Stockslash vs Dataroma
Dataroma is a long running site that tracks the 13F holdings of top value investors. Stockslash does that too, and adds congress trades, insider buying, and a cleaner interface. Here is how they compare.
What is Dataroma?
Dataroma is a free website that has tracked the 13F holdings of around 80 well-known value investors since the 2000s. It is popular for its simple, no-frills holdings tables. It covers institutional 13F holdings only: it does not track congressional stock trades or insider (Form 4) buying, and it does not offer an API. Stockslash covers the same 13F holdings, then adds those two extra smart-money signals and a free API for AI tools.
| Feature | Stockslash | Dataroma |
|---|---|---|
| Super investor 13F holdings | Yes | Yes |
| Quarterly buys and sells | Yes | Yes |
| Most owned and consensus stocks | Yes | Yes |
| Congress stock trading tracker | Yes | No |
| Insider buying tracker | Yes | No |
| Free API for AI tools (MCP) | Yes | No |
| Modern, mobile friendly interface | Yes | Basic |
| Price | Free | Free |
Pick Stockslash if you want congress trades and insider buying alongside 13F data, a modern mobile-friendly interface, and a free API for AI tools and agents.
Pick Dataroma if you only need a simple, familiar list of super investor holdings and prefer its long-established layout.
The bottom line
If you only want a simple list of super investor holdings, Dataroma works well and is free. If you also want congress trades, insider buying, and a faster, cleaner interface in one place, Stockslash covers more.
Frequently asked questions
Is Dataroma free?
Yes, Dataroma is free to use. Stockslash is also free.
What does Dataroma not track?
Dataroma focuses on institutional 13F holdings only. It does not track congressional stock trades or insider (Form 4) buying, both of which Stockslash includes.
Does Dataroma have an API?
No. Stockslash offers a free public MCP API with 23 tools, so AI agents can query the same 13F, congress, and insider data directly.