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Costes was involved with GREF at a time when numerous European regulators, including the ANJ, focused on tightening advertising regulations and boosting player protection frameworks. The forum thanked Costes for his dedicated service.
Replacing Miller as treasurer is Ian Angus, director of policy at the UK Gambling Commission where, since 2020, he has been closely engaged in policy development. This includes the Gambling Act white paper and its recommendations on financial risk assessments.
His appointment signals a continuation of UK influence within GREF, even as the Gambling Commission undergoes personnel changes. Ruth Evans was named the new Gambling Commission chair, taking over from Charles Counsell after over a year in the position.
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There are no SCOTUS-prediction market contracts currently on Kalshi but Polymarket lists a 41% probability that the court will accept an event contract case by 31 December.
A hearing before the Supreme Court would be the culmination of what has been the biggest sports betting-related development since PASPA. Perhaps no other issue has united gaming stakeholders from various companies, tribes, states and regulators.
Beginning with the US presidential elections in November 2024, when prediction markets catapulted into mainstream culture, their rise has been undeniable. Kalshi and Polymarket have seen their valuations balloon to $40 billion and $21 billion, respectively, and the majority of the top US bookmakers have scrambled to expand into the prediction space in various forms, either by building their own exchanges, acquiring existing ones or engaging in market-making.
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This followed a period of restrategising for the operator, after rebranding from GVC Holdings and committing to having 100% of its revenues come from regulated markets.
But its share price has taken a tumble over the last year, dropping up to 37% since September 2025. Its market cap currently sits at £3.39 billion.
The operator first started trading on LSEG’s main market in February 2016 under its previous company name GVC Holdings. This followed its delisting from the Alternative Investment Market (AIM exchange).