About InsiderRadar
Insider Alpha EU
InsiderRadar makes the public insider-transaction register of the Dutch regulator AFM searchable and readable. Directors and supervisory board members of listed companies must report their own trades (MAR art. 19). Those filings are public, but they sit apart from one another and are awkward to search. We collect them automatically, classify them, and keep a public record of what we make of them — before we know how it turns out.
What we do
- Bring together facts from a public register and make them searchable.
- Show fixed, recheckable calculations: the same input always gives the same figure.
- Keep a public track record that nothing disappears from — so the misses are in there too.
What we don’t do
- No personal advice and no recommendations.
- No promises about returns, and no “buy this” language.
- No supplementing filers’ names with data from elsewhere. What a filing says, it says.
Where the data comes from
Every transaction comes from the AFM register — transactions by managers (MAR art. 19), which the AFM publishes under its own Dutch name, “Transacties leidinggevenden, MAR art. 19”. We fetch prices from market-data providers and store them ourselves. How much could be measured and where the limits are is set out in the methodology.
A member of the U.S. Congress has a page with facts a filing does not carry: their party, their term, their official website, and the committees they sit on. Those come from one free public dataset — unitedstates/congress-legislators (CC0 1.0) — stored here as dated files, never fetched while a page loads. That dataset publishes today’s state and no history, so it can say which committee a member sits on now, never which one they sat on when a trade was made.
Image credits
A handful of fund managers have a portrait next to their name. We use only photographs with a demonstrably free license — public domain, CC0 or CC BY — and every one of them is credited here, which is what those licenses ask for. Everyone else keeps an initials tile: that is the design, not a missing photo.
- Bill Ackman — Senate Democrats, CC BY 2.0, via Wikimedia Commons (2026-08-19).
- Bill Gates — Bogdan Hoyaux / European Union, CC BY 4.0, via Wikimedia Commons (2026-08-19).
- George Soros — Aris Oikonomou / European Commission, CC BY 4.0, via Wikimedia Commons (2026-08-19).
- Warren Buffett — USA International Trade Administration, Public domain, via Wikimedia Commons (2026-08-19).
- Members of the U.S. Congress — official portraits from the U.S. Government Printing Office, public domain, republished by the unitedstates/images project, which states that the GPO has confirmed all of them are in the public domain (2026-08-21). Each image links to the exact file it came from on the page of the member it shows.
Contact
Published by: InsiderRadar.
Email: teunf98@gmail.com.