the quarterly 13F filings of legendary investment managers like Warren Buffett, Michael Burry, and others. It shows you exactly what they bought, added, or sold, in dollar terms. But it doesn't stop at raw data — it uses AI to help you judge whether each move still matters today. You can ask questions like "Which holdings dominate the risk profile?" or "What was the best recent period for this strategy?" and get detailed answers with numbers and context.

The tool combines a chat interface with visual dashboards. The 13F Discovery Radar shows changes in portfolio weight and share-count conviction across 117 managers and 500 stocks. There's a Capital Rotation Timeline that tracks sector-level active flows, a Macro Rotation Heatmap, and a Conviction vs Consensus matrix that plots stocks by how many managers are buying vs how strongly they're buying. The AI can extract key figures from its answers and display them in tables.

This is most useful for investors who want to follow smart money without manually parsing SEC filings. If you're a retail investor, a financial analyst, or a portfolio manager, you can quickly see what the top minds are doing and get AI-powered explanations. It's also handy for comparing strategies — for example, asking how Berkshire Hathaway's concentration compares to the S&P 500.