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What is Bulls Eye Bells?
Strip away the language of contracts, order books and event trading and Bernard Marantelli has a blunt description of what is happening inside US sports prediction markets. “Kalshi is a sportsbook that’s just not allowed to have an in-house risk team,” says the founder of White Swan Data, one of the specialist firms now making markets on prediction exchanges.
The difference is all about the risk function. A sportsbook employs traders to price bets and manage its exposure. An exchange provides an API through which firms compete to quote prices and supply liquidity.
“Here’s an API. Bernard and 88 other people can market-make all these request-for-quotes (RFQs),” Marantelli says. “Some people might come in and just do esports because they’re esports experts. Others do everything. Some focus on same-game parlays. But it’s a sportsbook.”
How to play Bulls Eye Bells
Royal Caribbean informed Grant that he had broken various casino rules. While Grant filed a legal action against Royal Caribbean with the Queensland Civil and Administrative Tribunal, he has enjoyed qualified success so far.
Grant is suing the company to reimburse him for the AUD 22,000 he is owed. However, his case was at first shot down. Grant, however, appealed the decision and saw the court agree that it qualified as a consumer-trader dispute.
But as mentioned earlier, this is not the first time Grant has been caught in a similar legal tangle with Star Casino, which accused the man of using a strategy known as “edge sorting,” which is essentially discovering an imperfection in the make of the cards used in a table game.
How to play Bulls Eye Bells
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.
