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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 Spaceflight Simulator
The legal wrangling extends to Michigan, where Attorney General Dana Nessel has rejected Polymarket and the CFTC’s arguments that the Michigan Gaming Control Board has no regulatory authority over prediction markets, even the ones allowing traders to buy and sell shares of sports outcomes.
Since returning its prediction market to the US, Polymarket has regularly engaged in nonconforming advertising. Painting a water tower in the company’s blue and branding the structure with its logo is the firm’s latest marketing ploy.
In March, Polymarket opened The Situation Room, a pop-up “newsbar” in Washington, DC. The bar and lounge’s televisions played various content related to prediction markets, like Bloomberg Terminals, cable news, and live social media feeds that were “dedicated to monitoring the situation.”
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One such event occurred in April 2026 when a particularly lucky guest claimed the Grand Jackpot prize of $1,159,768.43 after placing an initial wager of $25 at the off-Strip casino resort.
The casino has continued to introduce several worthwhile expansions aimed at its gaming facilities, including the Fortune Coin Bonus Room featuring three available must-hit jackpots (Mini, Major, and Grand).
The jackpots have been designed to drop before accumulating $500, $5,000, and $10,000, respectively.