See exactly what the world's greatest investors are buying and selling. ChartingLens parses SEC 13F filings directly and converts raw CUSIP data into readable ticker symbols, so you can follow the portfolios of Buffett, Burry, Ackman, Dalio, and more — with portfolio overlap detection to find the stocks that multiple legends agree on.
SEC Form 13F is a quarterly report that institutional investment managers with at least $100 million in assets under management are required to file with the Securities and Exchange Commission. The filing discloses all equity holdings — every stock the fund owns, the number of shares, and the market value of each position.
These filings are publicly available, but reading them in their raw form is nearly impossible for most people. The data is reported using CUSIP numbers (a nine-character alphanumeric code assigned to each security) rather than ticker symbols, and the filings are published as structured XML or plain text documents buried in the SEC's EDGAR database.
ChartingLens solves this by automatically parsing each 13F filing, converting every CUSIP to its corresponding ticker symbol, and presenting the data in a clean, searchable format. You get the full portfolio of each legendary investor updated quarterly, without having to dig through SEC filings yourself.
The world's best investors have spent decades refining their research processes and have access to resources most retail traders do not. While their 13F filings are delayed by up to 45 days after quarter-end, the positions they reveal tend to be long-term holdings — meaning the thesis behind the trade is usually still intact when you see the filing. Following their positions is not about copying trades blindly; it is about using their research as a starting point for your own analysis.
ChartingLens tracks 10+ legendary investors and institutional managers. Each investor's full portfolio is parsed from their latest 13F filing and updated automatically when new filings are published.
Additional investors are added periodically based on user requests and filing availability.
Each investor's portfolio can be viewed in multiple ways to help you quickly understand their positioning and identify actionable ideas.
See every stock in the investor's portfolio with share count, market value, and percentage weight. Sorted by position size so you can focus on their highest-conviction bets.
Filter to show only positions that are new since the previous 13F filing. These are fresh buys — stocks the investor initiated a position in during the most recent quarter.
See which positions were increased, decreased, or completely sold compared to the prior quarter. Increases in existing positions signal growing conviction.
Compare two or more investors to find stocks they both hold. When Buffett and Ackman own the same stock, it is worth a closer look.
One of the most powerful features of the Legendary Investor Tracking tool is portfolio overlap detection. This feature compares the holdings of multiple investors and highlights stocks that appear in two or more portfolios simultaneously.
When several of the world's best investors independently decide to own the same stock, it represents a rare convergence of research and conviction. These overlapping positions are not coordinated — each investor arrived at their thesis independently, making the agreement all the more significant.
Use the "Overlaps Only" filter to instantly narrow the view to stocks held by multiple legends. This is a fast way to generate a high-quality watchlist of stocks that have been vetted by some of the greatest investment minds in history.
Raw 13F filings report holdings using CUSIP numbers — a nine-character identifier that most retail traders have never seen and cannot look up easily. ChartingLens automatically converts every CUSIP in a filing to its corresponding stock ticker symbol, company name, and current market data.
This conversion runs server-side when each new filing is processed, and the results are cached so you see clean, readable data instantly. No manual lookup required, no confusing alphanumeric codes — just ticker symbols you can immediately chart and research.
13F filings are due within 45 days of each calendar quarter-end (March 31, June 30, September 30, December 31). Most legendary investors file close to the deadline, but the exact date varies. ChartingLens monitors EDGAR for new filings from every tracked investor and notifies Premium users when a new filing is published.
This means you do not have to check EDGAR yourself or set calendar reminders for each investor's filing window. The moment a new 13F is available, ChartingLens parses it, converts the CUSIPs, and makes the updated portfolio available in the app — and you get notified so you can review the changes right away.
Use the "Recent Additions" filter to see what each legend has been buying recently. These are fresh ideas from investors who have done extensive due diligence. Research the stock on your own, check the chart, and if it aligns with your own analysis, add it to your watchlist.
If you already have a thesis on a stock and then discover that Buffett or Burry holds the same position, it provides independent validation of your idea. It does not guarantee the trade will work, but it gives you additional confidence that your research is on the right track.
When a legendary investor sells out of a position entirely, it is worth investigating why. Check the chart and recent news. If the market has not yet reacted, the exit may be a leading indicator of trouble ahead. Michael Burry's positions, in particular, often signal contrarian views that the market has not yet priced in.
Build a watchlist from stocks held by 3 or more tracked investors. This "consensus portfolio" represents the highest-conviction ideas across the superinvestor universe and can serve as a starting point for your own long-term portfolio construction.
13F filings reflect positions as of the quarter-end date, and can be filed up to 45 days later. By the time you see a filing, the investor may have already adjusted their position. Use 13F data as a research input, not a real-time trading signal. Combine it with technical analysis and current market conditions before making any trading decisions.
| Feature | Free | Premium |
|---|---|---|
| Number of tracked investors | 2 investors | All 10+ investors |
| Full portfolio holdings | Free | Free |
| Recent additions filter | Free | Free |
| Portfolio overlap detection | - | Premium |
| Position change tracking | - | Premium |
| New filing notifications | - | Premium |
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