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About Blazing Bull
“Just better margins,” he says of that decision. “I think it’s more defendable. It’s the area that fewer people can do well. So I think it’s more defendable margin, more ability to get long-term contracts and beneficial positions.”
Singles can be profitable, but parlay pricing requires the market maker to calculate the correlations between multiple outcomes and respond dynamically to individual requests. It is a skill set built over years in the sharper regions of the existing sports betting ecosystem.
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.
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At the same time, prediction market operators are facing regulatory tussles in the US. State regulators are moving to shut down the firms under gambling laws. The companies say their contracts should be regulated at the federal level as derivatives.
However, the sector has grown substantially despite such disputes. Bernstein predicted in April that annual prediction market volume could reach $1 trillion by 2030. The research estimated volume was around $51 billion in 2025 and could grow to around $240 billion in 2026.
The partnership with Yahoo Finance wraps up as prediction markets push for broader distribution across financial media, sports, and entertainment platforms. For Polymarket, the loss of the Yahoo Finance hub is one distribution channel, but other partnerships remain intact.
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On Thursday, the UK Gambling Commission reported that two senior figures formerly associated with the Conservative Party had pleaded guilty to offences linked to betting on the 2024 General Election date.
Anthony Lee, who served as the Conservative Party’s director of campaigning, pleaded guilty to two counts of cheating under sections 42(1)(a) and 42(1)(b) of the Gambling Act 2005.
Meanwhile, Laura Lee (formerly Saunders), his wife and former head of international for the party, who also stood as the Conservative candidate in Bristol North-West at the 2024 election, pleaded guilty to one offence under section 42(1)(a).
