Sumo Spins

What is Sumo Spins?

Marantelli says the London-based White Swan is a significant market maker on several secondary exchanges, accounting for as much as 40% of activity on some platforms. Its particular focus is the RFQ, parlay market.

“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.

What is Sumo Spins?

It has been a challenging few years for Entain, having cycled through four CEOs in short succession. In November 2023 Entain agreed to pay a financial penalty totalling £585 million, plus a £20 million charitable donation and £10 million in Crown Prosecution Service (CPS) and HMRC costs. This related to a bribery case initiated by the CPS into the company’s historic operations in Turkey.

Troubles continued as it faced declining growth within its digital business. Reports of failed integrations amid a frenzy of acquisitions further dampened Entain’s reputation and the operator subsequently committed to a major turnaround effort to cut costs and return its digital business to growth.

Efforts to update its legacy tech were also set in motion, and short-lived CEO Gavin Isaacs told iGB at ICE in January 2025 that his biggest challenge in the role was to modernise its core platform.

How to play Sumo Spins

Lane Kiffin will face Ole Miss, his former team, for the first time since he was named LSU head coach last November. For Kiffin’s return to Oxford, the Tigers are 59% favourites at Kalshi.

The announcement came on the same week that Indian Gaming Association leaders met with CFTC Chair Michael Selig. The meetings centred on prediction market-related discussions that IGA Chair David Bean deemed mostly unproductive. On Wednesday, the US Court of Appeals for the Ninth Circuit reversed a lower court’s decision in Blue Lake Rancheria vs Kalshi.

Per the ruling, the Ninth Circuit determined that Kalshi’s sports event contracts amount to unauthorised gaming under the Indian Gaming Regulatory Act (IGRA) when accessed on tribal land.