About this app
What is Grandx?
Also, Stephen Cloobeck, a billionaire and 2026 California gubernatorial candidate, purchased approximately $10,000 in contracts tied to his campaign. He was fined $31,770 and suspended for three years.
Each settlement involved cooperation with Kalshi’s investigation.
What distinguishes Santos’ penalty is the exchange’s allegation that he actively issued false or misleading statements to alter prices and profited materially, violating additional rules such as failure to cooperate and manipulative conduct.
What is Grandx?
The two companies began collaborating in November 2025. As part of the deal, Polymarket provided data for a dedicated prediction market section on Yahoo Finance. The feature provided market-based probabilities of economic, political, and financial developments alongside Yahoo Finance content.
The Yahoo Finance prediction market section was taken out in April. The companies have now confirmed that the larger deal is also off, as reported by Bloomberg.
Yahoo said Polymarket is still an advertising partner and suggested the two could collaborate on other projects in the future. Polymarket has not provided any public explanation for the end of the data partnership.
How to play Grandx
After play, some looked to banks or regulatory bodies for oversight on total spend across platforms.
Within this shared model, there was a clear preference for personalised interventions over generic ones.
Tailored, behaviour-triggered messages were seen as more effective than generic warnings, but many participants simultaneously expressed mistrust towards operators collecting behavioural data.
