Dolphin Reef

What is Dolphin Reef?

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.

About Dolphin Reef

Other retail sectors performed better. Bingo GGY increased 8.2% to £703.8 million ($941.8 million), while arcade GGY rose 10.7% to £800.1 million ($1.07 billion).

While the new figures underline the sheer scale of Britain’s regulated market, leading operator Entain is pressing the government for tougher action against black-market platforms.

Entain highlighted that 11 of 20 Premier League clubs currently hold sponsorship or advertising arrangements with gambling operators lacking a Gambling Commission license—up from government estimates of eight clubs during the 2025/26 season.

How to play Dolphin Reef

The operator declined to comment on losing its spot in the FTSE 100, but recent sentiment from the senior management team has been positive in recent quarters as its turnaround efforts have shown green shoots amid growth returning to its core markets. This is despite various regulatory and tax headwinds across Europe.

In Q1 2025, the group reported double-digit digital growth, thanks to strong UK, Brazil and US online performances. The period marked Stella David’s first quarter in the full-time group CEO role.

David, at the time, said she was “optimistic but prudent” about Entain’s Q1 performance.