
I built a free site to track what guru investors are buying (inspired by Dataroma, now with MCP access)
Hey everyone,
Sharing my side project, Stockslash. It tracks what guru investors are actually buying and selling. Every quarter, large funds have to file their holdings with the SEC (13F filings). The data is public but a pain to dig through, so the site parses it and shows the trades in a way that's actually readable.
Dataroma was my main inspiration. I loved it and wanted to take the idea a bit further.
Right now it tracks 81 guru investors (Buffett, Burry, LiLu, Ackman, that crowd), and you can see:
- What they bought and sold last quarter
- The most owned stocks across all of them, and how concentrated each portfolio is
- Congress trading (trades members of Congress have to disclose)
- Insider buying, which is interesting when an insider is buying AND a superinvestor already holds it
- Market sentiment stuff like the Buffett indicator and buy/sell ratios
- Curated list of articles from top investors, offering a closer look at their perspectives and strategies
- Some light analysis and investing checklists to help you actually think through a name
The part I care about most is making the data easy to get at. There's an MCP server, so you can point Claude at it and ask questions about the data in plain english. A public API is coming too. The goal is to make this stuff friendly for both regular people and AI tools instead of locking it behind some clunky enterprise thing.
It's free, no ads, no subscription.
Would love feedback, especially on the MCP side and anything that feels rough or could be better. Happy to answer anything.
Link: stockslash.com