I measure things and publish how.

Prediction markets at Vultax Research. Estonian company records at OmniOS. 129 Wikipedia articles, each sentence with its source. Every figure I put out carries its method, its date and the record behind it, and I hold no position on any market I measure.

  • Vultax Research31studies on Polymarket, Kalshi and the markets around them. Free, each with its data and method.The research
  • OmniOS3Estonian public registers behind every answer: companies, taxes paid, public contracts. Free beta since September 2026.Ask Vi
  • Wikipedia129articles on English Wikipedia, mostly Estonian scholars and artists, with 1,813 citations.What they taught me

Now · October 2026

  • 17 OctoberVultax took down its paywall and published a charter. Everything it measures is free to read and to download.
  • MonthlyThe Polymarket efficiency tests rerun: the bid sum across every outcome, and whether long shots win more often than their price says.
  • OngoingEurope's gambling regulators answer our questions in writing and we publish the answers. Germany, Spain, Czechia and Lithuania so far.

Writing