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About Hooked
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.
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Rovito was among 22 people indicted in April in a federal case involving an alleged illegal gambling operation in northwest Indiana.
Prosecutors charged him with operating an illegal gambling business and conspiracy to collect extensions of credit by extortionate means. The indictment alleges that the operation involved sports betting and the collection of gambling debts.
Rovito has pleaded not guilty and is presumed innocent unless proven guilty in court. His attorney has disputed the government’s allegations, claiming that the indictment does not allege his client collected money, made any threats, or directed other defendants to do so.
About Hooked
Another bettor noted that gambling debts fractured personal relationships: “Sports betting ruined my six years of friendship because I couldn’t pay back the borrowed loan from my friend. He stopped talking to me.”
Americans wagered nearly $167 billion on sports in 2025 through regulated sportsbooks, an 11% increase year-over-year, according to data from the American Gaming Association (AGA).
The blurring line between financial investing and gambling has been accelerated by the rise of prediction markets—exchanges offering event contracts that are federally regulated as financial derivatives. U.S. News found that over 40% of active sports bettors now also participate in sports prediction markets.