13F.chat — 13F Holdings Chat and AI Portfolio Research

# 13F.chat > AI research terminal for SEC 13F filings, hedge fund portfolio tracking, holdings discovery, and portfolio optimization. 13F.chat helps investors analyze public SEC 13F filings with AI-assisted research, fund comparison, holdings change detection, portfolio insights, and optimization workflows. ## Primary Use Cases - Track hedge fund and institutional 13F holdings. - Compare managers, funds, sectors, stocks, and quarterly filing changes. - Ask an AI assistant questions about public 13F data and portfolio ideas. - Run portfolio optimization and research workflows. ## Key Pages - [Home](https://13f.chat/) - [13F Discovery Radar](https://13f.chat/13f-discovery-radar) - [13F Holdings](https://13f.chat/13f-holdings) - [13F forms: types, coverage and reading guide](https://13f.chat/13f-forms): Original SEC-sourced explanation, available in English, Simplified Chinese, Traditional Chinese, Japanese and Spanish. - [13F Filing Deadline: quarterly 13F filing dates, countdown and who has filed](https://13f.chat/13f-filing-deadline) - [Michael Burry Portfolio: Scion Asset Management's last 13F holdings with options](https://13f.chat/michael-burry-scion-asset-management) - [Michael Burry Short Position: every put option in Scion Asset Management's 13F filings](https://13f.chat/michael-burry-short-position) - [Insights](https://13f.chat/insights) - [Optimization](https://13f.chat/optimization) - [Compare Funds](https://13f.chat/compare) - [Articles](https://13f.chat/articles) - [Warren Buffett Portfolio](https://13f.chat/warren-buffett-portfolio) - [Fundsmith holdings and Terry Smith portfolio research](https://13f.chat/terry-smith-fundsmith) - [Oakmark Fund holdings and Bill Nygren portfolio research](https://13f.chat/bill-nygren-oakmark-fund) - [Dodge and Cox Stock Fund holdings and portfolio changes](https://13f.chat/dodge-and-cox-stock-fund) - [Berkshire 13F holdings and quarterly portfolio changes](https://13f.chat/berkshire-hathaway) - [First Eagle Invest

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