Sin City

How to play Sin City

The company must also provide data to the firms making markets on those events.

“If we just sold the data to Kalshi in order to list the markets but no one was coming in and placing liquidity, there’s no point in them listing the markets,” Monk said. “We also need to supply the data to the market makers to inform their models.”

Catalist initially received a list of fewer than 10 potential market makers from Kalshi. It has since completed agreements with close to 20 and is engaging with approximately another 20.

About Sin City

The two related businesses are associated with entrepreneur Nic Brereton and had only recently started operating under their own licences. BresBet was licensed in February 2025, while Bet St George received its licence in December and launched in March this year.

At launch six months ago, Brereton told iGB that Bet St George would use the experience he gained applying advanced data models in the medical sector to improve the customer experience in betting.

“Sometimes what data tells you is uncomfortable because it’s challenging the norm,” he said at the time. “For me [it’s about] where we can make some marginal differences by using player data and challenging the perspectives of what the industry thinks should and does happen.”

What is Sin City?

“Our focus has always been on providing our customers with reliable technology, deep expertise and long-term partnership, said Torrejón and Gábor.  

“Joining OpenBet gives us the opportunity to build on that foundation as part of one of the world’s leading sportsbook businesses. For our customers, it brings the additional scale, capabilities and product portfolio of OpenBet, while maintaining the specialist knowledge and continuity they value today.”

Last year, OpenBet completed its management buyout in a $450 million deal that saw CEO Jordan Levin and other senior executives take control over the platform business from Endeavor.