Long Jia Xiang Yun

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Marantelli identifies White Swan and Susquehanna as two firms operating at industrial scale in parlays, with Jump Trading, Mojo and DL Trading among the possible leading group. Below them are numerous smaller syndicates, some managing between $5 million and $10 million, alongside sports-specific specialists.

Enda Kendrick, chief executive of service provider Veltium, similarly says the largest UK and European sharp-betting groups have moved rapidly into US prediction markets. He believes there are also more than 100 smaller operations, ranging from individual traders to teams of around 10, interested in entering the regulated US market.

Yet the presence of professional counterparties complicates the customer-facing idea that prediction markets merely allow users to trade opinions with one another. As Kendrick puts it, two ordinary customers are not going to place $10 million or $20 million behind the Philadelphia Eagles. Markets at that scale require institutions.

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The DSWV said the findings should prompt a thorough reassessment of official black market size estimates in Germany.

The DOCV, another trade body representing licensed online casino operators in Germany, also expressed support for the prosecutorial efforts. However, it emphasised that the raid exposed regulatory gaps which had allowed organised crime to flourish.

Kevin O’Neal, a DOCV board member, argued the scale of the investigation calls the GGL’s broader black market estimates into question. He cited the regulator’s 2025 activity report, which put the 2024 share at 23% (€547 million in gross gaming revenue), against Nielsen data suggesting a share of around 56%.

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Kgatleng Central MP Mpho Morolong also said gambling should be understood as entertainment rather than a route to financial security.

“Gambling should be taught as entertainment rather than a way to make money,” Morolong said.

Botswana’s regulated betting market has expanded quickly following the Gambling Authority’s 2023 process to license bookmaker and totalisator operators, including online betting subject to regulatory approval.